FKIE_CVE-2026-93245

Vulnerability from fkie_nvd - Published: 2026-09-24 16:17 - Updated: 2026-10-19 10:17
Severity
Summary
In 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
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0664c75afe87a1d7d4f4e1d7eecf50ad829fb6e8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3daad923a8685adb66087e0d819559b7eb6ba975
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a09a5e6512a3792c78ae8e3ca79cb55a11eed57
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5449f715f24e86648f8cc8fba8d97ff6b5d04981
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/62f159fac76468dbbfd977f4f18472d4a01e8d74
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88ba930e7d0586ca2700757249f1e6fc0bbab0fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd52ab1c5436be86f5b8ca118fa8e5d61d63ffed
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee017ef9aa2cf20d85d4a20c09ef3db9fb240310
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/lib.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "88ba930e7d0586ca2700757249f1e6fc0bbab0fc",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "ee017ef9aa2cf20d85d4a20c09ef3db9fb240310",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "62f159fac76468dbbfd977f4f18472d4a01e8d74",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "0664c75afe87a1d7d4f4e1d7eecf50ad829fb6e8",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "4a09a5e6512a3792c78ae8e3ca79cb55a11eed57",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "5449f715f24e86648f8cc8fba8d97ff6b5d04981",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "dd52ab1c5436be86f5b8ca118fa8e5d61d63ffed",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            },
            {
              "lessThan": "3daad923a8685adb66087e0d819559b7eb6ba975",
              "status": "affected",
              "version": "fe6bb31f590c9cd9c8d3ddbdfd4301f72db91718",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/apparmor/lib.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.11"
            },
            {
              "lessThan": "4.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: policy_int make sure list heads are initialized before fail path\n\nIf profile create fails before policy_init is complete the list heads\nare not properly initialized causing profile_free() sanity checks to\ntrigger the following splat.\n\nAppArmor WARN aa_policy_destroy: (((!list_empty(\u0026policy-\u003eprofiles) \u0026\u0026 (\u0026policy-\u003eprofiles)-\u003eprev != ((void *) 0x122 + (0xdead000000000000UL))))):\nWARNING: security/apparmor/lib.c:509 at aa_policy_destroy+0x164/0x1b0 security/apparmor/lib.c:509, CPU#0: syz.0.17/5541\nModules linked in:\nCPU: 0 UID: 0 PID: 5541 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:aa_policy_destroy+0x16b/0x1b0 security/apparmor/lib.c:509\nCode: 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 \u003c67\u003e 48 0f b9 3a e9 04 ff ff ff e8 66 bc 37 fd 48 8d 3d ff ef d3 0b\nRSP: 0018:ffffc9000345eaa0 EFLAGS: 00010293\nRAX: ffffffff848f530d RBX: ffff88803f734800 RCX: ffff88801af2a580\nRDX: 0000000000000000 RSI: ffffffff8e38eba4 RDI: ffffffff90634320\nRBP: 0000000000000000 R08: 0000000000000cc0 R09: 00000000ffffffff\nR10: dffffc0000000000 R11: fffffbfff1d95913 R12: dead000000000122\nR13: ffff88803f734800 R14: ffff88803f734828 R15: dffffc0000000000\nFS:  00007f5f6a1836c0(0000) GS:ffff88808c519000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055d02407b048 CR3: 0000000012aa9000 CR4: 0000000000352ef0\nCall Trace:\n \u003cTASK\u003e\n aa_free_profile+0x9d/0x9f0 security/apparmor/policy.c:334\n aa_alloc_profile+0x1e4/0x3e0 security/apparmor/policy.c:416\n unpack_profile security/apparmor/policy_unpack.c:1153 [inline]\n aa_unpack+0x17db/0x7430 security/apparmor/policy_unpack.c:1748\n aa_replace_profiles+0x226/0x2a20 security/apparmor/policy.c:1183\n policy_update+0x234/0x4a0 security/apparmor/apparmorfs.c:505\n profile_load+0x1cb/0x320 security/apparmor/apparmorfs.c:522\n vfs_write+0x296/0xba0 fs/read_write.c:685\n ksys_write+0x150/0x270 fs/read_write.c:739\n do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]\n do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f5f6939e0d9\nCode: 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 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007f5f6a183028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00007f5f69625fa0 RCX: 00007f5f6939e0d9\nRDX: 0000000000000041 RSI: 0000200000000400 RDI: 0000000000000003\nRBP: 00007f5f6a183090 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001\nR13: 00007f5f69626038 R14: 00007f5f69625fa0 R15: 00007ffe23725c18"
    }
  ],
  "id": "CVE-2026-93245",
  "lastModified": "2026-10-19T10:17:15.633",
  "metrics": {},
  "published": "2026-09-24T16:17:20.473",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0664c75afe87a1d7d4f4e1d7eecf50ad829fb6e8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3daad923a8685adb66087e0d819559b7eb6ba975"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4a09a5e6512a3792c78ae8e3ca79cb55a11eed57"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5449f715f24e86648f8cc8fba8d97ff6b5d04981"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/62f159fac76468dbbfd977f4f18472d4a01e8d74"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88ba930e7d0586ca2700757249f1e6fc0bbab0fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd52ab1c5436be86f5b8ca118fa8e5d61d63ffed"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee017ef9aa2cf20d85d4a20c09ef3db9fb240310"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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