CVE-2026-89601ext2: Fix lost inode updates for IS_SYNC inodes
- 8.8HighCVSS base score
- 0.55%Exploitation in 30 daysEPSS · top 54% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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().
Timeline
ID reserved
By Linux
Published
- 49 days later
· 49 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.55% · top 54% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 55e66d84b5272c425b324a2b247cdacacf1e10b9
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < b879565effd88fc119c2efea3f3868a9997ed9ba
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < e54de654423bee98d1ba50379b09daf97c7854a6
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 5481766125041e71662f2e32ee0e91ad5f4d07f4
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 5efb3350230fef831167740e69e6db2861101186
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/55e66d84b5272c425b324a2b247cdacacf1e10b9 (opens in a new tab)
- https://git.kernel.org/stable/c/b879565effd88fc119c2efea3f3868a9997ed9ba (opens in a new tab)
- https://git.kernel.org/stable/c/e54de654423bee98d1ba50379b09daf97c7854a6 (opens in a new tab)
- https://git.kernel.org/stable/c/5481766125041e71662f2e32ee0e91ad5f4d07f4 (opens in a new tab)
- https://git.kernel.org/stable/c/5efb3350230fef831167740e69e6db2861101186 (opens in a new tab)
- https://git.kernel.org/stable/c/356984d1a5c32e94810cbb6c8dc7d8ff2d4d919a (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-76513 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89601)Record last updated .