CVE-2021-47274

In the Linux kernel, the following vulnerability has been resolved: tracing: Correct the length check which causes memory corruption We've suffered from severe kernel crashes due to memory corruption on our production environment, like, Call Trace: [1640542.554277] general protection fault: 0000 [#1] SMP PTI [1640542.554856] CPU: 17 PID: 26996 Comm: python Kdump: loaded Tainted:G [1640542.556629] RIP: 0010:kmem_cache_alloc+0x90/0x190 [1640542.559074] RSP: 0018:ffffb16faa597df8 EFLAGS: 00010286 [1640542.559587] RAX: 0000000000000000 RBX: 0000000000400200 RCX: 0000000006e931bf [1640542.560323] RDX: 0000000006e931be RSI: 0000000000400200 RDI: ffff9a45ff004300 [1640542.560996] RBP: 0000000000400200 R08: 0000000000023420 R09: 0000000000000000 [1640542.561670] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff9a20608d [1640542.562366] R13: ffff9a45ff004300 R14: ffff9a45ff004300 R15: 696c662f65636976 [1640542.563128] FS: 00007f45d7c6f740(0000) GS:ffff9a45ff840000(0000) knlGS:0000000000000000 [1640542.563937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [1640542.564557] CR2: 00007f45d71311a0 CR3: 000000189d63e004 CR4: 00000000003606e0 [1640542.565279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [1640542.566069] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [1640542.566742] Call Trace: [1640542.567009] anon_vma_clone+0x5d/0x170 [1640542.567417] __split_vma+0x91/0x1a0 [1640542.567777] do_munmap+0x2c6/0x320 [1640542.568128] vm_munmap+0x54/0x70 [1640542.569990] __x64_sys_munmap+0x22/0x30 [1640542.572005] do_syscall_64+0x5b/0x1b0 [1640542.573724] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [1640542.575642] RIP: 0033:0x7f45d6e61e27 James Wang has reproduced it stably on the latest 4.19 LTS. After some debugging, we finally proved that it's due to ftrace buffer out-of-bound access using a debug tool as follows: [ 86.775200] BUG: Out-of-bounds write at addr 0xffff88aefe8b7000 [ 86.780806] no_context+0xdf/0x3c0 [ 86.784327] __do_page_fault+0x252/0x470 [ 86.788367] do_page_fault+0x32/0x140 [ 86.792145] page_fault+0x1e/0x30 [ 86.795576] strncpy_from_unsafe+0x66/0xb0 [ 86.799789] fetch_memory_string+0x25/0x40 [ 86.804002] fetch_deref_string+0x51/0x60 [ 86.808134] kprobe_trace_func+0x32d/0x3a0 [ 86.812347] kprobe_dispatcher+0x45/0x50 [ 86.816385] kprobe_ftrace_handler+0x90/0xf0 [ 86.820779] ftrace_ops_assist_func+0xa1/0x140 [ 86.825340] 0xffffffffc00750bf [ 86.828603] do_sys_open+0x5/0x1f0 [ 86.832124] do_syscall_64+0x5b/0x1b0 [ 86.835900] entry_SYSCALL_64_after_hwframe+0x44/0xa9 commit b220c049d519 ("tracing: Check length before giving out the filter buffer") adds length check to protect trace data overflow introduced in 0fc1b09ff1ff, seems that this fix can't prevent overflow entirely, the length check should also take the sizeof entry->array[0] into account, since this array[0] is filled the length of trace data and occupy addtional space and risk overflow.

