CVE-2026-23193

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation.

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

udp: Deal with race between UDP socket address change and rehash

If a UDP socket changes its local address while it's receiving datagrams, as a result of connect(), there is a period during which a lookup operation might fail to find it, after the address is changed but before the secondary hash (port and address) and the four-tuple hash (local and remote ports and addresses) are updated.

Secondary hash chains were introduced by commit 30fff9231fad ("udp: bind() optimisation") and, as a result, a rehash operation became needed to make a bound socket reachable again after a connect().

This operation was introduced by commit 719f835853a9 ("udp: add rehash on connect()") which isn't however a complete fix: the socket will be found once the rehashing completes, but not while it's pending.

This is noticeable with a socat(1) server in UDP4-LISTEN mode, and a client sending datagrams to it. After the server receives the first datagram (cf. _xioopen_ipdgram_listen()), it issues a connect() to the address of the sender, in order to set up a directed flow.

Now, if the client, running on a different CPU thread, happens to send a (subsequent) datagram while the server's socket changes its address, but is not rehashed yet, this will result in a failed lookup and a port unreachable error delivered to the client, as apparent from the following reproducer:

LEN=$(($(cat /proc/sys/net/core/wmem_default) / 4)) dd if=/dev/urandom bs=1 count=${LEN} of=tmp.in

while :; do taskset -c 1 socat UDP4-LISTEN:1337,null-eof OPEN:tmp.out,create,trunc & sleep 0.1 || sleep 1 taskset -c 2 socat OPEN:tmp.in UDP4:localhost:1337,shut-null wait done

where the client will eventually get ECONNREFUSED on a write() (typically the second or third one of a given iteration):

2024/11/13 21:28:23 socat[46901] E write(6, 0x556db2e3c000, 8192): Connection refused

This issue was first observed as a seldom failure in Podman's tests checking UDP functionality while using pasta(1) to connect the container's network namespace, which leads us to a reproducer with the lookup error resulting in an ICMP packet on a tap device:

LOCAL_ADDR="$(ip -j -4 addr show|jq -rM '.[] | .addr_info[0] | select(.scope == "global").local')"

while :; do ./pasta --config-net -p pasta.pcap -u 1337 socat UDP4-LISTEN:1337,null-eof OPEN:tmp.out,create,trunc & sleep 0.2 || sleep 1 socat OPEN:tmp.in UDP4:${LOCAL_ADDR}:1337,shut-null wait cmp tmp.in tmp.out done

Once this fails:

tmp.in tmp.out differ: char 8193, line 29

we can finally have a look at what's going on:

$ tshark -r pasta.pcap 1 0.000000 :: ? ff02::16 ICMPv6 110 Multicast Listener Report Message v2 2 0.168690 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 3 0.168767 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 4 0.168806 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 5 0.168827 c6:47:05:8d:dc:04 ? Broadcast ARP 42 Who has 88.198.0.161? Tell 88.198.0.164 6 0.168851 9a:55:9a:55:9a:55 ? c6:47:05:8d:dc:04 ARP 42 88.198.0.161 is at 9a:55:9a:55:9a:55 7 0.168875 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 8 0.168896 88.198.0.164 ? 88.198.0.161 ICMP 590 Destination unreachable (Port unreachable) 9 0.168926 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 10 0.168959 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 11 0.168989 88.198.0.161 ? 88.198.0.164 UDP 4138 60260 ? 1337 Len=4096 12 0.169010 88.198.0.161 ? 88.198.0.164 UDP 42 60260 ? 1337 Len=0

On the third datagram received, the network namespace of the container initiates an ARP lookup to deliver the ICMP message.

In another…

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

udp: Deal with race between UDP socket address change and rehash

If a UDP socket changes its local address while it's receiving datagrams, as a result of connect(), there is a period during which a lookup operation might fail to find it, after the address is changed but before the secondary hash (port and address) and the four-tuple hash (local and remote ports and addresses) are updated.

Secondary hash chains were introduced by commit 30fff9231fad ("udp: bind() optimisation") and, as a result, a rehash operation became needed to make a bound socket reachable again after a connect().

This operation was introduced by commit 719f835853a9 ("udp: add rehash on connect()") which isn't however a complete fix: the socket will be found once the rehashing completes, but not while it's pending.

This is noticeable with a socat(1) server in UDP4-LISTEN mode, and a client sending datagrams to it. After the server receives the first datagram (cf. _xioopen_ipdgram_listen()), it issues a connect() to the address of the sender, in order to set up a directed flow.

Now, if the client, running on a different CPU thread, happens to send a (subsequent) datagram while the server's socket changes its address, but is not rehashed yet, this will result in a failed lookup and a port unreachable error delivered to the client, as apparent from the following reproducer:

LEN=$(($(cat /proc/sys/net/core/wmem_default) / 4)) dd if=/dev/urandom bs=1 count=${LEN} of=tmp.in

while :; do taskset -c 1 socat UDP4-LISTEN:1337,null-eof OPEN:tmp.out,create,trunc & sleep 0.1 || sleep 1 taskset -c 2 socat OPEN:tmp.in UDP4:localhost:1337,shut-null wait done

where the client will eventually get ECONNREFUSED on a write() (typically the second or third one of a given iteration):

2024/11/13 21:28:23 socat[46901] E write(6, 0x556db2e3c000, 8192): Connection refused

This issue was first observed as a seldom failure in Podman's tests checking UDP functionality while using pasta(1) to connect the container's network namespace, which leads us to a reproducer with the lookup error resulting in an ICMP packet on a tap device:

