CVE-2025-38052

In the Linux kernel, the following vulnerability has been resolved: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done Syzbot reported a slab-use-after-free with the following call trace: ================================================================== BUG: KASAN: slab-use-after-free in tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 Read of size 8 at addr ffff88807a733000 by task kworker/1:0/25 Call Trace: kasan_report+0xd9/0x110 mm/kasan/report.c:601 tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 crypto_request_complete include/crypto/algapi.h:266 aead_request_complete include/crypto/internal/aead.h:85 cryptd_aead_crypt+0x3b8/0x750 crypto/cryptd.c:772 crypto_request_complete include/crypto/algapi.h:266 cryptd_queue_worker+0x131/0x200 crypto/cryptd.c:181 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 Allocated by task 8355: kzalloc_noprof include/linux/slab.h:778 tipc_crypto_start+0xcc/0x9e0 net/tipc/crypto.c:1466 tipc_init_net+0x2dd/0x430 net/tipc/core.c:72 ops_init+0xb9/0x650 net/core/net_namespace.c:139 setup_net+0x435/0xb40 net/core/net_namespace.c:343 copy_net_ns+0x2f0/0x670 net/core/net_namespace.c:508 create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x419/0x970 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 Freed by task 63: kfree+0x12a/0x3b0 mm/slub.c:4557 tipc_crypto_stop+0x23c/0x500 net/tipc/crypto.c:1539 tipc_exit_net+0x8c/0x110 net/tipc/core.c:119 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:173 cleanup_net+0x5b7/0xbf0 net/core/net_namespace.c:640 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 After freed the tipc_crypto tx by delete namespace, tipc_aead_encrypt_done may still visit it in cryptd_queue_worker workqueue. I reproduce this issue by: ip netns add ns1 ip link add veth1 type veth peer name veth2 ip link set veth1 netns ns1 ip netns exec ns1 tipc bearer enable media eth dev veth1 ip netns exec ns1 tipc node set key this_is_a_master_key master ip netns exec ns1 tipc bearer disable media eth dev veth1 ip netns del ns1 The key of reproduction is that, simd_aead_encrypt is interrupted, leading to crypto_simd_usable() return false. Thus, the cryptd_queue_worker is triggered, and the tipc_crypto tx will be visited. tipc_disc_timeout tipc_bearer_xmit_skb tipc_crypto_xmit tipc_aead_encrypt crypto_aead_encrypt // encrypt() simd_aead_encrypt // crypto_simd_usable() is false child = &ctx->cryptd_tfm->base; simd_aead_encrypt crypto_aead_encrypt // encrypt() cryptd_aead_encrypt_enqueue cryptd_aead_enqueue cryptd_enqueue_request // trigger cryptd_queue_worker queue_work_on(smp_processor_id(), cryptd_wq, &cpu_queue->work) Fix this by holding net reference count before encrypt.

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

mac802154: check local interfaces before deleting sdata list

syzkaller reported a corrupted list in ieee802154_if_remove. [1]

Remove an IEEE 802.15.4 network interface after unregister an IEEE 802.15.4 hardware device from the system.

CPU0 CPU1 ==== ==== genl_family_rcv_msg_doit ieee802154_unregister_hw ieee802154_del_iface ieee802154_remove_interfaces rdev_del_virtual_intf_deprecated list_del(&sdata->list) ieee802154_if_remove list_del_rcu

The net device has been unregistered, since the rcu grace period, unregistration must be run before ieee802154_if_remove.

To avoid this issue, add a check for local->interfaces before deleting sdata list.

[1] kernel BUG at lib/list_debug.c:58! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6277 Comm: syz-executor157 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56 Code: e8 a1 7e 00 07 90 0f 0b 48 c7 c7 e0 37 60 8c 4c 89 fe e8 8f 7e 00 07 90 0f 0b 48 c7 c7 40 38 60 8c 4c 89 fe e8 7d 7e 00 07 90 <0f> 0b 48 c7 c7 a0 38 60 8c 4c 89 fe e8 6b 7e 00 07 90 0f 0b 48 c7 RSP: 0018:ffffc9000490f3d0 EFLAGS: 00010246 RAX: 000000000000004e RBX: dead000000000122 RCX: d211eee56bb28d00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88805b278dd8 R08: ffffffff8174a12c R09: 1ffffffff2852f0d R10: dffffc0000000000 R11: fffffbfff2852f0e R12: dffffc0000000000 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88805b278cc0 FS: 0000555572f94380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056262e4a3000 CR3: 0000000078496000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del_rcu include/linux/rculist.h:157 [inline] ieee802154_if_remove+0x86/0x1e0 net/mac802154/iface.c:687 rdev_del_virtual_intf_deprecated net/ieee802154/rdev-ops.h:24 [inline] ieee802154_del_iface+0x2c0/0x5c0 net/ieee802154/nl-phy.c:323 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f(CVE-2024-57948)

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop

Move the conditional loading of hardware DR6 with the guest's DR6 value out of the core .vcpu_run() loop to fix a bug where KVM can load hardware with a stale vcpu->arch.dr6.

When the guest accesses a DR and host userspace isn't debugging the guest, KVM disables DR interception and loads the guest's values into hardware on VM-Enter and saves them on VM-Exit. This allows the guest to access DRs at will, e.g. so that a sequence of DR accesses to configure a breakpoint only generates one VM-Exit.

For DR0-DR3,…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

mac802154: check local interfaces before deleting sdata list

syzkaller reported a corrupted list in ieee802154_if_remove. [1]

Remove an IEEE 802.15.4 network interface after unregister an IEEE 802.15.4 hardware device from the system.