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2024-26921: Preserve kabi for sk_buff (bsc#1223138).
• CVE-2022-48686: Fix UAF when detecting digest errors (bsc#1223948). Update blacklist.conf: remove entry
• CVE-2021-47074: Fixed memory leak in nvme_loop_create_ctrl() (bsc#1220854).
• CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
• CVE-2022-48697: Fix a use-after-free (bsc#1223922). Update blacklist.conf: drop entry from it
• CVE-2024-26846: Do not wait in vain when unloading module (bsc#1223023).
• CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
• CVE-2023-42755: Check user supplied offsets (bsc#1215702).
• CVE-2023-52664: Eliminate double free in error handling logic (bsc#1224747).
• CVE-2023-52796: Add ipvlan_route_v6_outbound() helper (bsc#1224930).
• CVE-2021-47246: Fix page reclaim for dead peer hairpin (bsc#1224831).
• CVE-2023-52732: Blocklist the kclient when receiving corrupted snap trace (bsc#1225222 CVE-2023-52732).
• CVE-2024-35936: Add missing mutex_unlock in btrfs_relocate_sys_chunks() (bsc#1224644)
• CVE-2021-47548: Fixed a possible array out-of=bounds (bsc#1225506)
• CVE-2024-36029: Pervent access to suspended controller (bsc#1225708 CVE-2024-36029)
• CVE-2024-26625: Call sock_orphan() at release time (bsc#1221086)
• CVE-2021-47352: Add validation for used length (bsc#1225124).
• CVE-2023-52698: Fixed memory leak in netlbl_calipso_add_pass() (bsc#1224621)
• CVE-2021-47431: Fix gart.bo pin_count leak (bsc#1225390).
• CVE-2024-35935: Handle path ref underflow in header iterate_inode_ref() (bsc#1224645)
• CVE-2024-26828: Fixed underflow in parse_server_interfaces() (bsc#1223084).
• CVE-2021-47423: Fix file release memory leak (bsc#1225366).
• CVE-2022-48710: Fix a possible null pointer dereference (bsc#1225230).
• CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
• CVE-2024-35932: Do not check if plane->state->fb == state->fb (bsc#1224650).
• CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
• CVE-2024-35809: Drain runtime-idle callbacks before driver removal (bsc#1224738).
• CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
• CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
• CVE-2021-47509: Limit the period size to 16MB (bsc#1225409).
• CVE-2024-35877: Fixed VM_PAT handling in COW mappings (bsc#1224525).
• CVE-2024-35982: Avoid infinite loop trying to resize local TT (bsc#1224566)
• CVE-2024-35969: Fixed race condition between ipv6_get_ifaddr and ipv6_del_addr (bsc#1224580).
• CVE-2021-47277: Avoid speculation-based attacks from out-of-range memslot accesses (bsc#1224960, CVE-2021-47277).
• CVE-2024-35791: Flush pages under kvm->lock to fix UAF in svm_register_enc_region() (bsc#1224725).
• CVE-2021-47401: Fix stack information leak (bsc#1225242).
• CVE-2023-52867: Fix possible buffer overflow (bsc#1225009).
• CVE-2023-52821: Fix a possible null pointer dereference (bsc#1225022).
• CVE-2021-47265: Verify port when creating flow rule (bsc#1224957)
• CVE-2021-47362: Update intermediate power state for SI (bsc#1225153).
• CVE-2021-47361: Fix error handling in mcb_alloc_bus() (bsc#1225151).
• CVE-2023-52864: Fix opening of char device (bsc#1225132).
• CVE-2022-48708: Fix potential NULL dereference (bsc#1224942).
• CVE-2024-35944: Fixed memcpy() run-time warning in dg_dispatch_as_host() (bsc#1224648).
• CVE-2021-47238: Fix memory leak in ip_mc_add1_src (bsc#1224847)
• CVE-2023-52730: Fix possible resource leaks in some error paths (bsc#1224956).
• CVE-2021-47355: Fix possible use-after-free in nicstar_cleanup() (bsc#1225141).
• CVE-2021-47245: Fix out of bounds when parsing TCP options (bsc#1224838)
• CVE-2024-35878: Prevent NULL pointer dereference in vsnprintf() (bsc#1224671).
• CVE-2023-52747: Restore allocated resources on failed copyout (bsc#1224931) -…