LOCAL_ADDR="$(ip -j -4 addr show|jq -rM '.[] | .addr_info[0] | select(.scope == "global").local')"

while :; do ./pasta --config-net -p pasta.pcap -u 1337 socat UDP4-LISTEN:1337,null-eof OPEN:tmp.out,create,trunc & sleep 0.2 || sleep 1 socat OPEN:tmp.in UDP4:${LOCAL_ADDR}:1337,shut-null wait cmp tmp.in tmp.out done

Once this fails:

tmp.in tmp.out differ: char 8193, line 29

we can finally have a look at what's going on:

$ tshark -r pasta.pcap 1 0.000000 :: ? ff02::16 ICMPv6 110 Multicast Listener Report Message v2 2 0.168690 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 3 0.168767 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 4 0.168806 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 5 0.168827 c6:47:05:8d:dc:04 ? Broadcast ARP 42 Who has 88.198.0.161? Tell 88.198.0.164 6 0.168851 9a:55:9a:55:9a:55 ? c6:47:05:8d:dc:04 ARP 42 88.198.0.161 is at 9a:55:9a:55:9a:55 7 0.168875 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 8 0.168896 88.198.0.164 ? 88.198.0.161 ICMP 590 Destination unreachable (Port unreachable) 9 0.168926 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 10 0.168959 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 11 0.168989 88.198.0.161 ? 88.198.0.164 UDP 4138 60260 ? 1337 Len=4096 12 0.169010 88.198.0.161 ? 88.198.0.164 UDP 42 60260 ? 1337 Len=0

On the third datagram received, the network namespace of the container initiates an ARP lookup to deliver the ICMP message.

In another…

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

udp: Deal with race between UDP socket address change and rehash

If a UDP socket changes its local address while it's receiving datagrams, as a result of connect(), there is a period during which a lookup operation might fail to find it, after the address is changed but before the secondary hash (port and address) and the four-tuple hash (local and remote ports and addresses) are updated.

Secondary hash chains were introduced by commit 30fff9231fad ("udp: bind() optimisation") and, as a result, a rehash operation became needed to make a bound socket reachable again after a connect().

This operation was introduced by commit 719f835853a9 ("udp: add rehash on connect()") which isn't however a complete fix: the socket will be found once the rehashing completes, but not while it's pending.

This is noticeable with a socat(1) server in UDP4-LISTEN mode, and a client sending datagrams to it. After the server receives the first datagram (cf. _xioopen_ipdgram_listen()), it issues a connect() to the address of the sender, in order to set up a directed flow.

Now, if the client, running on a different CPU thread, happens to send a (subsequent) datagram while the server's socket changes its address, but is not rehashed yet, this will result in a failed lookup and a port unreachable error delivered to the client, as apparent from the following reproducer:

LEN=$(($(cat /proc/sys/net/core/wmem_default) / 4)) dd if=/dev/urandom bs=1 count=${LEN} of=tmp.in

while :; do taskset -c 1 socat UDP4-LISTEN:1337,null-eof OPEN:tmp.out,create,trunc & sleep 0.1 || sleep 1 taskset -c 2 socat OPEN:tmp.in UDP4:localhost:1337,shut-null wait done

where the client will eventually get ECONNREFUSED on a write() (typically the second or third one of a given iteration):

2024/11/13 21:28:23 socat[46901] E write(6, 0x556db2e3c000, 8192): Connection refused

This issue was first observed as a seldom failure in Podman's tests checking UDP functionality while using pasta(1) to connect the container's network namespace, which leads us to a reproducer with the lookup error resulting in an ICMP packet on a tap device:

LOCAL_ADDR="$(ip -j -4 addr show|jq -rM '.[] | .addr_info[0] | select(.scope == "global").local')"

while :; do ./pasta --config-net -p pasta.pcap -u 1337 socat UDP4-LISTEN:1337,null-eof OPEN:tmp.out,create,trunc & sleep 0.2 || sleep 1 socat OPEN:tmp.in UDP4:${LOCAL_ADDR}:1337,shut-null wait cmp tmp.in tmp.out done

Once this fails:

tmp.in tmp.out differ: char 8193, line 29

we can finally have a look at what's going on:

$ tshark -r pasta.pcap 1 0.000000 :: ? ff02::16 ICMPv6 110 Multicast Listener Report Message v2 2 0.168690 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 3 0.168767 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 4 0.168806 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 5 0.168827 c6:47:05:8d:dc:04 ? Broadcast ARP 42 Who has 88.198.0.161? Tell 88.198.0.164 6 0.168851 9a:55:9a:55:9a:55 ? c6:47:05:8d:dc:04 ARP 42 88.198.0.161 is at 9a:55:9a:55:9a:55 7 0.168875 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 8 0.168896 88.198.0.164 ? 88.198.0.161 ICMP 590 Destination unreachable (Port unreachable) 9 0.168926 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 10 0.168959 88.198.0.161 ? 88.198.0.164 UDP 8234 60260 ? 1337 Len=8192 11 0.168989 88.198.0.161 ? 88.198.0.164 UDP 4138 60260 ? 1337 Len=4096 12 0.169010 88.198.0.161 ? 88.198.0.164 UDP 42 60260 ? 1337 Len=0

On the third datagram received, the network namespace of the container initiates an ARP lookup to deliver the ICMP message.