CPU0 CPU1 ==== ==== genl_family_rcv_msg_doit ieee802154_unregister_hw ieee802154_del_iface ieee802154_remove_interfaces rdev_del_virtual_intf_deprecated list_del(&sdata->list) ieee802154_if_remove list_del_rcu

The net device has been unregistered, since the rcu grace period, unregistration must be run before ieee802154_if_remove.

To avoid this issue, add a check for local->interfaces before deleting sdata list.

[1] kernel BUG at lib/list_debug.c:58! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6277 Comm: syz-executor157 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56 Code: e8 a1 7e 00 07 90 0f 0b 48 c7 c7 e0 37 60 8c 4c 89 fe e8 8f 7e 00 07 90 0f 0b 48 c7 c7 40 38 60 8c 4c 89 fe e8 7d 7e 00 07 90 <0f> 0b 48 c7 c7 a0 38 60 8c 4c 89 fe e8 6b 7e 00 07 90 0f 0b 48 c7 RSP: 0018:ffffc9000490f3d0 EFLAGS: 00010246 RAX: 000000000000004e RBX: dead000000000122 RCX: d211eee56bb28d00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88805b278dd8 R08: ffffffff8174a12c R09: 1ffffffff2852f0d R10: dffffc0000000000 R11: fffffbfff2852f0e R12: dffffc0000000000 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88805b278cc0 FS: 0000555572f94380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056262e4a3000 CR3: 0000000078496000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del_rcu include/linux/rculist.h:157 [inline] ieee802154_if_remove+0x86/0x1e0 net/mac802154/iface.c:687 rdev_del_virtual_intf_deprecated net/ieee802154/rdev-ops.h:24 [inline] ieee802154_del_iface+0x2c0/0x5c0 net/ieee802154/nl-phy.c:323 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f(CVE-2024-57948)

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop

Move the conditional loading of hardware DR6 with the guest's DR6 value out of the core .vcpu_run() loop to fix a bug where KVM can load hardware with a stale vcpu->arch.dr6.

When the guest accesses a DR and host userspace isn't debugging the guest, KVM disables DR interception and loads the guest's values into hardware on VM-Enter and saves them on VM-Exit. This allows the guest to access DRs at will, e.g. so that a sequence of DR accesses to configure a breakpoint only generates one VM-Exit.

For DR0-DR3,…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

mac802154: check local interfaces before deleting sdata list

syzkaller reported a corrupted list in ieee802154_if_remove. [1]

Remove an IEEE 802.15.4 network interface after unregister an IEEE 802.15.4 hardware device from the system.

CPU0 CPU1 ==== ==== genl_family_rcv_msg_doit ieee802154_unregister_hw ieee802154_del_iface ieee802154_remove_interfaces rdev_del_virtual_intf_deprecated list_del(&sdata->list) ieee802154_if_remove list_del_rcu

The net device has been unregistered, since the rcu grace period, unregistration must be run before ieee802154_if_remove.

To avoid this issue, add a check for local->interfaces before deleting sdata list.

[1] kernel BUG at lib/list_debug.c:58! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6277 Comm: syz-executor157 Not tainted 6.12.0-rc6-syzkaller-00005-g557329bcecc2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56 Code: e8 a1 7e 00 07 90 0f 0b 48 c7 c7 e0 37 60 8c 4c 89 fe e8 8f 7e 00 07 90 0f 0b 48 c7 c7 40 38 60 8c 4c 89 fe e8 7d 7e 00 07 90 <0f> 0b 48 c7 c7 a0 38 60 8c 4c 89 fe e8 6b 7e 00 07 90 0f 0b 48 c7 RSP: 0018:ffffc9000490f3d0 EFLAGS: 00010246 RAX: 000000000000004e RBX: dead000000000122 RCX: d211eee56bb28d00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffff88805b278dd8 R08: ffffffff8174a12c R09: 1ffffffff2852f0d R10: dffffc0000000000 R11: fffffbfff2852f0e R12: dffffc0000000000 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88805b278cc0 FS: 0000555572f94380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056262e4a3000 CR3: 0000000078496000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del_rcu include/linux/rculist.h:157 [inline] ieee802154_if_remove+0x86/0x1e0 net/mac802154/iface.c:687 rdev_del_virtual_intf_deprecated net/ieee802154/rdev-ops.h:24 [inline] ieee802154_del_iface+0x2c0/0x5c0 net/ieee802154/nl-phy.c:323 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f(CVE-2024-57948)

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop

Move the conditional loading of hardware DR6 with the guest's DR6 value out of the core .vcpu_run() loop to fix a bug where KVM can load hardware with a stale vcpu->arch.dr6.

When the guest accesses a DR and host userspace isn't debugging the guest, KVM disables DR interception and loads the guest's values into hardware on VM-Enter and saves them on VM-Exit. This allows the guest to access DRs at will, e.g. so that a sequence of DR accesses to configure a breakpoint only generates one VM-Exit.

For DR0-DR3,…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns.

So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.(CVE-2022-49377)

In the Linux kernel, the following vulnerability has been resolved:

macsec: fix UAF bug for real_dev

Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following:

================================================================== BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161

Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748

Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327

After commit faab39f63c1f ("net: allow out-of-order netdev unregistration") and commit e5f80fcf869a ("ipv6: give an IPv6 dev to blackhole_netdev"), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in macsec_free_netdev() to fix the problem.(CVE-2022-49390)

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: don't skip expired elements during walk

There is an asymmetry between commit/abort and preparation phase if the following conditions are met:

1. set is a verdict map ("1.2.3.4 : jump foo")
2. timeouts are enabled

In this case, following sequence is problematic:

1. element E in set S refers to chain C
2. userspace requests removal of set S
3. kernel does a set walk to decrement chain->use count for all elements from preparation phase
4. kernel does another set walk to remove elements from the commit phase (or another walk to do a chain->use increment for all elements from abort phase)

If E has already expired in 1), it will be ignored during list walk, so its use count won't have been changed.

