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

ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write

A circular locking dependency involves INODE_ALLOC_SYSTEM_INODE,
EXTENT_ALLOC_SYSTEM_INODE, and ORPHAN_DIR_SYSTEM_INODE.

1. ocfs2_mknod() acquires INODE_ALLOC then EXTENT_ALLOC.

2. ocfs2_dio_end_io_write() acquires EXTENT_ALLOC for unwritten
extents, then ORPHAN_DIR via ocfs2_del_inode_from_orphan() while still
holding EXTENT_ALLOC.

3. ocfs2_wipe_inode() acquires ORPHAN_DIR then INODE_ALLOC via
ocfs2_remove_inode.

Break the cycle in ocfs2_dio_end_io_write() by freeing the allocation
contexts (releasing EXTENT_ALLOC) before acquiring ORPHAN_DIR.

WARNING: possible circular locking dependency detected
------------------------------------------------------
is trying to acquire lock:
ffff8881e78b33a0
(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at:
ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299

but task is already holding lock:
ffff8881e78b4fa0
(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at:
ocfs2_evict_inode+0xe97/0x43b0 fs/ocfs2/inode.c:1299

the existing dependency chain (in reverse order) is:

-> #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:
inode_lock include/linux/fs.h:1029 [inline]
ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2728
ocfs2_dio_end_io+0xf9c/0x1370 fs/ocfs2/aops.c:2418
dio_complete+0x25b/0x790 fs/direct-io.c:281

-> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
inode_lock include/linux/fs.h:1029 [inline]
ocfs2_reserve_suballoc_bits+0x16d/0x4840 fs/ocfs2/suballoc.c:882
ocfs2_reserve_new_metadata_blocks+0x415/0x9a0
fs/ocfs2/suballoc.c:1078
ocfs2_mknod+0x10f3/0x2260 fs/ocfs2/namei.c:351

-> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:
__lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
down_write+0x96/0x200 kernel/locking/rwsem.c:1625
inode_lock include/linux/fs.h:1029 [inline]
ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline]
ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline]
ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]
ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299

Chain exists of:
&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] -->
&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] -->
&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]

Possible unsafe locking scenario:

CPU0 CPU1
---- ----
lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]);
lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);
lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);

*** DEADLOCK ***

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8 affected < f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990
1e99bb19994246514d63e656492904176f9d5edd affected < 137e8b4823a9a11928428d4ec0a0cacb2f50a769
91e05ac2336d00d5b99fc774be4bd50039084796 affected < 4273548e418bd935430d35e9d052870f323441f3
886f97fa59d0bbfa9859fb1a66dd9e014b522d89 affected < 49b34bd3ad69611af03590a23abf2cda9ac1073d
ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e affected < ff187c502b39389b0d732cb7050a3db8e5ebfcd6
3c636a3edca9c3f180b3079f94fe7e115730d9c6 affected < ae1f3460833d3e427420ab260278ec0e45d68c86
d647c5b2fbf81560818dacade360abc8c00a9665 affected < f3dd1e534e9de64669415f8239e0094afecfed78
d647c5b2fbf81560818dacade360abc8c00a9665 affected < ff6f26c58421614b02694ac9d219ac61d924bc68
069c3fb310e9336cf48cfdf8748a32c29fd0193d affected —
5.10.258 affected < 5.10.261
5.15.209 affected < 5.15.212
6.1.175 affected < 6.1.178
6.6.140 affected < 6.6.145
6.12.86 affected < 6.12.97
6.18.27 affected < 6.18.40
7.0.4 affected < 7.1
Linux Linux affected
Version Status Constraints
7.1 affected —
0 unaffected < 7.1
5.10.261 unaffected ≤ 5.10.*
5.15.212 unaffected ≤ 5.15.*
6.1.178 unaffected ≤ 6.1.*
6.6.145 unaffected ≤ 6.6.*
6.12.97 unaffected ≤ 6.12.*
6.18.40 unaffected ≤ 6.18.*
7.1.5 unaffected ≤ 7.1.*
7.2 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/137e8b4823a9a11928428d4ec0a0cacb2f50a769 cve-icon cve-icon
https://git.kernel.org/stable/c/4273548e418bd935430d35e9d052870f323441f3 cve-icon cve-icon
https://git.kernel.org/stable/c/49b34bd3ad69611af03590a23abf2cda9ac1073d cve-icon cve-icon
https://git.kernel.org/stable/c/ae1f3460833d3e427420ab260278ec0e45d68c86 cve-icon cve-icon
https://git.kernel.org/stable/c/f0ae0a6ca87dc2d4a789f71cdedb808ba6c16990 cve-icon cve-icon
https://git.kernel.org/stable/c/f3dd1e534e9de64669415f8239e0094afecfed78 cve-icon cve-icon
https://git.kernel.org/stable/c/ff187c502b39389b0d732cb7050a3db8e5ebfcd6 cve-icon cve-icon
https://git.kernel.org/stable/c/ff6f26c58421614b02694ac9d219ac61d924bc68 cve-icon cve-icon
History

Fri, 04 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write A circular locking dependency involves INODE_ALLOC_SYSTEM_INODE, EXTENT_ALLOC_SYSTEM_INODE, and ORPHAN_DIR_SYSTEM_INODE. 1. ocfs2_mknod() acquires INODE_ALLOC then EXTENT_ALLOC. 2. ocfs2_dio_end_io_write() acquires EXTENT_ALLOC for unwritten extents, then ORPHAN_DIR via ocfs2_del_inode_from_orphan() while still holding EXTENT_ALLOC. 3. ocfs2_wipe_inode() acquires ORPHAN_DIR then INODE_ALLOC via ocfs2_remove_inode. Break the cycle in ocfs2_dio_end_io_write() by freeing the allocation contexts (releasing EXTENT_ALLOC) before acquiring ORPHAN_DIR. WARNING: possible circular locking dependency detected ------------------------------------------------------ is trying to acquire lock: ffff8881e78b33a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299 but task is already holding lock: ffff8881e78b4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe97/0x43b0 fs/ocfs2/inode.c:1299 the existing dependency chain (in reverse order) is: -> #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}: inode_lock include/linux/fs.h:1029 [inline] ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2728 ocfs2_dio_end_io+0xf9c/0x1370 fs/ocfs2/aops.c:2418 dio_complete+0x25b/0x790 fs/direct-io.c:281 -> #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: inode_lock include/linux/fs.h:1029 [inline] ocfs2_reserve_suballoc_bits+0x16d/0x4840 fs/ocfs2/suballoc.c:882 ocfs2_reserve_new_metadata_blocks+0x415/0x9a0 fs/ocfs2/suballoc.c:1078 ocfs2_mknod+0x10f3/0x2260 fs/ocfs2/namei.c:351 -> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 down_write+0x96/0x200 kernel/locking/rwsem.c:1625 inode_lock include/linux/fs.h:1029 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299 Chain exists of: &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); *** DEADLOCK ***
Title ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-04T16:49:02.905Z

Reserved: 2026-08-26T14:34:25.799Z

Link: CVE-2026-80879

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T17:17:00.080

Modified: 2026-09-04T17:17:00.080

Link: CVE-2026-80879

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

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