{"id":"CVE-2026-90204","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: validate DIO orphan slot during inode read\n\n[BUG]\nA corrupted append-DIO dinode (high byte at offset 0xa1\ncorrupted from 0 to 1) can carry an i_dio_orphaned_slot…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: validate DIO orphan slot during inode read\n\n[BUG]\nA corrupted append-DIO dinode (high byte at offset 0xa1\ncorrupted from 0 to 1) can carry an i_dio_orphaned_slot…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 06ee5c75b57564435933fc0ffa72dc18a2fda0e7 < e35fa6eb4d2a39f8049f62361a4b44930882b5f8","Linux >= 06ee5c75b57564435933fc0ffa72dc18a2fda0e7 < 418e0ae42fa769d354b15e62c01a00413024755b","Linux >= 06ee5c75b57564435933fc0ffa72dc18a2fda0e7 < bb88131c9831075b8dc08cdd375743e5d44c7ca2","Linux 4.0"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:46.287","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90204","references":[{"url":"https://git.kernel.org/stable/c/418e0ae42fa769d354b15e62c01a00413024755b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bb88131c9831075b8dc08cdd375743e5d44c7ca2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e35fa6eb4d2a39f8049f62361a4b44930882b5f8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00167,"epssPercentile":0.06369,"ingestedAt":"2026-09-17T16:21:47.860Z","slug":"CVE-2026-90204","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: validate DIO orphan slot during inode read\n\n[BUG]\nA corrupted append-DIO dinode (high byte at offset 0xa1\ncorrupted from 0 to 1) can carry an i_dio_orphaned_slot\noutside the mounted filesystem slot range and trigger a\nuse-after-free error:\n\nBUG: KASAN: slab-use-after-free in ocfs2_get_system_file_inode+0x780/0x820 fs/ocfs2/sysfile.c:102\nRead of size 8 at addr ffff88800b767c00 by task kworker/u8:3/85\nCall Trace:\n ...\n ocfs2_get_system_file_inode+0x780/0x820 fs/ocfs2/sysfile.c:102\n ocfs2_wipe_inode+0x292/0xf70 fs/ocfs2/inode.c:840\n ocfs2_delete_inode fs/ocfs2/inode.c:1155 [inline]\n ocfs2_evict_inode+0x6c9/0x1170 fs/ocfs2/inode.c:1295\n evict+0x38e/0x8f0 fs/inode.c:810\n iput_final fs/inode.c:1914 [inline]\n iput fs/inode.c:1966 [inline]\n iput+0x55b/0x8b0 fs/inode.c:1926\n ocfs2_recover_orphans+0x610/0xe40 fs/ocfs2/journal.c:2374\n ocfs2_complete_recovery+0x5af/0xd00 fs/ocfs2/journal.c:1373\n ...\n\n[CAUSE]\nocfs2_del_inode_from_orphan() uses i_dio_orphaned_slot to index the\nslot-local system inode cache. The dinode validator does not check\nthis active slot, so an out-of-range value produces an invalid cache\nentry pointer that is dereferenced as an inode pointer.\n\n[FIX]\nReject an active i_dio_orphaned_slot outside the slot range during\ndinode validation, before DIO orphan recovery can consume it.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207175,"id":"CVE-2026-90204","ts":1789757339363,"field":"cvss","old":null,"new":"7.8"},{"seq":207174,"id":"CVE-2026-90204","ts":1789757339363,"field":"severity","old":"none","new":"high"}]}