The SUSE Linux Enterprise 12 SP5 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2024-26921: Preserve kabi for sk_buff (bsc#1223138).
• CVE-2022-48686: Fix UAF when detecting digest errors (bsc#1223948).
• CVE-2021-47074: Fixed memory leak in nvme_loop_create_ctrl() (bsc#1220854).
• CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
• CVE-2022-48697: Fix a use-after-free (bsc#1223922).
• CVE-2024-26846: Do not wait in vain when unloading module (bsc#1223023).
• CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
• CVE-2023-42755: Check user supplied offsets (bsc#1215702).
• CVE-2023-52664: Eliminate double free in error handling logic (bsc#1224747).
• CVE-2023-52796: Add ipvlan_route_v6_outbound() helper (bsc#1224930).
• CVE-2021-47246: Fix page reclaim for dead peer hairpin (bsc#1224831).
• CVE-2023-52732: Blocklist the kclient when receiving corrupted snap trace (bsc#1225222).
• CVE-2024-35936: Add missing mutex_unlock in btrfs_relocate_sys_chunks() (bsc#1224644)
• CVE-2021-47548: Fixed a possible array out-of-bounds (bsc#1225506)
• CVE-2024-36029: Pervent access to suspended controller (bsc#1225708)
• CVE-2024-26625: Call sock_orphan() at release time (bsc#1221086)
• CVE-2021-47352: Add validation for used length (bsc#1225124).
• CVE-2023-52698: Fixed memory leak in netlbl_calipso_add_pass() (bsc#1224621)
• CVE-2021-47431: Fix gart.bo pin_count leak (bsc#1225390).
• CVE-2024-35935: Handle path ref underflow in header iterate_inode_ref() (bsc#1224645)
• CVE-2024-26828: Fixed underflow in parse_server_interfaces() (bsc#1223084).
• CVE-2021-47423: Fix file release memory leak (bsc#1225366).
• CVE-2022-48710: Fix a possible null pointer dereference (bsc#1225230).
• CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
• CVE-2024-35932: Do not check if plane->state->fb == state->fb (bsc#1224650).
• CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
• CVE-2024-35809: Drain runtime-idle callbacks before driver removal (bsc#1224738).
• CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
• CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
• CVE-2021-47509: Limit the period size to 16MB (bsc#1225409).
• CVE-2024-35877: Fixed VM_PAT handling in COW mappings (bsc#1224525).
• CVE-2024-35982: Avoid infinite loop trying to resize local TT (bsc#1224566)
• CVE-2024-35969: Fixed race condition between ipv6_get_ifaddr and ipv6_del_addr (bsc#1224580).
• CVE-2021-47277: Avoid speculation-based attacks from out-of-range memslot accesses (bsc#1224960).
• CVE-2024-35791: Flush pages under kvm->lock to fix UAF in svm_register_enc_region() (bsc#1224725).
• CVE-2021-47401: Fix stack information leak (bsc#1225242).
• CVE-2023-52867: Fix possible buffer overflow (bsc#1225009).
• CVE-2023-52821: Fix a possible null pointer dereference (bsc#1225022).
• CVE-2021-47265: Verify port when creating flow rule (bsc#1224957)
• CVE-2021-47362: Update intermediate power state for SI (bsc#1225153).
• CVE-2021-47361: Fix error handling in mcb_alloc_bus() (bsc#1225151).
• CVE-2023-52864: Fix opening of char device (bsc#1225132).
• CVE-2022-48708: Fix potential NULL dereference (bsc#1224942).
• CVE-2024-35944: Fixed memcpy() run-time warning in dg_dispatch_as_host() (bsc#1224648).
• CVE-2021-47238: Fix memory leak in ip_mc_add1_src (bsc#1224847)
• CVE-2023-52730: Fix possible resource leaks in some error paths (bsc#1224956).
• CVE-2021-47355: Fix possible use-after-free in nicstar_cleanup() (bsc#1225141).
• CVE-2021-47245: Fix out of bounds when parsing TCP options (bsc#1224838)
• CVE-2024-35878: Prevent NULL pointer dereference in vsnprintf() (bsc#1224671).
• CVE-2023-52747: Restore allocated resources on failed copyout (bsc#1224931)
• CVE-2021-47249: Fix memory leak in rds_recvmsg (bsc#1224880)
• CVE-2021-47397: Break out if skb_header_pointer returns NULL in…

