CVE-2026-89601

ext2: Fix lost inode updates for IS_SYNC inodes

State: Published
Severity: 8.8 High
Published: Sep 11, 2026
Updated: Oct 30, 2026
Reserved: Sep 11, 2026

Description

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

ext2: Fix lost inode updates for IS_SYNC inodes

ext2_setsize() and ext2_xattr_set2() had a construct like:

if (IS_SYNC(inode)) { sync_inode_metadata(inode, 1); } else { mark_inode_dirty(inode); }

which leads to lost inode updates for IS_SYNC inodes because sync_inode_metadata() does anything only if the inode is already dirty and hence inode updates may be simply lost. Fix the problem by unconditionally marking the inode dirty and *then* call sync_inode_metadata().

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 55e66d84b5272c425b324a2b247cdacacf1e10b9Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b879565effd88fc119c2efea3f3868a9997ed9baAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e54de654423bee98d1ba50379b09daf97c7854a6Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5481766125041e71662f2e32ee0e91ad5f4d07f4Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5efb3350230fef831167740e69e6db2861101186Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919aAffected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.12.114 through 6.12.Not affected 6.18.57 through 6.18.Not affected 7.2.4 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 55e66d84b5272c425b324a2b247cdacacf1e10b9Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b879565effd88fc119c2efea3f3868a9997ed9baAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e54de654423bee98d1ba50379b09daf97c7854a6Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5481766125041e71662f2e32ee0e91ad5f4d07f4Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5efb3350230fef831167740e69e6db2861101186Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919aAffected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
6.1.191 through 6.1.*Not affected
6.6.160 through 6.6.*Not affected
6.12.114 through 6.12.*Not affected
6.18.57 through 6.18.*Not affected
7.2.4 through 7.2.*Not affected
7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.