CVE-2026-93245: apparmor: policy_int make sure list heads are initialized before fail path

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

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

If profile create fails before policyinit is complete the list heads are not properly initialized causing profilefree() sanity checks to trigger the following splat.

AppArmor WARN aapolicydestroy: (((!listempty(&policy->profiles) && (&policy->profiles)->prev != ((void ) 0x122 + (0xdead000000000000UL))))): WARNING: security/apparmor/lib.c:509 at aapolicydestroy+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:aapolicydestroy+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> aafreeprofile+0x9d/0x9f0 security/apparmor/policy.c:334 aaallocprofile+0x1e4/0x3e0 security/apparmor/policy.c:416 unpackprofile security/apparmor/policyunpack.c:1153 [inline] aaunpack+0x17db/0x7430 security/apparmor/policyunpack.c:1748 aareplaceprofiles+0x226/0x2a20 security/apparmor/policy.c:1183 policyupdate+0x234/0x4a0 security/apparmor/apparmorfs.c:505 profileload+0x1cb/0x320 security/apparmor/apparmorfs.c:522 vfswrite+0x296/0xba0 fs/readwrite.c:685 ksyswrite+0x150/0x270 fs/readwrite.c:739 dosyscallx64 arch/x86/entry/syscall64.c:61 [inline] dosyscall64+0x166/0x520 arch/x86/entry/syscall64.c:84 entrySYSCALL64afterhwframe+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 ORIGRAX: 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