In another…

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

Security Fix(es):

• kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180)

• kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096)

• kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure (CVE-2026-23144)

• kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution (CVE-2026-23171)

• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)

• kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)

• kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)

• kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191)

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: nouveau: fix instmem race condition around ptr stores (CVE-2024-26984)

• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)

• kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231)

• kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238)

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: nouveau: fix instmem race condition around ptr stores (CVE-2024-26984)

• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)

• kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231)

• kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238)

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: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service (CVE-2025-38109)

• kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure (CVE-2026-23144)

• kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution (CVE-2026-23171)

• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)

• kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)

• kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)

• kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191)

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-2026-23193 in the linux package for Root:Debian:11. Multiple fixed versions available.

Root has patched CVE-2026-23193 in the linux package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2026-23193 in the linux package for Root:Debian:13. Multiple fixed versions available.

Root has patched CVE-2026-23193 in the linux package for Root:Ubuntu:22.04. Multiple fixed versions available.

Root has patched CVE-2026-23193 in the linux package for Root:Ubuntu:24.04. Multiple fixed versions available.

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation.

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

Security Fix(es):

• kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180)
• kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096)
• kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure (CVE-2026-23144)
• kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution (CVE-2026-23171)
• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)
• kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)
• kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)
• kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191)

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: nouveau: fix instmem race condition around ptr stores (CVE-2024-26984)
• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)
• kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231)
• kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238)

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: nouveau: fix instmem race condition around ptr stores (CVE-2024-26984)
• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)
• kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() (CVE-2026-23231)
• kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238)

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: Linux kernel (net/mlx5): Use-after-free in ECVF vports unload leads to denial of service (CVE-2025-38109)
• kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure (CVE-2026-23144)
• kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution (CVE-2026-23171)
• kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193)
• kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)
• kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204)
• kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191)

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:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count()

In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately.

This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free.

To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation.

• ovl: Filter invalid inodes with missing lookup function {CVE-2024-56570}
• ALSA: aloop: Fix racy access at PCM trigger {CVE-2026-23191}
• media: imon: reorganize serialization {CVE-2025-39993}
• usb: xhci: Fix inverted ring_xrun_event check in handle_tx_event() {CVE-2025-37882}
• Revert "VFS: Impose ordering on accesses of d_inode and d_flags"
• Revert "VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk"
• Revert "namei: d_is_negative() should be checked before ->d_seq validation"
• Revert "namei: results of d_is_negative() should be checked after dentry revalidation"
• Revert "namei: ->d_inode of a pinned dentry is stable only for positives"
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• net/sched: cls_u32: use skb_header_pointer_careful() {CVE-2026-23204}
• net: add skb_header_pointer_careful() helper {CVE-2026-23204}
• ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() {CVE-2026-23089}
• NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid {CVE-2025-68349}
• net/sched: Enforce that teql can only be used as root qdisc {CVE-2026-23074}

• ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() {CVE-2026-23089}
• HID: core: Harden s32ton() against conversion to 0 bits {CVE-2025-38556}
• KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory {CVE-2024-50115}
• KVM: x86: Reset IRTE to host control if new route isn't postable {CVE-2025-37885}
• NFSD: Protect against send buffer overflow in NFSv2 READ {CVE-2022-43945}
• NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid {CVE-2025-68349}
• Revert "IB/core: Implement clear counters"
• Revert "IB/mlx5: Implement clear counters"
• Revert "ib/core: add SET_DEVICE_OP call for clear_hw_stats()"
• Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()"
• Revert "xfrm: destroy xfrm_state synchronously on net exit path"
• bpf, sockmap: Fix race between element replace and close() {CVE-2024-56664}
• can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak {CVE-2026-23061}
• crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec {CVE-2026-23060}
• crypto: lzo - Fix compression buffer overrun {CVE-2025-38068}
• drm/amd/pm: fix the Out-of-bounds read warning {CVE-2024-46731}
• drm/amdgpu: Fix out-of-bounds read of df_v1_7_channel_number {CVE-2024-46724}
• drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer {CVE-2024-49991}
• ext4/jbd2: skip sb flush when EIO happened
• ext4: save the error code which triggered an
• fou: remove warn in gue_gro_receive on unsupported protocol {CVE-2024-44940}
• fs: proc: inode: delay put_pid() by RCU
• fs: writeback: fix use-after-free in __mark_inode_dirty() {CVE-2025-39866}
• genirq/cpuhotplug: Notify about affinity changes breaking the affinity mask
• io_uring: fix filename leak in __io_openat_prep() {CVE-2025-68814}
• jbd2: store more accurate errno in superblock
• libceph: fix potential use-after-free in have_mon_and_osd_map() {CVE-2025-68285}
• libceph: make free_choose_arg_map() resilient to partial allocation {CVE-2026-22991}
• macvlan: Add nodst option to macvlan type source
• macvlan: Use 'hash' iterators to simplify code
• macvlan: fix error recovery in macvlan_common_newlink() {CVE-2026-23209}
• macvlan: fix possible UAF in macvlan_forward_source() {CVE-2026-23001}
• macvlan: observe an RCU grace period in macvlan_common_newlink() error path {CVE-2026-23273}
• media: xc2028: avoid use-after-free in load_firmware_cb() {CVE-2024-43900}
• mm: call the security_mmap_file() LSM hook in remap_file_pages() {CVE-2024-47745}
• net/sched: sch_qfq: do not free existing class in qfq_change_class() {CVE-2026-22999}
• net: sock: fix hardened usercopy panic in sock_recv_errqueue {CVE-2026-22977}
• net: usb: rtl8150: fix memory leak on usb_submit_urb() failure {CVE-2025-71154}
• rds: Add state field to RDS trace logs.
• rds: Drop rds conn in connect worker if not in down state.
• scsi: mpi3mr: Sanitise num_phys {CVE-2024-42159}
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• tty: n_gsm: Fix use-after-free in gsm_cleanup_mux {CVE-2024-50073}
• usb: core: config: Prevent OOB read in SS endpoint companion parsing {CVE-2025-39760}
• vhost-scsi: Fix handling of multiple calls to vhost_scsi_set_endpoint {CVE-2025-22083}
• wifi: iwlwifi: mvm: check n_ssids before accessing the ssids {CVE-2024-40929}
• xfrm: also call xfrm_state_delete_tunnel at destroy time for states that were never added {CVE-2025-40256}
• xfrm: delete x->tunnel as we delete x {CVE-2025-40215}
• xfrm: flush all states in xfrm_state_fini