Then, when set is culled, ->destroy callback will zap the element via nf_tables_set_elem_destroy(), but this function is only safe for elements that have been deactivated earlier from the preparation phase: lack of earlier deactivate removes the element but leaks the chain use count, which results in a WARN splat when the chain gets removed later, plus a leak of the nft_chain structure.

Update pipapo_get() not to skip expired elements, otherwise flush command reports bogus ENOENT errors.(CVE-2023-52924)

In the Linux kernel, the following vulnerability has been resolved:

powerpc/mm/fault: Fix kfence page fault reporting

copy_from_kernel_nofault() can be called when doing read of /proc/kcore. /proc/kcore can have some unmapped kfence objects which when read via copy_from_kernel_nofault() can cause page faults. Since *_nofault() functions define their own fixup table for handling fault, use that instead of…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

blk-mq: don't touch ->tagset in blk_mq_get_sq_hctx

blk_mq_run_hw_queues() could be run when there isn't queued request and after queue is cleaned up, at that time tagset is freed, because tagset lifetime is covered by driver, and often freed after blk_cleanup_queue() returns.

So don't touch ->tagset for figuring out current default hctx by the mapping built in request queue, so use-after-free on tagset can be avoided. Meantime this way should be fast than retrieving mapping from tagset.(CVE-2022-49377)

In the Linux kernel, the following vulnerability has been resolved:

macsec: fix UAF bug for real_dev

Create a new macsec device but not get reference to real_dev. That can not ensure that real_dev is freed after macsec. That will trigger the UAF bug for real_dev as following:

================================================================== BUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 Call Trace: ... macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662 dev_get_iflink+0x73/0xe0 net/core/dev.c:637 default_operstate net/core/link_watch.c:42 [inline] rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54 linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161

Allocated by task 22209: ... alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549 rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235 veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748

Freed by task 8: ... kfree+0xd6/0x4d0 mm/slub.c:4552 kvfree+0x42/0x50 mm/util.c:615 device_release+0x9f/0x240 drivers/base/core.c:2229 kobject_cleanup lib/kobject.c:673 [inline] kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x540 lib/kobject.c:721 netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327

After commit faab39f63c1f ("net: allow out-of-order netdev unregistration") and commit e5f80fcf869a ("ipv6: give an IPv6 dev to blackhole_netdev"), we can add dev_hold_track() in macsec_dev_init() and dev_put_track() in macsec_free_netdev() to fix the problem.(CVE-2022-49390)

In the Linux kernel, the following vulnerability has been resolved:

powerpc/mm/fault: Fix kfence page fault reporting

copy_from_kernel_nofault() can be called when doing read of /proc/kcore. /proc/kcore can have some unmapped kfence objects which when read via copy_from_kernel_nofault() can cause page faults. Since *_nofault() functions define their own fixup table for handling fault, use that instead of asking kfence to handle such faults.

Hence we search the exception tables for the nip which generated the fault. If there is an entry then we let the fixup table handler handle the page fault by returning an error from within ___do_page_fault().

This can be easily triggered if someone tries to do dd from /proc/kcore. eg. dd if=/proc/kcore of=/dev/null bs=1M

Some example false negatives:

=============================== BUG: KFENCE: invalid read in copy_from_kernel_nofault+0x9c/0x1a0 Invalid read at 0xc0000000fdff0000: copy_from_kernel_nofault+0x9c/0x1a0 0xc00000000665f950 read_kcore_iter+0x57c/0xa04 proc_reg_read_iter+0xe4/0x16c vfs_read+0x320/0x3ec ksys_read+0x90/0x154 system_call_exception+0x120/0x310 system_call_vectored_common+0x15c/0x2ec

BUG: KFENCE: use-after-free read in copy_from_kernel_nofault+0x9c/0x1a0 Use-after-free read at 0xc0000000fe050000 (in kfence-#2): copy_from_kernel_nofault+0x9c/0x1a0 0xc00000000665f950 read_kcore_iter+0x57c/0xa04 proc_reg_read_iter+0xe4/0x16c vfs_read+0x320/0x3ec ksys_read+0x90/0x154 system_call_exception+0x120/0x310 system_call_vectored_common+0x15c/0x2ec(CVE-2024-56678)

In the Linux kernel, the following vulnerability has been resolved:

nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur

The action force…

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: padata: fix UAF in padata_reorder (CVE-2025-21727)

• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)

• kernel: HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove() (CVE-2025-21929)

• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)

• kernel: ext4: avoid journaling sb update on error if journal is destroying (CVE-2025-22113)

• kernel: RDMA/core: Fix use-after-free when rename device name (CVE-2025-22085)

• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)

• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)

• kernel: net: ch9200: fix uninitialised access during mii_nway_restart (CVE-2025-38086)

• kernel: net/sched: fix use-after-free in taprio_dev_notifier (CVE-2025-38087)

• kernel: nvme-tcp: sanitize request list handling (CVE-2025-38264)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: padata: fix UAF in padata_reorder (CVE-2025-21727)

• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)

• kernel: HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove() (CVE-2025-21929)

• kernel: cifs: Fix integer overflow while processing closetimeo mount option (CVE-2025-21962)

• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)

• kernel: misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram() (CVE-2022-49788)

• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)

• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)

• kernel: net/sched: fix use-after-free in taprio_dev_notifier (CVE-2025-38087)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)

• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)

• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)

• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)

• kernel: crypto: algif_hash - fix double free in hash_accept (CVE-2025-38079)

• kernel: ext4: avoid resizing to a partial cluster size (CVE-2022-50020)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)

• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)

• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)

• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)

• kernel: crypto: algif_hash - fix double free in hash_accept (CVE-2025-38079)

• kernel: ext4: avoid resizing to a partial cluster size (CVE-2022-50020)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Root has patched CVE-2025-38052 in the linux package for Root:Debian:11. Multiple fixed versions available.