The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2024-26921: Preserve kabi for sk_buff (bsc#1223138).
• CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
• CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
• CVE-2021-47402: Protect fl_walk() with rcu (bsc#1225301)
• CVE-2022-48673: kABI workarounds for struct smc_link (bsc#1223934).
• CVE-2023-52871: Handle a second device without data corruption (bsc#1225534)
• CVE-2024-26828: Fixed underflow in parse_server_interfaces() (bsc#1223084).
• CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
• CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
• CVE-2024-27413: Fixed incorrect allocation size (bsc#1224438).
• CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
• CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
• CVE-2023-52840: Fix use after free in rmi_unregister_function() (bsc#1224928).
• CVE-2021-47261: Fix initializing CQ fragments buffer (bsc#1224954)
• CVE-2021-47254: Fix use-after-free in gfs2_glock_shrink_scan (bsc#1224888).
• CVE-2024-27398: Fixed use-after-free bugs caused by sco_sock_timeout (bsc#1224174).
• CVE-2024-26929: Fixed double free of fcport (bsc#1223715).
• CVE-2024-26930: Fixed double free of the ha->vp_map pointer (bsc#1223626).
• CVE-2023-52655: Check packet for fixup for true limit (bsc#1217169).
• CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve local privilege escalation (bsc#1215420).
• CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210335).
• CVE-2023-52686: Fix a null pointer in opal_event_init() (bsc#1065729).

The following non-security bugs were fixed:

• af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress (bsc#1223384).
• af_unix: Do not use atomic ops for unix_sk(sk)->inflight (bsc#1223384).
• af_unix: Replace BUG_ON() with WARN_ON_ONCE() (bsc#1223384).
• btrfs: do not start relocation until in progress drops are done (bsc#1222251).
• btrfs: do not start relocation until in progress drops are done (bsc#1222251).
• cifs: add missing spinlock around tcon refcount (bsc#1213476).
• cifs: avoid dup prefix path in dfs_get_automount_devname() (bsc#1213476).
• cifs: avoid race conditions with parallel reconnects (bsc#1213476).
• cifs: avoid re-lookups in dfs_cache_find() (bsc#1213476).
• cifs: avoid use of global locks for high contention data (bsc#1213476).
• cifs: check only tcon status on tcon related functions (bsc#1213476).
• cifs: do all necessary checks for credits within or before locking (bsc#1213476).
• cifs: do not block in dfs_cache_noreq_update_tgthint() (bsc#1213476).
• cifs: do not refresh cached referrals from unactive mounts (bsc#1213476).
• cifs: do not take exclusive lock for updating target hints (bsc#1213476).
• cifs: fix confusing debug message (bsc#1213476).
• cifs: fix missing unload_nls() in smb2_reconnect() (bsc#1213476).
• cifs: fix potential deadlock in cache_refresh_path() (bsc#1213476).
• cifs: fix refresh of cached referrals (bsc#1213476).
• cifs: fix return of uninitialized rc in dfs_cache_update_tgthint() (bsc#1213476).
• cifs: fix source pathname comparison of dfs supers (bsc#1213476).
• cifs: fix status checks in cifs_tree_connect (bsc#1213476).
• cifs: fix use-after-free bug in refresh_cache_worker() (bsc#1213476).
• cifs: get rid of dns resolve worker (bsc#1213476).
• cifs: get rid of mount options string parsing (bsc#1213476).
• cifs: handle cache lookup errors different than -ENOENT (bsc#1213476).
• cifs: ignore ipc reconnect failures during dfs failover (bsc#1213476).
• cifs: match even the scope id for ipv6 addresses (bsc#1213476).
• cifs: optimize reconnect of nested links (bsc#1213476).
• cifs: prevent data race in smb2_reconnect() (bsc#1213476). -…