• ovl: Filter invalid inodes with missing lookup function {CVE-2024-56570}
• ALSA: aloop: Fix racy access at PCM trigger {CVE-2026-23191}
• media: imon: reorganize serialization {CVE-2025-39993}
• usb: xhci: Fix inverted ring_xrun_event check in handle_tx_event() {CVE-2025-37882}
• Revert "VFS: Impose ordering on accesses of d_inode and d_flags"
• Revert "VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk"
• Revert "namei: d_is_negative() should be checked before ->d_seq validation"
• Revert "namei: results of d_is_negative() should be checked after dentry revalidation"
• Revert "namei: ->d_inode of a pinned dentry is stable only for positives"
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• net/sched: cls_u32: use skb_header_pointer_careful() {CVE-2026-23204}
• net: add skb_header_pointer_careful() helper {CVE-2026-23204}
• ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() {CVE-2026-23089}
• NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid {CVE-2025-68349}
• net/sched: Enforce that teql can only be used as root qdisc {CVE-2026-23074}

• ovl: Filter invalid inodes with missing lookup function {CVE-2024-56570}
• ALSA: aloop: Fix racy access at PCM trigger {CVE-2026-23191}
• media: imon: reorganize serialization {CVE-2025-39993}
• usb: xhci: Fix inverted ring_xrun_event check in handle_tx_event() {CVE-2025-37882}
• Revert "VFS: Impose ordering on accesses of d_inode and d_flags"
• Revert "VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk"
• Revert "namei: d_is_negative() should be checked before ->d_seq validation"
• Revert "namei: results of d_is_negative() should be checked after dentry revalidation"
• Revert "namei: ->d_inode of a pinned dentry is stable only for positives"
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• net/sched: cls_u32: use skb_header_pointer_careful() {CVE-2026-23204}
• net: add skb_header_pointer_careful() helper {CVE-2026-23204}
• ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() {CVE-2026-23089}
• NFSv4/pNFS: Clear NFS_INO_LAYOUTCOMMIT in pnfs_mark_layout_stateid_invalid {CVE-2025-68349}
• net/sched: Enforce that teql can only be used as root qdisc {CVE-2026-23074}

• CVE-2024-56640
  • net/smc: fix LGR and link use-after-free issue {CVE-2024-56640}
• CVE-2026-23209
  • macvlan: fix error recovery in macvlan_common_newlink() {CVE-2026-23209}
• CVE-2026-23193
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• CVE-2026-23204
  • net/sched: cls_u32: use skb_header_pointer_careful() {CVE-2026-23204}
• CVE-2025-38153
  • net: usb: aqc111: fix error handling of usbnet read calls {CVE-2025-38153}
• CVE-2024-53218
  • f2fs: fix race in concurrent f2fs_stop_gc_thread {CVE-2024-53218}
• CVE-2025-38565
  • perf/core: Exit early on perf_mmap() fail {CVE-2025-38565}
• CVE-2025-38051
  • smb: client: Fix use-after-free in cifs_fill_dirent {CVE-2025-38051}
• Miscellaneous upstream changes
  • PCI: endpoint: Fix configfs group removal on driver teardown
  • net: usb: aqc111: debug info before sanitation
  • net: add skb_header_pointer_careful() helper

