apparmor: policy_int make sure list heads are initialized before fail path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93245
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 16:17:20 UTC
Updated2026-09-24 16:17:20 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: apparmor: policy_int make sure list heads are initialized before fail path If profile create fails before policy_init is complete the list heads are not properly initialized causing profile_free() sanity checks to trigger the following splat. AppArmor WARN aa_policy_destroy: (((!list_empty(&policy->profiles) && (&policy->profiles)->prev != ((void *) 0x122 + (0xdead000000000000UL))))): WARNING: security/apparmor/lib.c:509 at aa_policy_destroy+0x164/0x1b0 security/apparmor/lib.c:509, CPU#0: syz.0.17/5541 Modules linked in: CPU: 0 UID: 0 PID: 5541 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:aa_policy_destroy+0x16b/0x1b0 security/apparmor/lib.c:509 Code: 85 ed 7e 4d e8 96 bc 37 fd 5b 41 5c 41 5e 41 5f 5d e9 19 27 4e 07 cc e8 83 bc 37 fd 48 8d 3d 0c f0 d3 0b 48 c7 c6 a4 eb 38 8e <67> 48 0f b9 3a e9 04 ff ff ff e8 66 bc 37 fd 48 8d 3d ff ef d3 0b RSP: 0018:ffffc9000345eaa0 EFLAGS: 00010293 RAX: ffffffff848f530d RBX: ffff88803f734800 RCX: ffff88801af2a580 RDX: 0000000000000000 RSI: ffffffff8e38eba4 RDI: ffffffff90634320 RBP: 0000000000000000 R08: 0000000000000cc0 R09: 00000000ffffffff R10: dffffc0000000000 R11: fffffbfff1d95913 R12: dead000000000122 R13: ffff88803f734800 R14: ffff88803f734828 R15: dffffc0000000000 FS: 00007f5f6a1836c0(0000) GS:ffff88808c519000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d02407b048 CR3: 0000000012aa9000 CR4: 0000000000352ef0 Call Trace: <TASK> aa_free_profile+0x9d/0x9f0 security/apparmor/policy.c:334 aa_alloc_profile+0x1e4/0x3e0 security/apparmor/policy.c:416 unpack_profile security/apparmor/policy_unpack.c:1153 [inline] aa_unpack+0x17db/0x7430 security/apparmor/policy_unpack.c:1748 aa_replace_profiles+0x226/0x2a20 security/apparmor/policy.c:1183 policy_update+0x234/0x4a0 security/apparmor/apparmorfs.c:505 profile_load+0x1cb/0x320 security/apparmor/apparmorfs.c:522 vfs_write+0x296/0xba0 fs/read_write.c:685 ksys_write+0x150/0x270 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5f6939e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5f6a183028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f5f69625fa0 RCX: 00007f5f6939e0d9 RDX: 0000000000000041 RSI: 0000200000000400 RDI: 0000000000000003 RBP: 00007f5f6a183090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f5f69626038 R14: 00007f5f69625fa0 R15: 00007ffe23725c18

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 88ba930e7d0586ca2700757249f1e6fc0bbab0fc git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 ee017ef9aa2cf20d85d4a20c09ef3db9fb240310 git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 62f159fac76468dbbfd977f4f18472d4a01e8d74 git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 0664c75afe87a1d7d4f4e1d7eecf50ad829fb6e8 git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 4a09a5e6512a3792c78ae8e3ca79cb55a11eed57 git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 5449f715f24e86648f8cc8fba8d97ff6b5d04981 git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 dd52ab1c5436be86f5b8ca118fa8e5d61d63ffed git Not specified
CNA Linux Linux affected fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718 3daad923a8685adb66087e0d819559b7eb6ba975 git Not specified
CNA Linux Linux affected 4.11 Not specified
CNA Linux Linux unaffected 4.11 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/62f159fac76468dbbfd977f4f18472d4a01e8d74 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3daad923a8685adb66087e0d819559b7eb6ba975 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/dd52ab1c5436be86f5b8ca118fa8e5d61d63ffed 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/88ba930e7d0586ca2700757249f1e6fc0bbab0fc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4a09a5e6512a3792c78ae8e3ca79cb55a11eed57 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0664c75afe87a1d7d4f4e1d7eecf50ad829fb6e8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ee017ef9aa2cf20d85d4a20c09ef3db9fb240310 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5449f715f24e86648f8cc8fba8d97ff6b5d04981 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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