Root has patched CVE-2025-38052 in the linux package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2025-38052 in the linux package for Root:Ubuntu:22.04. Multiple fixed versions available.

Root has patched CVE-2025-38052 in the linux package for Root:Ubuntu:24.04. Multiple fixed versions available.

In the Linux kernel, the following vulnerability has been resolved: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done Syzbot reported a slab-use-after-free with the following call trace: ================================================================== BUG: KASAN: slab-use-after-free in tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 Read of size 8 at addr ffff88807a733000 by task kworker/1:0/25 Call Trace: kasan_report+0xd9/0x110 mm/kasan/report.c:601 tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 crypto_request_complete include/crypto/algapi.h:266 aead_request_complete include/crypto/internal/aead.h:85 cryptd_aead_crypt+0x3b8/0x750 crypto/cryptd.c:772 crypto_request_complete include/crypto/algapi.h:266 cryptd_queue_worker+0x131/0x200 crypto/cryptd.c:181 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 Allocated by task 8355: kzalloc_noprof include/linux/slab.h:778 tipc_crypto_start+0xcc/0x9e0 net/tipc/crypto.c:1466 tipc_init_net+0x2dd/0x430 net/tipc/core.c:72 ops_init+0xb9/0x650 net/core/net_namespace.c:139 setup_net+0x435/0xb40 net/core/net_namespace.c:343 copy_net_ns+0x2f0/0x670 net/core/net_namespace.c:508 create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x419/0x970 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 Freed by task 63: kfree+0x12a/0x3b0 mm/slub.c:4557 tipc_crypto_stop+0x23c/0x500 net/tipc/crypto.c:1539 tipc_exit_net+0x8c/0x110 net/tipc/core.c:119 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:173 cleanup_net+0x5b7/0xbf0 net/core/net_namespace.c:640 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 After freed the tipc_crypto tx by delete namespace, tipc_aead_encrypt_done may still visit it in cryptd_queue_worker workqueue. I reproduce this issue by: ip netns add ns1 ip link add veth1 type veth peer name veth2 ip link set veth1 netns ns1 ip netns exec ns1 tipc bearer enable media eth dev veth1 ip netns exec ns1 tipc node set key this_is_a_master_key master ip netns exec ns1 tipc bearer disable media eth dev veth1 ip netns del ns1 The key of reproduction is that, simd_aead_encrypt is interrupted, leading to crypto_simd_usable() return false. Thus, the cryptd_queue_worker is triggered, and the tipc_crypto tx will be visited. tipc_disc_timeout tipc_bearer_xmit_skb tipc_crypto_xmit tipc_aead_encrypt crypto_aead_encrypt // encrypt() simd_aead_encrypt // crypto_simd_usable() is false child = &ctx->cryptd_tfm->base; simd_aead_encrypt crypto_aead_encrypt // encrypt() cryptd_aead_encrypt_enqueue cryptd_aead_enqueue cryptd_enqueue_request // trigger cryptd_queue_worker queue_work_on(smp_processor_id(), cryptd_wq, &cpu_queue->work) Fix this by holding net reference count before encrypt.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: padata: fix UAF in padata_reorder (CVE-2025-21727)
• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)
• kernel: HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove() (CVE-2025-21929)
• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)
• kernel: ext4: avoid journaling sb update on error if journal is destroying (CVE-2025-22113)
• kernel: RDMA/core: Fix use-after-free when rename device name (CVE-2025-22085)
• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)
• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)
• kernel: net: ch9200: fix uninitialised access during mii_nway_restart (CVE-2025-38086)
• kernel: net/sched: fix use-after-free in taprio_dev_notifier (CVE-2025-38087)
• kernel: nvme-tcp: sanitize request list handling (CVE-2025-38264)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: padata: fix UAF in padata_reorder (CVE-2025-21727)
• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)
• kernel: HID: intel-ish-hid: Fix use-after-free issue in hid_ishtp_cl_remove() (CVE-2025-21929)
• kernel: cifs: Fix integer overflow while processing closetimeo mount option (CVE-2025-21962)
• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)
• kernel: misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram() (CVE-2022-49788)
• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)
• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)
• kernel: net/sched: fix use-after-free in taprio_dev_notifier (CVE-2025-38087)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)
• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)
• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)
• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)
• kernel: crypto: algif_hash - fix double free in hash_accept (CVE-2025-38079)
• kernel: ext4: avoid resizing to a partial cluster size (CVE-2022-50020)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() (CVE-2025-21928)
• kernel: memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove (CVE-2025-22020)
• kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)
• kernel: net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done (CVE-2025-38052)
• kernel: crypto: algif_hash - fix double free in hash_accept (CVE-2025-38079)
• kernel: ext4: avoid resizing to a partial cluster size (CVE-2022-50020)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In the Linux kernel, the following vulnerability has been resolved:

net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done

Syzbot reported a slab-use-after-free with the following call trace:

================================================================== BUG: KASAN: slab-use-after-free in tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 Read of size 8 at addr ffff88807a733000 by task kworker/1:0/25

Call Trace: kasan_report+0xd9/0x110 mm/kasan/report.c:601 tipc_aead_encrypt_done+0x4bd/0x510 net/tipc/crypto.c:840 crypto_request_complete include/crypto/algapi.h:266 aead_request_complete include/crypto/internal/aead.h:85 cryptd_aead_crypt+0x3b8/0x750 crypto/cryptd.c:772 crypto_request_complete include/crypto/algapi.h:266 cryptd_queue_worker+0x131/0x200 crypto/cryptd.c:181 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231