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
• CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
• CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
• CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
• CVE-2024-27398: Fixed use-after-free bugs caused by sco_sock_timeout (bsc#1224174).
• CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve local privilege escalation (bsc#1215420).
• CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve local privilege escalation (bsc#1215420).
• CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210335).
• CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
• CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
• CVE-2021-47402: Protect fl_walk() with rcu (bsc#1225301)
• CVE-2022-48673: kABI workarounds for struct smc_link (bsc#1223934).
• CVE-2023-52871: Handle a second device without data corruption (bsc#1225534)
• CVE-2024-26828: Fix underflow in parse_server_interfaces() (bsc#1223084).
• CVE-2024-27413: Fix incorrect allocation size (bsc#1224438).
• CVE-2023-52840: Fix use after free in rmi_unregister_function() (bsc#1224928).
• CVE-2021-47261: Fix initializing CQ fragments buffer (bsc#1224954)
• CVE-2021-47254: Fix use-after-free in gfs2_glock_shrink_scan (bsc#1224888).
• CVE-2023-52655: Check packet for fixup for true limit (bsc#1217169).
• CVE-2023-52686: Fix a null pointer in opal_event_init() (bsc#1065729).

The following non-security bugs were fixed:

• NFC: nxp: add NXP1002 (bsc#1185589).
• PCI: rpaphp: Add MODULE_DESCRIPTION (bsc#1176869 ltc#188243).
• af_unix: Do not use atomic ops for unix_sk(sk)->inflight (bsc#1223384).
• af_unix: Replace BUG_ON() with WARN_ON_ONCE() (bsc#1223384).
• af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress (bsc#1223384).
• btrfs: do not start relocation until in progress drops are done (bsc#1222251).
• md: Replace snprintf with scnprintf (git-fixes).
• netfilter: nf_tables: GC transaction race with abort path (git-fixes).
• netfilter: nf_tables: GC transaction race with netns dismantle (git-fixes).
• netfilter: nf_tables: defer gc run if previous batch is still pending (git-fixes).
• netfilter: nf_tables: fix GC transaction races with netns and netlink event exit path (git-fixes).
• netfilter: nf_tables: fix kdoc warnings after gc rework (git-fixes).
• netfilter: nf_tables: fix memleak when more than 255 elements expired (git-fixes).
• netfilter: nf_tables: mark newset as dead on transaction abort (git-fixes).
• netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout (git-fixes).
• netfilter: nf_tables: nft_set_rbtree: fix spurious insertion failure (git-fixes).
• netfilter: nf_tables: release mutex after nft_gc_seq_end from abort path (git-fixes).
• netfilter: nf_tables: skip dead set elements in netlink dump (git-fixes).
• netfilter: nf_tables: use correct lock to protect gc_list (git-fixes).
• netfilter: nft_set_hash: try later when GC hits EAGAIN on iteration (git-fixes).
• netfilter: nft_set_rbtree: Add missing expired checks (git-fixes).
• netfilter: nft_set_rbtree: Detect partial overlap with start endpoint match (git-fixes).
• netfilter: nft_set_rbtree: Detect partial overlaps on insertion (git-fixes).
• netfilter: nft_set_rbtree: Do not account for expired elements on insertion (git-fixes).
• netfilter: nft_set_rbtree: Drop spurious condition for overlap detection on insertion (git-fixes).
• netfilter: nft_set_rbtree: Handle outcomes of tree rotations in overlap detection (git-fixes).
• netfilter: nft_set_rbtree: Introduce and use nft_rbtree_interval_start() (git-fixes). -…