• crypto: algif_aead - Fix minimum RX size check for decryption
• crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl
• crypto: authencesn - Fix src offset when decrypting in-place
• crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption
• crypto: authenc - use memcpy_sglist() instead of null skcipher
• crypto: algif_aead - snapshot IV for async AEAD requests
• crypto: algif_aead - Revert to operating out-of-place
• crypto: algif_aead - use memcpy_sglist() instead of null skcipher
• crypto: scatterwalk - Backport memcpy_sglist()
• crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec
• nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec {CVE-2026-22998}
• xfrm: add NULL check in xfrm_update_ae_params {CVE-2023-3772}
• sctp: check send stream number after wait_for_sndbuf {CVE-2023-53296}
• ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value {CVE-2022-50327}
• ext4: fix uninititialized value in 'ext4_evict_inode' {CVE-2022-50546}
• tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock(). {CVE-2025-40149}
• bpf, cpumap: Make sure kthread is running before map update returns {CVE-2023-53577}
• net: add dst_dev_rcu() helper for safe dst->dev access {CVE-2025-40135}
• net/sched: cls_u32: use skb_header_pointer_careful() {CVE-2026-23204}
• net: add skb_header_pointer_careful() helper
• net/sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner curve {CVE-2023-4623}
• ip_vti: fix potential slab-use-after-free in decode_session6 {CVE-2023-53559}
• e1000e: fix heap overflow in e1000_set_eeprom {CVE-2025-39898}
• ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control {CVE-2025-39751}
• md/raid10: fix null-ptr-deref of mreplace in raid10_sync_request {CVE-2023-53380}
• HID: uclogic: Correct devm device reference for hidinput input_dev name {CVE-2023-54207}
• ASoC: da7219: Fix an error handling path in da7219_register_dai_clks() {CVE-2022-50698}
• selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context() {CVE-2022-50699}
• scsi: qla2xxx: Check valid rport returned by fc_bsg_to_rport() {CVE-2023-54014}
• ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr() {CVE-2025-71085}
• ALSA: usb-audio: Fix use-after-free in snd_usb_mixer_free() {CVE-2026-23089}
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• drm/i915/gvt: fix gvt debugfs destroy {CVE-2023-54098}
• nfsd: provide locking for v4_end_grace {CVE-2026-22980}
• dm flakey: don't corrupt the zero page {CVE-2023-54317}
• drm/amdkfd: Fix double release compute pasid {CVE-2022-50303}
• RDMA/srpt: Fix a use-after-free {CVE-2022-50129}
• RDMA/srpt: Introduce a reference count in struct srpt_device
• RDMA/srpt: Duplicate port name members
• KVM: x86: Reset IRTE to host control if new route isn't postable {CVE-2025-37885}
• ipvlan: add ipvlan_route_v6_outbound() helper {CVE-2023-52796}
• mmc: core: use scnprintf() instead of sprintf() in sysfs show functions {CVE-2022-49267}
• rcu: Fix rcu_read_unlock() deadloop due to IRQ work {CVE-2025-39744}
• net/mlx5: Add a timeout to acquire the command queue semaphore {CVE-2024-38556}
• virtio-net: ensure the received length does not exceed allocated size {CVE-2025-38375}
• cacheinfo: Fix shared_cpu_map to handle shared caches at different levels {CVE-2023-53254}
• RDMA/mlx5: Return the firmware result upon destroying QP/RQ {CVE-2023-53286}
• RDMA/rxe: Fix mr->map double free {CVE-2022-50543}
• wifi: ath9k: Fix use-after-free in ath9k_hif_usb_disconnect() {CVE-2022-50881}
• tcp: fix a signed-integer-overflow bug in tcp_add_backlog() {CVE-2022-50865}
• NFSD: Protect against send buffer overflow in NFSv2 READ {CVE-2022-43945}
• perf/aux: Fix AUX buffer serialization {CVE-2024-46713}
• usb: xhci: Fix isochronous Ring Underrun/Overrun event handling {CVE-2025-37882}
• usb: xhci: Complete 'error mid TD' transfers when handling Missed Service
• usb: xhci: remove…

• crypto: algif_aead - Fix minimum RX size check for decryption {CVE-2026-31431}
• crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl {CVE-2026-31431}
• crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec {CVE-2026-31431}
• crypto: authencesn - Fix src offset when decrypting in-place {CVE-2026-31431}
• crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption {CVE-2026-31431}
• crypto: authenc - use memcpy_sglist() instead of null skcipher {CVE-2026-31431}
• crypto: algif_aead - snapshot IV for async AEAD requests {CVE-2026-31431}
• crypto: algif_aead - Revert to operating out-of-place {CVE-2026-31431}
• crypto: algif_aead - use memcpy_sglist() instead of null skcipher {CVE-2026-31431}
• crypto: scatterwalk - Backport memcpy_sglist() {CVE-2026-31431}
• wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request() {CVE-2022-50551}
• bonding: limit BOND_MODE_8023AD to Ethernet devices {CVE-2026-23099}
• libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• scsi: qla2xxx: Fix bsg_done() causing double free {CVE-2025-71238}
• ftrace: Fix use-after-free for dynamic ftrace_ops {CVE-2022-49892}
• intel_th: msu: Fix vmalloced buffers {CVE-2022-50142}
• vt: Clear selection before changing the font {CVE-2022-49948}
• ACPICA: Fix error code path in acpi_ds_call_control_method() {CVE-2022-50411}
• usbnet: Run unregister_netdev() before unbind_all() {CVE-2022-50220}
• ipvs: fix WARNING in ip_vs_app_net_cleanup() {CVE-2022-49917}
• bpf: Propagate error from htab_lock_bucket() to userspace {CVE-2022-50490}
• binfmt_misc: fix shift-out-of-bounds in check_special_flags {CVE-2022-50497}
• module: fix [e_shstrndx].sh_size=0 OOB access {CVE-2022-49444}
• ceph: avoid putting the realm twice when decoding snaps fails {CVE-2022-49770}
• tracing: Fix potential double free in create_var_ref() {CVE-2022-49410}
• powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue {CVE-2022-50366}
• Bluetooth: hci_sysfs: Fix attempting to call device_add multiple times {CVE-2022-50419}
• xsk: Fix xsk_diag use-after-free error during socket cleanup {CVE-2023-53426}
• svcrdma: bound check rq_pages index in inline path {CVE-2025-71068}
• net: hns3: add VLAN id validation before using {CVE-2025-71112}
• net: mdio: fix undefined behavior in bit shift for __mdiobus_register {CVE-2022-49907}
• capabilities: fix undefined behavior in bit shift for CAP_TO_MASK {CVE-2022-49870}
• ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS {CVE-2022-50315}
• i2c: piix4: Fix adapter not be removed in piix4_remove() {CVE-2022-49900}
• team: fix check for port enabled in team_queue_override_port_prio_changed() {CVE-2025-71091}
• staging: vme_user: Fix possible UAF in tsi148_dma_list_add {CVE-2022-50384}
• ALSA: ctxfi: Fix potential OOB access in audio mixer handling {CVE-2026-23076}
• ftrace: Add cond_resched() to ftrace_graph_set_hash() {CVE-2025-37940}
• net: stmmac: Fix accessing freed irq affinity_hint {CVE-2025-23155}
• ext4: set goal start correctly in ext4_mb_normalize_request {CVE-2023-54021}
• netfilter: ipset: fix region locking in hash types {CVE-2025-37997}
• openvswitch: Fix unsafe attribute parsing in output_userspace() {CVE-2025-37998}
• wifi: brcm80211: fmac: Add error handling for brcmf_usb_dl_writeimage() {CVE-2025-37990}
• nfs: handle failure of nfs_get_lock_context in unlock path {CVE-2025-38023}
• drm/amd/pm: Prevent division by zero {CVE-2025-37767}
• netfilter: ctnetlink: remove refcounting in expectation dumpers {CVE-2025-39764}
• tracing: Fix null pointer dereference in tracing_err_log_open() {CVE-2023-53167}
• ACPICA: Refuse to evaluate a method if arguments are missing {CVE-2025-38386}
• scsi: qla2xxx: Pointer may be dereferenced {CVE-2023-53150}
• net: pktgen: fix access outside of user given buffer in pktgen_thread_write() {CVE-2025-38061}
• dm cache: prevent BUG_ON by blocking retries on failed device resumes {CVE-2025-38066} -…