Allocated by task 8355: kzalloc_noprof include/linux/slab.h:778 tipc_crypto_start+0xcc/0x9e0 net/tipc/crypto.c:1466 tipc_init_net+0x2dd/0x430 net/tipc/core.c:72 ops_init+0xb9/0x650 net/core/net_namespace.c:139 setup_net+0x435/0xb40 net/core/net_namespace.c:343 copy_net_ns+0x2f0/0x670 net/core/net_namespace.c:508 create_new_namespaces+0x3ea/0xb10 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xc0/0x1f0 kernel/nsproxy.c:228 ksys_unshare+0x419/0x970 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394

Freed by task 63: kfree+0x12a/0x3b0 mm/slub.c:4557 tipc_crypto_stop+0x23c/0x500 net/tipc/crypto.c:1539 tipc_exit_net+0x8c/0x110 net/tipc/core.c:119 ops_exit_list+0xb0/0x180 net/core/net_namespace.c:173 cleanup_net+0x5b7/0xbf0 net/core/net_namespace.c:640 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231

After freed the tipc_crypto tx by delete namespace, tipc_aead_encrypt_done may still visit it in cryptd_queue_worker workqueue.

I reproduce this issue by: ip netns add ns1 ip link add veth1 type veth peer name veth2 ip link set veth1 netns ns1 ip netns exec ns1 tipc bearer enable media eth dev veth1 ip netns exec ns1 tipc node set key this_is_a_master_key master ip netns exec ns1 tipc bearer disable media eth dev veth1 ip netns del ns1

The key of reproduction is that, simd_aead_encrypt is interrupted, leading to crypto_simd_usable() return false. Thus, the cryptd_queue_worker is triggered, and the tipc_crypto tx will be visited.

tipc_disc_timeout tipc_bearer_xmit_skb tipc_crypto_xmit tipc_aead_encrypt crypto_aead_encrypt // encrypt() simd_aead_encrypt // crypto_simd_usable() is false child = &ctx->cryptd_tfm->base;

simd_aead_encrypt crypto_aead_encrypt // encrypt() cryptd_aead_encrypt_enqueue cryptd_aead_enqueue cryptd_enqueue_request // trigger cryptd_queue_worker queue_work_on(smp_processor_id(), cryptd_wq, &cpu_queue->work)

Fix this by holding net reference count before encrypt.

• posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() {CVE-2025-38352}
• xfrm: state: fix out-of-bounds read during lookup {CVE-2024-57982}
• nfsd: fix race between laundromat and free_stateid {CVE-2024-50106}
• nfsd: split sc_status out of sc_type {CVE-2024-50106}
• nfsd: avoid race after unhash_delegation_locked() {CVE-2024-50106}
• nfsd: don't call functions with side-effecting inside WARN_ON() {CVE-2024-50106}
• can: peak_usb: fix use after free bugs {CVE-2021-47670}
• wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds {CVE-2025-38159}
• i2c/designware: Fix an initialization issue {CVE-2025-38380}
• RDMA/rxe: Fix error unwind in rxe_create_qp() {CVE-2022-50127}
• i40e: fix MMIO write access to an invalid page in i40e_clear_hw {CVE-2025-38200}
• udp: Fix memory accounting leak. {CVE-2025-22058}
• Bluetooth: hci_core: Fix use-after-free in vhci_flush() {CVE-2025-38250}
• net_sched: ets: Fix double list add in class with netem as child qdisc {CVE-2025-38085}
• mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race {CVE-2025-38085}
• mm/khugepaged: fix GUP-fast interaction by sending IPI {CVE-2025-38085}
• padata: fix UAF in padata_reorder {CVE-2025-21727}
• net/sched: Always pass notifications when child class becomes empty {CVE-2025-38350}
• codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog() {CVE-2025-38177}
• sch_ets: make est_qlen_notify() idempotent {CVE-2025-38177}
• sch_qfq: make qfq_qlen_notify() idempotent {CVE-2025-38177}
• sch_hfsc: make hfsc_qlen_notify() idempotent {CVE-2025-38177}
• sch_drr: make drr_qlen_notify() idempotent {CVE-2025-38177}
• sch_htb: make htb_qlen_notify() idempotent {CVE-2025-38177}
• sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() {CVE-2025-38000}
• net/sched: sch_qfq: Fix race condition on qfq_aggregate {CVE-2025-38477}
• tipc: Fix use-after-free in tipc_conn_close(). {CVE-2025-38464}
• RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction {CVE-2025-38211}
• scsi: lpfc: Use memcpy() for BIOS version {CVE-2025-38332}
• netfilter: xtables: avoid NFPROTO_UNSPEC where needed {CVE-2024-50038}
• netfilter: xtables: Add snapshot of hardidletimer target {CVE-2024-50038}
• crypto: algif_hash - fix double free in hash_accept {CVE-2025-38079}
• ext4: avoid resizing to a partial cluster size {CVE-2022-50020}
• net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc {CVE-2025-37890}
• net: tipc: fix refcount warning in tipc_aead_encrypt {CVE-2025-38273}
• net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done {CVE-2025-38052}
• memstick: rtsx_usb_ms: Fix slab-use-after-free in rtsx_usb_ms_drv_remove {CVE-2025-22020}