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-46933: Fixed possible underflow in ffs_data_clear() (bsc#1220487).
• CVE-2021-46955: Fixed an out-of-bounds read with openvswitch, when fragmenting IPv4 packets (bsc#1220513).
• CVE-2021-47074: Fixed memory leak in nvme_loop_create_ctrl() (bsc#1220854).
• CVE-2021-47113: Abort btrfs rename_exchange if we fail to insert the second ref (bsc#1221543).
• CVE-2021-47131: Fixed a use-after-free after the TLS device goes down and up (bsc#1221545).
• CVE-2021-47206: Check return value after calling platform_get_resource() (bsc#1222894).
• CVE-2021-47238: Fixed memory leak in ip_mc_add1_src (bsc#1224847)
• CVE-2021-47245: Fixed out of bounds when parsing TCP options (bsc#1224838)
• CVE-2021-47246: Fixed page reclaim for dead peer hairpin (CVE-2021-47246 bsc#1224831).
• CVE-2021-47249: Fixed memory leak in rds_recvmsg (bsc#1224880)
• CVE-2021-47250: Fixed memory leak in netlbl_cipsov4_add_std (bsc#1224827)
• CVE-2021-47265: Verify port when creating flow rule (bsc#1224957)
• CVE-2021-47277: Avoid speculation-based attacks from out-of-range memslot accesses (bsc#1224960).
• CVE-2021-47281: Fixed race of snd_seq_timer_open() (bsc#1224983).
• CVE-2021-47334: Fixed two use after free in ibmasm_init_one (bsc#1225112).
• CVE-2021-47352: Add validation for used length (bsc#1225124).
• CVE-2021-47355: Fixed possible use-after-free in nicstar_cleanup() (bsc#1225141).
• CVE-2021-47357: Fixed possible use-after-free in ia_module_exit() (bsc#1225144).
• CVE-2021-47361: Fixed error handling in mcb_alloc_bus() (bsc#1225151).
• CVE-2021-47362: Update intermediate power state for SI (bsc#1225153).
• CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
• CVE-2021-47383: Fixed out-of-bound vmalloc access in imageblit (bsc#1225208).
• CVE-2021-47397: Break out if skb_header_pointer returns NULL in sctp_rcv_ootb (bsc#1225082)
• CVE-2021-47401: Fixed stack information leak (bsc#1225242).
• CVE-2021-47423: Fixed file release memory leak (bsc#1225366).
• CVE-2021-47431: Fixed gart.bo pin_count leak (bsc#1225390).
• CVE-2021-47469: Add SPI fix commit to be ignored (bsc#1225347)
• CVE-2021-47483: Fixed possible double-free in regcache_rbtree_exit() (bsc#1224907).
• CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
• CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
• CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
• CVE-2021-47509: Limit the period size to 16MB (bsc#1225409).
• CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
• CVE-2021-47548: Fixed a possible array out-of=bounds (bsc#1225506)
• CVE-2022-48672: Fixed off-by-one error in unflatten_dt_nodes() (CVE-2022-48672 bsc#1223931).
• CVE-2022-48686: Fixed UAF when detecting digest errors (bsc#1223948).
• CVE-2022-48697: Fixed a use-after-free (bsc#1223922).
• CVE-2022-48702: Fixed out of bounds access in snd_emu10k1_pcm_channel_alloc() (bsc#1223923).
• CVE-2022-48704: Add a force flush to delay work when radeon (bsc#1223932)
• CVE-2022-48708: Fixed potential NULL dereference (bsc#1224942).
• CVE-2022-48710: Fixed a possible null pointer dereference (bsc#1225230).
• CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210335).
• CVE-2023-42755: Check user supplied offsets (bsc#1215702).
• CVE-2023-52586: Fixed mutex lock in control vblank irq (bsc#1221081).
• CVE-2023-52655: Check packet for fixup for true limit (bsc#1217169).
• CVE-2023-52664: Eliminate double free in error handling logic (bsc#1224747).
• CVE-2023-52691: Fixed a double-free in si_dpm_init (bsc#1224607).
• CVE-2023-52698: Fixed memory leak in netlbl_calipso_add_pass() (bsc#1224621)
• CVE-2023-52730: Fixed possible resource leaks in some error paths (bsc#1224956).
• CVE-2023-52732: Blocklist the kclient when…