• crypto: algif_aead - Fix minimum RX size check for decryption {CVE-2026-31431}
• crypto: af_alg - Fix page reassignment overflow in af_alg_pull_tsgl {CVE-2026-31431}
• crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec {CVE-2026-31431}
• crypto: authencesn - Fix src offset when decrypting in-place {CVE-2026-31431}
• crypto: authencesn - Do not place hiseq at end of dst for out-of-place decryption {CVE-2026-31431}
• crypto: authenc - use memcpy_sglist() instead of null skcipher {CVE-2026-31431}
• crypto: algif_aead - snapshot IV for async AEAD requests {CVE-2026-31431}
• crypto: algif_aead - Revert to operating out-of-place {CVE-2026-31431}
• crypto: algif_aead - use memcpy_sglist() instead of null skcipher {CVE-2026-31431}
• crypto: scatterwalk - Backport memcpy_sglist() {CVE-2026-31431}
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() {CVE-2026-23216}
• VMCI: Fix use-after-free when removing resource in vmci_resource_remove() {CVE-2024-46738}
• ptp: fix integer overflow in max_vclocks_store {CVE-2024-40994}
• xsk: Fix xsk_diag use-after-free error during socket cleanup {CVE-2023-53426}
• net: hns3: add VLAN id validation before using {CVE-2025-71112}
• scsi: qla2xxx: Fix improper freeing of purex item {CVE-2025-68741}
• tracing: Consider the NULL character when validating the event length {CVE-2024-50131}
• capabilities: fix undefined behavior in bit shift for CAP_TO_MASK {CVE-2022-49870}
• scsi: libsas: Fix use-after-free bug in smp_execute_task_sg() {CVE-2022-50422}
• netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate() {CVE-2026-23111}
• team: fix check for port enabled in team_queue_override_port_prio_changed() {CVE-2025-71091}
• i2c: piix4: Fix adapter not be removed in piix4_remove() {CVE-2022-49900}
• libceph: replace overzealous BUG_ON in osdmap_apply_incremental() {CVE-2026-22990}
• RDMA/mlx5: Initialize obj_event->obj_sub_list before xa_insert {CVE-2025-38387}
• ACPICA: Refuse to evaluate a method if arguments are missing {CVE-2025-38386}
• drm/tegra: Fix a possible null pointer dereference {CVE-2025-38363}
• ACPICA: fix acpi operand cache leak in dswstate.c {CVE-2025-38345}
• ACPICA: fix acpi parse and parseext cache leaks {CVE-2025-38344}
• jbd2: fix data-race and null-ptr-deref in jbd2_journal_dirty_metadata() {CVE-2025-38337}
• x86/sgx: Prevent attempts to reclaim poisoned pages {CVE-2025-38334}
• mpls: Use rcu_dereference_rtnl() in mpls_route_input_rcu(). {CVE-2025-38324}
• drm/amd/pp: Fix potential NULL pointer dereference in atomctrl_initialize_mc_reg_table {CVE-2025-38319}
• fbdev: core: fbcvt: avoid division by 0 in fb_cvt_hperiod() {CVE-2025-38312}
• seg6: Fix validation of nexthop addresses {CVE-2025-38310}
• bpf: Fix WARN() in get_bpf_raw_tp_regs {CVE-2025-38285}
• atm: clip: prevent NULL deref in clip_push() {CVE-2025-38251}
• nfsd: Initialize ssc before laundromat_work to prevent NULL dereference {CVE-2025-38231}
• ext4: inline: fix len overflow in ext4_prepare_inline_data {CVE-2025-38222}
• fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var {CVE-2025-38215}
• fbdev: Fix fb_set_var to prevent null-ptr-deref in fb_videomode_to_var {CVE-2025-38214}
• atm: Revert atm_account_tx() if copy_from_iter_full() fails. {CVE-2025-38190}
• tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer {CVE-2025-38184}
• calipso: Fix null-ptr-deref in calipso_req_{set,del}attr(). {CVE-2025-38181}
• thunderbolt: Do not double dequeue a configuration request {CVE-2025-38174}
• bpf: fix ktls panic with sockmap {CVE-2025-38166}
• gve: add missing NULL check for gve_alloc_pending_packet() in TX DQO {CVE-2025-38122}
• net_sched: sch_sfq: fix a potential crash on gso_skb handling {CVE-2025-38115}
• x86/iopl: Cure TIF_IO_BITMAP inconsistencies {CVE-2025-38100}
• dma-buf: insert memory barrier before updating num_fences {CVE-2025-38095}
• net_sched: prio: fix a race in prio_tune() {CVE-2025-38083} -…

• scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() {CVE-2026-23216}
• e1000: fix OOB in e1000_tbi_should_accept() {CVE-2025-71093}
• libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• scsi: mpt3sas: Fix kernel panic during drive powercycle test {CVE-2021-47565}
• net/sched: act_skbmod: Skip non-Ethernet packets {CVE-2021-47293}
• scsi: scsi_debug: Fix out-of-bound read in resp_report_tgtpgs() {CVE-2021-47219}
• net: validate lwtstate->data before returning from skb_tunnel_info() {CVE-2021-47309}
• regmap: Fix possible double-free in regcache_rbtree_exit() {CVE-2021-47483}
• Squashfs: check metadata block offset is within range {CVE-2026-23388}
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• isdn: cpai: check ctr->cnr to avoid array index out of bound {CVE-2021-3896}
• scsi: scsi_debug: Fix out-of-bound read in resp_readcap16() {CVE-2021-47191}
• media: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf() {CVE-2021-47288}
• net/mlx4_en: Fix an use-after-free bug in mlx4_en_try_alloc_resources() {CVE-2021-47541}
• scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select() {CVE-2021-47576}
• igbvf: fix double free in igbvf_probe {CVE-2021-47589}
• dm btree remove: fix use after free in rebalance_children() {CVE-2021-47600}
• RDMA/cxgb4: Do not dma memory off of the stack {CVE-2019-17075}
• ALSA: ctxfi: Fix potential OOB access in audio mixer handling {CVE-2026-23076}
• net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak {CVE-2026-43040}
• drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() {CVE-2026-43206}
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• smb: client: reject userspace cifs.spnego descriptions
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}

• CVE-2026-23193
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• CVE-2025-71093
  • e1000: fix OOB in e1000_tbi_should_accept() {CVE-2025-71093}
• CVE-2025-71116
  • libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• CVE-2025-71136
  • media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status() {CVE-2025-71136}
• CVE-2026-23073
  • wifi: rsi: Fix memory corruption due to not set vif driver data size {CVE-2026-23073}
• CVE-2026-23076
  • ALSA: ctxfi: Fix potential OOB access in audio mixer handling {CVE-2026-23076}
• CVE-2026-23216
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() {CVE-2026-23216}
• Miscellaneous upstream changes
  • UBUNTU: restore debian/changelog as regular file (cranky-faithful packaging)
  • smb: client: reject userspace cifs.spnego descriptions
• Bump ABI 4.15.0-258

• CVE-2026-23193
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• CVE-2025-71093
  • e1000: fix OOB in e1000_tbi_should_accept() {CVE-2025-71093}
• CVE-2025-71116
  • libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• CVE-2025-71136
  • media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status() {CVE-2025-71136}
• CVE-2026-23073
  • wifi: rsi: Fix memory corruption due to not set vif driver data size {CVE-2026-23073}
• CVE-2026-23076
  • ALSA: ctxfi: Fix potential OOB access in audio mixer handling {CVE-2026-23076}
• CVE-2026-23216
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() {CVE-2026-23216}
• Miscellaneous upstream changes
  • UBUNTU: restore debian/changelog as regular file (cranky-faithful packaging)
  • smb: client: reject userspace cifs.spnego descriptions
• Bump ABI 4.15.0-258

• CVE-2022-50093
  • iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE) {CVE-2022-50093}
• CVE-2026-31778
  • ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• CVE-2026-43011
  • net/x25: Fix potential double free of skb {CVE-2026-43011}
• CVE-2026-31602
  • ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• CVE-2026-31622
  • NFC: digital: Bounds check NFC-A cascade depth in SDD response handler {CVE-2026-31622}
• CVE-2026-31583
  • media: em28xx: fix use-after-free in em28xx_v4l2_open() {CVE-2026-31583}
• CVE-2026-31659
  • batman-adv: reject oversized global TT response buffers {CVE-2026-31659}
• CVE-2023-53596
  • drivers: base: Free devm resources when unregistering a {CVE-2023-53596}
• CVE-2026-31696
  • rxrpc: Fix missing validation of ticket length in non-XDR key preparsing {CVE-2026-31696}
• CVE-2022-50497
  • binfmt_misc: fix shift-out-of-bounds in check_special_flags {CVE-2022-50497}
• CVE-2026-23372
  • nfc: rawsock: cancel tx_work before socket teardown {CVE-2026-23372}
• CVE-2026-23193
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() {CVE-2026-23193}
• CVE-2023-53619
  • netfilter: conntrack: Avoid nf_ct_helper_hash uses after free {CVE-2023-53619}
• CVE-2023-53285
  • ext4: add bounds checking in get_max_inline_xattr_value_size() {CVE-2023-53285}
• CVE-2026-43427
  • usb: class: cdc-wdm: fix reordering issue in read code path {CVE-2026-43427}
• CVE-2026-43052
  • wifi: mac80211: check tdls flag in ieee80211_tdls_oper {CVE-2026-43052}
• CVE-2026-31405
  • media: dvb-net: fix OOB access in ULE extension header tables {CVE-2026-31405}
• CVE-2026-31629
  • nfc: llcp: add missing return after LLCP_CLOSED checks {CVE-2026-31629}
• CVE-2025-71136
  • media: adv7842: Avoid possible out-of-bounds array accesses in adv7842_cp_log_status() {CVE-2025-71136}
• CVE-2026-31417
  • net/x25: Fix overflow when accumulating packets {CVE-2026-31417}
• CVE-2026-43020
  • Bluetooth: MGMT: validate LTK enc_size on load {CVE-2026-43020}
• CVE-2026-43040
  • net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak {CVE-2026-43040}
• CVE-2022-49770
  • ceph: avoid putting the realm twice when decoding snaps fails {CVE-2022-49770}
• CVE-2026-43283
  • net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle {CVE-2026-43283}
• CVE-2026-31748
  • comedi: me_daq: Fix potential overrun of firmware buffer {CVE-2026-31748}
• CVE-2026-31747
  • comedi: me4000: Fix potential overrun of firmware buffer {CVE-2026-31747}
• CVE-2026-31576
  • media: hackrf: fix to not free memory after the device is registered in hackrf_probe() {CVE-2026-31576}
• CVE-2026-31399
  • nvdimm/bus: Fix potential use after free in asynchronous initialization {CVE-2026-31399}
• CVE-2026-23388
  • Squashfs: check metadata block offset is within range {CVE-2026-23388}
• CVE-2026-43450
  • netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}
• CVE-2026-31720
  • usb: gadget: f_uac1_legacy: validate control request size {CVE-2026-31720}
• CVE-2026-23216
  • scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() {CVE-2026-23216}
• Bump ABI 4.4.0-283