• inet: fully convert sk->sk_rx_dst to RCU rules {CVE-2021-47103}
• ALSA: usb-audio: Fix out of bounds reads when finding clock sources {CVE-2024-53150}
• posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() {CVE-2025-38352}
• can: peak_usb: fix use after free bugs {CVE-2021-47670}
• wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds {CVE-2025-38159}
• RDMA/rxe: Fix error unwind in rxe_create_qp() {CVE-2022-50127}
• i40e: fix MMIO write access to an invalid page in i40e_clear_hw {CVE-2025-38200}
• udp: Fix memory accounting leak. {CVE-2025-22058}
• ALSA: bcd2000: Fix a UAF bug on the error path of probing {CVE-2022-50083}
• ext4: correct the misjudgment in ext4_iget_extra_inode {CVE-2022-50083}
• ext4: correct max_inline_xattr_value_size computing {CVE-2022-50083}
• ext4: fix use-after-free in ext4_xattr_set_entry {CVE-2022-50083}
• ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h {CVE-2022-50083}
• Bluetooth: hci_core: Fix use-after-free in vhci_flush() {CVE-2025-38250}
• net_sched: ets: Fix double list add in class with netem as child qdisc {CVE-2025-38085}
• mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race {CVE-2025-38085}
• padata: fix UAF in padata_reorder {CVE-2025-21727}
• net/sched: Always pass notifications when child class becomes empty {CVE-2025-38350}
• codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog() {CVE-2025-38177}
• sch_ets: make est_qlen_notify() idempotent {CVE-2025-38177}
• sch_qfq: make qfq_qlen_notify() idempotent {CVE-2025-38177}
• sch_hfsc: make hfsc_qlen_notify() idempotent {CVE-2025-38177}
• sch_drr: make drr_qlen_notify() idempotent {CVE-2025-38177}
• sch_htb: make htb_qlen_notify() idempotent {CVE-2025-38177}
• sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() {CVE-2025-38000}
• mptcp: do not queue data on closed subflows {CVE-2022-50070}
• mptcp: export mptcp_subflow_active {CVE-2022-50070}
• net/sched: sch_qfq: Fix race condition on qfq_aggregate {CVE-2025-38477}
• tipc: Fix use-after-free in tipc_conn_close(). {CVE-2025-38464}
• RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction {CVE-2025-38211}
• scsi: lpfc: Use memcpy() for BIOS version {CVE-2025-38332}
• crypto: algif_hash - fix double free in hash_accept {CVE-2025-38079}
• net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc {CVE-2025-37890}
• ext4: avoid resizing to a partial cluster size {CVE-2022-50020}
• net: tipc: fix refcount warning in tipc_aead_encrypt {CVE-2025-38273}
• ice: xsk: prohibit usage of non-balanced queue id {CVE-2022-50003}
• net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done {CVE-2025-38052}
• virtio-gpu: fix a missing check to avoid NULL dereference {CVE-2022-50181}
• usb: xhci_plat_remove: avoid NULL dereference {CVE-2022-50133}
• ASoC: SOF: Intel: hda-ipc: Do not process IPC reply before firmware boot {CVE-2022-50015}
• netfilter: nft_tproxy: restrict to prerouting hook {CVE-2022-50001}
• scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq {CVE-2022-49986}
• ath11k: fix netdev open race {CVE-2022-50187}

• inet: fully convert sk->sk_rx_dst to RCU rules {CVE-2021-47103}
• ALSA: usb-audio: Fix out of bounds reads when finding clock sources {CVE-2024-53150}
• posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() {CVE-2025-38352}
• can: peak_usb: fix use after free bugs {CVE-2021-47670}
• wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds {CVE-2025-38159}
• RDMA/rxe: Fix error unwind in rxe_create_qp() {CVE-2022-50127}
• i40e: fix MMIO write access to an invalid page in i40e_clear_hw {CVE-2025-38200}
• udp: Fix memory accounting leak. {CVE-2025-22058}
• ALSA: bcd2000: Fix a UAF bug on the error path of probing {CVE-2022-50083}
• ext4: correct the misjudgment in ext4_iget_extra_inode {CVE-2022-50083}
• ext4: correct max_inline_xattr_value_size computing {CVE-2022-50083}
• ext4: fix use-after-free in ext4_xattr_set_entry {CVE-2022-50083}
• ext4: add EXT4_INODE_HAS_XATTR_SPACE macro in xattr.h {CVE-2022-50083}
• Bluetooth: hci_core: Fix use-after-free in vhci_flush() {CVE-2025-38250}
• net_sched: ets: Fix double list add in class with netem as child qdisc {CVE-2025-38085}
• mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race {CVE-2025-38085}
• padata: fix UAF in padata_reorder {CVE-2025-21727}
• net/sched: Always pass notifications when child class becomes empty {CVE-2025-38350}
• codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog() {CVE-2025-38177}
• sch_ets: make est_qlen_notify() idempotent {CVE-2025-38177}
• sch_qfq: make qfq_qlen_notify() idempotent {CVE-2025-38177}
• sch_hfsc: make hfsc_qlen_notify() idempotent {CVE-2025-38177}
• sch_drr: make drr_qlen_notify() idempotent {CVE-2025-38177}
• sch_htb: make htb_qlen_notify() idempotent {CVE-2025-38177}
• sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() {CVE-2025-38000}
• mptcp: do not queue data on closed subflows {CVE-2022-50070}
• mptcp: export mptcp_subflow_active {CVE-2022-50070}
• net/sched: sch_qfq: Fix race condition on qfq_aggregate {CVE-2025-38477}
• tipc: Fix use-after-free in tipc_conn_close(). {CVE-2025-38464}
• RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction {CVE-2025-38211}
• scsi: lpfc: Use memcpy() for BIOS version {CVE-2025-38332}
• crypto: algif_hash - fix double free in hash_accept {CVE-2025-38079}
• ext4: avoid resizing to a partial cluster size {CVE-2022-50020}
• net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc {CVE-2025-37890}
• net: tipc: fix refcount warning in tipc_aead_encrypt {CVE-2025-38273}
• ice: xsk: prohibit usage of non-balanced queue id {CVE-2022-50003}
• net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done {CVE-2025-38052}
• virtio-gpu: fix a missing check to avoid NULL dereference {CVE-2022-50181}
• usb: xhci_plat_remove: avoid NULL dereference {CVE-2022-50133}
• ASoC: SOF: Intel: hda-ipc: Do not process IPC reply before firmware boot {CVE-2022-50015}
• netfilter: nft_tproxy: restrict to prerouting hook {CVE-2022-50001}
• scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq {CVE-2022-49986}
• ath11k: fix netdev open race {CVE-2022-50187}