The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-47378: Destroy cm id before destroy qp to avoid use after free (bsc#1225201).
• CVE-2021-47496: Fix flipped sign in tls_err_abort() calls (bsc#1225354)
• CVE-2021-47402: Protect fl_walk() with rcu (bsc#1225301)
• CVE-2022-48673: kABI workarounds for struct smc_link (bsc#1223934).
• CVE-2023-52871: Handle a second device without data corruption (bsc#1225534)
• CVE-2024-26828: Fix underflow in parse_server_interfaces() (bsc#1223084).
• CVE-2021-47497: Fixed shift-out-of-bound (UBSAN) with byte size cells (bsc#1225355).
• CVE-2021-47500: Fixed trigger reference couting (bsc#1225360).
• CVE-2024-27413: Fix incorrect allocation size (bsc#1224438).
• CVE-2021-47383: Fiedx out-of-bound vmalloc access in imageblit (bsc#1225208).
• CVE-2021-47511: Fixed negative period/buffer sizes (bsc#1225411).
• CVE-2023-52840: Fix use after free in rmi_unregister_function() (bsc#1224928).
• CVE-2021-47261: Fix initializing CQ fragments buffer (bsc#1224954)
• CVE-2021-47254: Fix use-after-free in gfs2_glock_shrink_scan (bsc#1224888).
• CVE-2024-27398: Fixed use-after-free bugs caused by sco_sock_timeout (bsc#1224174).
• CVE-2024-26921: Preserve kabi for sk_buff (bsc#1223138).
• CVE-2023-52655: Check packet for fixup for true limit (bsc#1217169).
• CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve local privilege escalation (bsc#1215420).
• CVE-2023-4244: Fixed a use-after-free in the nf_tables component, which could be exploited to achieve local privilege escalation (bsc#1215420).
• CVE-2023-1829: Fixed a use-after-free vulnerability in the control index filter (tcindex) (bsc#1210335).
• CVE-2023-52686: Fix a null pointer in opal_event_init() (bsc#1065729).

The following non-security bugs were fixed:

• af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress (bsc#1223384).
• af_unix: Do not use atomic ops for unix_sk(sk)->inflight (bsc#1223384).
• af_unix: Replace BUG_ON() with WARN_ON_ONCE() (bsc#1223384).
• btrfs: do not start relocation until in progress drops are done (bsc#1222251).
• btrfs: do not start relocation until in progress drops are done (bsc#1222251).
• cifs: add missing spinlock around tcon refcount (bsc#1213476).
• cifs: avoid dup prefix path in dfs_get_automount_devname() (bsc#1213476).
• cifs: avoid race conditions with parallel reconnects (bsc#1213476).
• cifs: avoid re-lookups in dfs_cache_find() (bsc#1213476).
• cifs: avoid use of global locks for high contention data (bsc#1213476).
• cifs: check only tcon status on tcon related functions (bsc#1213476).
• cifs: do all necessary checks for credits within or before locking (bsc#1213476).
• cifs: do not block in dfs_cache_noreq_update_tgthint() (bsc#1213476).
• cifs: do not refresh cached referrals from unactive mounts (bsc#1213476).
• cifs: do not take exclusive lock for updating target hints (bsc#1213476).
• cifs: fix confusing debug message (bsc#1213476).
• cifs: fix missing unload_nls() in smb2_reconnect() (bsc#1213476).
• cifs: fix potential deadlock in cache_refresh_path() (bsc#1213476).
• cifs: fix refresh of cached referrals (bsc#1213476).
• cifs: fix return of uninitialized rc in dfs_cache_update_tgthint() (bsc#1213476).
• cifs: fix source pathname comparison of dfs supers (bsc#1213476).
• cifs: fix status checks in cifs_tree_connect (bsc#1213476).
• cifs: fix use-after-free bug in refresh_cache_worker() (bsc#1213476).
• cifs: get rid of dns resolve worker (bsc#1213476).
• cifs: get rid of mount options string parsing (bsc#1213476).
• cifs: handle cache lookup errors different than -ENOENT (bsc#1213476).
• cifs: ignore ipc reconnect failures during dfs failover (bsc#1213476).
• cifs: match even the scope id for ipv6 addresses (bsc#1213476).
• cifs: optimize reconnect of nested links (bsc#1213476).
• cifs: prevent data race in smb2_reconnect() (bsc#1213476). -…