CVE-2026-89601

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().

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-25)

Published

2026-09-11

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

References

• https://git.kernel.org/stable/c/356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a
• https://git.kernel.org/stable/c/5481766125041e71662f2e32ee0e91ad5f4d07f4
• https://git.kernel.org/stable/c/5efb3350230fef831167740e69e6db2861101186
• https://git.kernel.org/stable/c/b879565effd88fc119c2efea3f3868a9997ed9ba
• https://git.kernel.org/stable/c/e54de654423bee98d1ba50379b09daf97c7854a6

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