• tls: always refresh the queue when reading sock {CVE-2025-38471}
• Bluetooth: hci_core: Fix use-after-free in vhci_flush() {CVE-2025-38250}
• i2c/designware: Fix an initialization issue {CVE-2025-38380}
• wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds {CVE-2025-38159}
• mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race {CVE-2025-38085}
• mm/khugepaged: fix GUP-fast interaction by sending IPI
• bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type() {CVE-2025-21867}
• crypto: algif_hash - fix double free in hash_accept {CVE-2025-38079}
• ext4: avoid journaling sb update on error if journal is destroying {CVE-2025-22113}
• ext4: define ext4_journal_destroy wrapper
• Bluetooth: L2CAP: Fix slab-use-after-free in l2cap_connect() {CVE-2024-36013}
• Bluetooth: Remove BT_HS {CVE-2024-38620}
• block, bfq: fix bfqq uaf in bfq_limit_depth() {CVE-2024-53166}
• dm-crypt: don't modify the data when using authenticated encryption {CVE-2024-26763}
• bpf: Fix helper writes to read-only maps (alt version) {CVE-2024-49861}
• bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers {CVE-2023-52621}
• netfilter: xtables: avoid NFPROTO_UNSPEC where needed {CVE-2024-50038}
• xfs: add bounds checking to xlog_recover_process_data {CVE-2024-41014}
• scsi: mpt3sas: Avoid test/set_bit() operating in non-allocated memory {CVE-2024-40901}
• net/mlx5: Add a timeout to acquire the command queue semaphore {CVE-2024-38556}
• net: tipc: fix refcount warning in tipc_aead_encrypt {CVE-2025-38273}
• net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc {CVE-2025-37890}
• net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done {CVE-2025-38052}
• misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram() {CVE-2022-49788}
• padata: fix UAF in padata_reorder {CVE-2025-21727}
• RDMA/mlx5: Fix page_size variable overflow {CVE-2025-22091}

• mac802154: llsec: reject frames shorter than the authentication tag {CVE-2026-68125}
• KVM: x86/mmu: Fix use-after-free on vendor module reload {CVE-2026-68428}
• wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper {CVE-2026-68197}
• bpf: account for current allocated stack depth in widen_imprecise_scalars() {CVE-2025-68208}
• tun: free page on build_skb failure in tun_xdp_one() {CVE-2026-46322}
• smb: client: fix potential cfid UAF in smb2_query_info_compound {CVE-2025-40320}
• net/packet: avoid fanout hook re-registration after unregister {CVE-2026-68338}
• wifi: cfg80211: cancel sched scan results work on unregister {CVE-2026-68414}
• binfmt_misc: set have_execfd only once the interpreter is opened {CVE-2026-68186}
• tracing: Fix resource leak on mmiotrace trace_pipe close {CVE-2026-68175}
• tipc: fix u16 MTU truncation in media and bearer MTU validation {CVE-2026-68297}
• net: gro: fix double aggregation of flush-marked skbs {CVE-2026-68136}
• bpf, sockmap: Reject unhashed UDP sockets on sockmap update {CVE-2026-68386}
• wifi: brcmfmac: fix 802.1X-SHA256 call trace warning {CVE-2026-68304}
• udf: fix partition descriptor append bookkeeping {CVE-2026-45991}
• Bluetooth: SCO: fix race conditions in sco_sock_connect() {CVE-2026-43023}
• smb: client: validate dacloffset before building DACL pointers {CVE-2026-46195}
• smb/client: fix out-of-bounds read in symlink_data() {CVE-2026-46185}
• net: rtnetlink: zero ifla_vf_broadcast to avoid stack infoleak in rtnl_fill_vfinfo {CVE-2026-46132}
• Bluetooth: hci_event: fix potential UAF in SSP passkey handlers {CVE-2026-46056}
• RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send {CVE-2026-45856}
• RDMA/mana: Validate rx_hash_key_len {CVE-2026-46145}
• scsi: qla2xxx: Completely fix fcport double free {CVE-2026-43414}
• bpf: Fix bpf_xdp_store_bytes proto for read-only arg {CVE-2026-45886}
• libceph: Fix slab-out-of-bounds access in auth message processing {CVE-2026-46119}
• wifi: mac80211: use safe list iteration in radar detect work {CVE-2026-46166}
• RDMA/rxe: Reject non-8-byte ATOMIC_WRITE payloads {CVE-2026-46114}
• nfsd: never defer requests during idmap lookup {CVE-2026-45983}
• drop_monitor: fix size calculations for 64-bit attributes {CVE-2026-68287}
• openvswitch: cap upcall PID array size and pre-size vport replies {CVE-2026-45840}
• procfs: fix missing RCU protection when reading real_parent in do_task_stat() {CVE-2026-46259}
• wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup() {CVE-2026-46069}
• dm mirror: fix integer overflow in create_dirty_log() {CVE-2026-46023}
• netfilter: nft_inner: Fix IPv6 inner_thoff desync {CVE-2026-46244}
• drm/dp_mst: Handle torn-down topology gracefully in drm_dp_mst_topology_queue_probe() {CVE-2026-68429}
• crypto: authencesn - reject short ahash digests during instance creation {CVE-2026-46033}
• RDMA/rxe: Fix race condition in QP timer handlers {CVE-2026-45910}
• wifi: mac80211: remove station if connection prep fails {CVE-2026-46125}
• tcp: call sk_data_ready() after listener migration {CVE-2026-46015}
• scsi: lpfc: Avoid potential ndlp use-after-free in dev_loss_tmo_callbk {CVE-2025-38289}
• net/sched: act_ct: Only release RCU read lock after ct_ft {CVE-2026-46319}
• dm: fix a buffer overflow in ioctl processing {CVE-2026-46294}
• io-wq: check that the predecessor is hashed in io_wq_remove_pending() {CVE-2026-46274}
• wifi: mac80211: drop stray 'static' from fast-RX rx_result {CVE-2026-46152}
• io_uring/poll: fix signed comparison in io_poll_get_ownership() {CVE-2026-52933}
• xfrm: espintcp: do not reuse an in-progress partial send {CVE-2026-52935}
• Bluetooth: btusb: validate Realtek vendor event length {CVE-2026-68339}
• Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() {CVE-2026-53256}
• Bluetooth: RFCOMM: validate skb length in MCC handlers {CVE-2026-53254}
• netfilter: nft_exthdr: fix register tracking for F_PRESENT flag {CVE-2026-53218}
• ipc: limit next_id…

