CVE-2026-89601
High
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().
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux
PublishedSep 11, 2026
First seenSep 11, 2026
How to fix
Update
- Linux Linux55e66d84b5272c425b324a2b247cdacacf1e10b9, b879565effd88fc119c2efea3f3868a9997ed9ba, e54de654423bee98d1ba50379b09daf97c7854a6, 5481766125041e71662f2e32ee0e91ad5f4d07f4, 5efb3350230fef831167740e69e6db2861101186, 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 55e66d84b5272c425b324a2b247cdacacf1e10b9, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < b879565effd88fc119c2efea3f3868a9997ed9ba, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < e54de654423bee98d1ba50379b09daf97c7854a6, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 5481766125041e71662f2e32ee0e91ad5f4d07f4, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 5efb3350230fef831167740e69e6db2861101186, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ≤ v < 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a, 2.6.12 | 55e66d84b5272c425b324a2b247cdacacf1e10b9, b879565effd88fc119c2efea3f3868a9997ed9ba, e54de654423bee98d1ba50379b09daf97c7854a6, 5481766125041e71662f2e32ee0e91ad5f4d07f4, 5efb3350230fef831167740e69e6db2861101186, 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a |
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