{"cve":"CVE-2024-44959","nvd":{"published":"2024-09-04T19:15:30.637","modified":"2026-08-04T11:20:04.230","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracefs: Use generic inode RCU for synchronizing freeing\n\nWith structure layout randomization enabled for 'struct inode' we need to\navoid overlapping any of the RCU-used / initialized-only-once members,\ne.g. i_lru or i_sb_list to not corrupt related list traversals when making\nuse of the rcu_head.\n\nFor an unlucky structure layout of 'struct inode' we may end up with the\nfollowing splat when running the ftrace selftests:\n\n[<...>] list_del corruption, ffff888103ee2cb0->next (tracefs_inode_cache+0x0/0x4e0 [slab object]) is NULL (prev is tracefs_inode_cache+0x78/0x4e0 [slab object])\n[<...>] ------------[ cut here ]------------\n[<...>] kernel BUG at lib/list_debug.c:54!\n[<...>] invalid opcode: 0000 [#1] PREEMPT SMP KASAN\n[<...>] CPU: 3 PID: 2550 Comm: mount Tainted: G                 N  6.8.12-grsec+ #122 ed2f536ca62f28b087b90e3cc906a8d25b3ddc65\n[<...>] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014\n[<...>] RIP: 0010:[<ffffffff84656018>] __list_del_entry_valid_or_report+0x138/0x3e0\n[<...>] Code: 48 b8 99 fb 65 f2 ff ff ff ff e9 03 5c d9 fc cc 48 b8 99 fb 65 f2 ff ff ff ff e9 33 5a d9 fc cc 48 b8 99 fb 65 f2 ff ff ff ff <0f> 0b 4c 89 e9 48 89 ea 48 89 ee 48 c7 c7 60 8f dd 89 31 c0 e8 2f\n[<...>] RSP: 0018:fffffe80416afaf0 EFLAGS: 00010283\n[<...>] RAX: 0000000000000098 RBX: ffff888103ee2cb0 RCX: 0000000000000000\n[<...>] RDX: ffffffff84655fe8 RSI: ffffffff89dd8b60 RDI: 0000000000000001\n[<...>] RBP: ffff888103ee2cb0 R08: 0000000000000001 R09: fffffbd0082d5f25\n[<...>] R10: fffffe80416af92f R11: 0000000000000001 R12: fdf99c16731d9b6d\n[<...>] R13: 0000000000000000 R14: ffff88819ad4b8b8 R15: 0000000000000000\n[<...>] RBX: tracefs_inode_cache+0x0/0x4e0 [slab object]\n[<...>] RDX: __list_del_entry_valid_or_report+0x108/0x3e0\n[<...>] RSI: __func__.47+0x4340/0x4400\n[<...>] RBP: tracefs_inode_cache+0x0/0x4e0 [slab object]\n[<...>] RSP: process kstack fffffe80416afaf0+0x7af0/0x8000 [mount 2550 2550]\n[<...>] R09: kasan shadow of process kstack fffffe80416af928+0x7928/0x8000 [mount 2550 2550]\n[<...>] R10: process kstack fffffe80416af92f+0x792f/0x8000 [mount 2550 2550]\n[<...>] R14: tracefs_inode_cache+0x78/0x4e0 [slab object]\n[<...>] FS:  00006dcb380c1840(0000) GS:ffff8881e0600000(0000) knlGS:0000000000000000\n[<...>] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[<...>] CR2: 000076ab72b30e84 CR3: 000000000b088004 CR4: 0000000000360ef0 shadow CR4: 0000000000360ef0\n[<...>] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[<...>] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[<...>] ASID: 0003\n[<...>] Stack:\n[<...>]  ffffffff818a2315 00000000f5c856ee ffffffff896f1840 ffff888103ee2cb0\n[<...>]  ffff88812b6b9750 0000000079d714b6 fffffbfff1e9280b ffffffff8f49405f\n[<...>]  0000000000000001 0000000000000000 ffff888104457280 ffffffff8248b392\n[<...>] Call Trace:\n[<...>]  <TASK>\n[<...>]  [<ffffffff818a2315>] ? lock_release+0x175/0x380 fffffe80416afaf0\n[<...>]  [<ffffffff8248b392>] list_lru_del+0x152/0x740 fffffe80416afb48\n[<...>]  [<ffffffff8248ba93>] list_lru_del_obj+0x113/0x280 fffffe80416afb88\n[<...>]  [<ffffffff8940fd19>] ? _atomic_dec_and_lock+0x119/0x200 fffffe80416afb90\n[<...>]  [<ffffffff8295b244>] iput_final+0x1c4/0x9a0 fffffe80416afbb8\n[<...>]  [<ffffffff8293a52b>] dentry_unlink_inode+0x44b/0xaa0 fffffe80416afbf8\n[<...>]  [<ffffffff8293fefc>] __dentry_kill+0x23c/0xf00 fffffe80416afc40\n[<...>]  [<ffffffff8953a85f>] ? __this_cpu_preempt_check+0x1f/0xa0 fffffe80416afc48\n[<...>]  [<ffffffff82949ce5>] ? shrink_dentry_list+0x1c5/0x760 fffffe80416afc70\n[<...>]  [<ffffffff82949b71>] ? shrink_dentry_list+0x51/0x760 fffffe80416afc78\n[<...>]  [<ffffffff82949da8>] shrink_dentry_list+0x288/0x760 fffffe80416afc80\n[<...>]  [<ffffffff8294ae75>] shrink_dcache_sb+0x155/0x420 fffffe80416afcc8\n[<...>]  [<ffffffff8953a7c3>] ? debug_smp_processor_id+0x23/0xa0 fffffe80416afce0\n[<...>]  [<ffffffff8294ad20>] ? do_one_tre\n---truncated---","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/061da60716ce0cde99f62f31937b81e1c03acef6","https://git.kernel.org/stable/c/0b6743bd60a56a701070b89fb80c327a44b7b3e2","https://git.kernel.org/stable/c/726f4c241e17be75a9cf6870d80cd7479dc89e8f"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:54:16.205165117+00:00"},"epss":{"cve":"CVE-2024-44959","score":0.00221,"percentile":0.12681,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}