The SUSE Linux Enterprise Server 16.0 and SUSE Linux Micro 6.2 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2024-53164: net: sched: fix ordering of qlen adjustment (bsc#1234863).
• CVE-2024-57891: sched_ext: Fix invalid irq restore in scx_ops_bypass() (bsc#1235953).
• CVE-2024-57951: hrtimers: Handle CPU state correctly on hotplug (bsc#1237108).
• CVE-2024-57952: Revert "libfs: fix infinite directory reads for offset dir" (bsc#1237131).
• CVE-2024-58090: sched/core: Prevent rescheduling when interrupts are disabled (bsc#1240324).
• CVE-2025-22034: mm/rmap: avoid -EBUSY from make_device_exclusive() (bsc#1241435).
• CVE-2025-22077: Revert "smb: client: fix TCP timers deadlock after rmmod" (bsc#1241403).
• CVE-2025-23141: KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses (bsc#1242782).
• CVE-2025-37821: sched/eevdf: Fix se->slice being set to U64_MAX and resulting (bsc#1242864).
• CVE-2025-37849: KVM: arm64: Tear down vGIC on failed vCPU creation (bsc#1243000).
• CVE-2025-37856: btrfs: harden block_group::bg_list against list_del() races (bsc#1243068).
• CVE-2025-37861: scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue (bsc#1243055).
• CVE-2025-37864: net: dsa: clean up FDB, MDB, VLAN entries on unbind (bsc#1242965).
• CVE-2025-38006: net: mctp: Do not access ifa_index when missing (bsc#1244930).
• CVE-2025-38008: mm/page_alloc: fix race condition in unaccepted memory handling (bsc#1244939).
• CVE-2025-38019: mlxsw: spectrum_router: Fix use-after-free when deleting GRE net devices (bsc#1245000).
• CVE-2025-38034: btrfs: correct the order of prelim_ref arguments in btrfs__prelim_ref (bsc#1244792).
• CVE-2025-38038: cpufreq: amd-pstate: Remove unnecessary driver_lock in set_boost (bsc#1244812).
• CVE-2025-38058: __legitimize_mnt(): check for MNT_SYNC_UMOUNT should be under mount_lock (bsc#1245151).
• CVE-2025-38062: kABI: restore layout of struct msi_desc (bsc#1245216).
• CVE-2025-38075: scsi: target: iscsi: Fix timeout on deleted connection (bsc#1244734).
• CVE-2025-38101: ring-buffer: Fix buffer locking in ring_buffer_subbuf_order_set() (bsc#1245659).
• CVE-2025-38103: HID: usbhid: Eliminate recurrent out-of-bounds bug in usbhid_parse() (bsc#1245663).
• CVE-2025-38106: io_uring/sqpoll: do not put task_struct on tctx setup failure (bsc#1245664).
• CVE-2025-38117: hci_dev centralize extra lock (bsc#1245695).
• CVE-2025-38119: scsi: core: ufs: Fix a hang in the error handler (bsc#1245700).
• CVE-2025-38125: net: stmmac: make sure that ptp_rate is not 0 before configuring EST (bsc#1245710).
• CVE-2025-38146: net: openvswitch: Fix the dead loop of MPLS parse (bsc#1245767).
• CVE-2025-38160: clk: bcm: rpi: Add NULL check in raspberrypi_clk_register() (bsc#1245780).
• CVE-2025-38168: perf: arm-ni: Unregister PMUs on probe failure (bsc#1245763).
• CVE-2025-38180: net: atm: fix /proc/net/atm/lec handling (bsc#1245970).
• CVE-2025-38182: ublk: santizize the arguments from userspace when adding a device (bsc#1245937).
• CVE-2025-38184: tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer (bsc#1245956).
• CVE-2025-38185: atm: atmtcp: Free invalid length skb in atmtcp_c_send() (bsc#1246012).
• CVE-2025-38190: atm: Revert atm_account_tx() if copy_from_iter_full() fails (bsc#1245973).
• CVE-2025-38201: netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX (bsc#1245977).
• CVE-2025-38205: drm/amd/display: Avoid divide by zero by initializing dummy pitch to 1 (bsc#1246005).
• CVE-2025-38208: smb: client: add NULL check in automount_fullpath (bsc#1245815).
• CVE-2025-38216: iommu/vt-d: Restore context entry setup order for aliased devices (bsc#1245963).
• CVE-2025-38220: ext4: only dirty folios when data journaling regular files (bsc#1245966).
• CVE-2025-38222: ext4: inline: fix len overflow in ext4_prepare_inline_data (bsc#1245976).
• CVE-2025-38242: mm: userfaultfd: fix race of userfaultfd_move and swap…