• Rebased onto Oracle UEK base 5.4.17-2136.357.2.el7uek
• sctp: don't free the ASCONF's own transport in DEL-IP processing {CVE-2026-64564}
• ocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison {CVE-2026-53309}
• ocfs2/dlm: validate qr_numregions in dlm_match_regions() {CVE-2026-53043}
• ixgbevf: fix use-after-free in VEPA multicast source pruning {CVE-2026-64113}
• ipv4: raw: reject IP_HDRINCL packets with ihl < 5 {CVE-2026-64114}
• NFSv4: include MAY_WRITE in open permission mask for O_TRUNC {CVE-2026-64298}
• fuse: re-lock request before returning from fuse_ref_folio() {CVE-2026-64266}
• scsi: isci: Fix use-after-free in device removal path {CVE-2026-64103}
• crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec {CVE-2026-23060}
• futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock {CVE-2026-53166}
• net: af_key: zero aligned sockaddr tail in PF_KEY exports {CVE-2026-43088}
• scsi: aic94xx: fix use-after-free in device removal path {CVE-2025-71075}
• i2c: piix4: Fix adapter not be removed in piix4_remove() {CVE-2022-49900}
• Bluetooth: MGMT: validate LTK enc_size on load {CVE-2026-43020}
• ext4: convert inline data to extents when truncate exceeds inline size {CVE-2026-31452}
• can: raw: fix ro->uniq use-after-free in raw_rcv() {CVE-2026-31532}
• ALSA: 6fire: fix use-after-free on disconnect {CVE-2026-31581}
• ocfs2: fix use-after-free in ocfs2_fault() when VM_FAULT_RETRY {CVE-2026-31597}
• netfilter: nf_conntrack_helper: pass helper to expect cleanup {CVE-2026-43027}
• drm/amdgpu: Fix use-after-free race in VM acquire {CVE-2026-43370}
• xfrm_user: fix info leak in build_mapping() {CVE-2026-43089}
• xfs: fix freemap adjustments when adding xattrs to leaf blocks {CVE-2026-43158}
• libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• e1000: fix OOB in e1000_tbi_should_accept() {CVE-2025-71093}
• ALSA: usb-audio: Use correct version for UAC3 header validation {CVE-2026-23318}
• nfnetlink_osf: validate individual option lengths in fingerprints {CVE-2026-23397}
• Squashfs: check metadata block offset is within range {CVE-2026-23388}
• net: bridge: fix nd_tbl NULL dereference when IPv6 is disabled {CVE-2026-23381}
• wifi: mac80211: fix NULL deref in mesh_matches_local() {CVE-2026-23396}
• icmp: fix NULL pointer dereference in icmp_tag_validation() {CVE-2026-23398}
• HID: Add HID_CLAIMED_INPUT guards in raw_event callbacks missing them {CVE-2026-23382}
• net: usb: kalmia: validate USB endpoints {CVE-2026-23365}
• wifi: radiotap: reject radiotap with unknown bits {CVE-2026-23367}
• drbd: fix "LOGIC BUG" in drbd_al_begin_io_nonblock() {CVE-2026-23356}
• batman-adv: reject oversized global TT response buffers {CVE-2026-31659}
• drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() {CVE-2026-43206}
• net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak {CVE-2026-43040}
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• nvdimm/bus: Fix potential use after free in asynchronous initialization {CVE-2026-31399}
• usb: class: cdc-wdm: fix reordering issue in read code path {CVE-2026-43427}
• media: dvb-net: fix OOB access in ULE extension header tables {CVE-2026-31405}
• sysctl: Fix data races in proc_douintvec(). {CVE-2022-49641}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• atm: lec: fix use-after-free in sock_def_readable() {CVE-2026-43050}
• fs: writeback: fix use-after-free in __mark_inode_dirty() {CVE-2025-39866}
• usb: core: config: Prevent OOB read in SS endpoint companion parsing {CVE-2025-39760}
• crypto: lzo - Fix compression buffer overrun {CVE-2025-38068}
• KVM: x86: Reset IRTE to host control if new route isn't postable {CVE-2025-37885}
• vhost-scsi: Fix handling of multiple calls to vhost_scsi_set_endpoint {CVE-2025-22083}
• mm:…