CVE-2026-89840f2fs: validate MOVE_RANGE destination size
- 7.1HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% 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: f2fs: validate MOVE_RANGE destination size F2FS_IOC_MOVE_RANGE checks the source range, but not the destination end before updating i_size. A source hole can expose this: __clone_blkaddrs() skips NULL_ADDR entries and returns success, so the caller can still extend the destination inode with unchecked pos_out + len. Reject destination overflow and use inode_newsize_ok() before extending the destination inode.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 44 days later
· 44 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 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b – < 454de20a5a36c000b75f49337aae8c92045c5242
- affected 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b – < 54c587f3f95ce2d6932a16566db83f73cc4313e1
- affected 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b – < bca61ee5192ea47003722486ae9588a2a4bb47b6
- affected 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b – < db13064669526494cd78ba3a4394063b740e940c
- affected 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b – < dcae1eeda53149f219dd6af93b3083b7271c1c63
- affected 4dd6f977fc778e5a0da604e5f8cb2f36d163d27b – < e533889fc26aea0cd83c90327063f272061dd820
- affected 4.8
- unaffected < 4.8
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2.5 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/454de20a5a36c000b75f49337aae8c92045c5242 (opens in a new tab)
- https://git.kernel.org/stable/c/54c587f3f95ce2d6932a16566db83f73cc4313e1 (opens in a new tab)
- https://git.kernel.org/stable/c/bca61ee5192ea47003722486ae9588a2a4bb47b6 (opens in a new tab)
- https://git.kernel.org/stable/c/db13064669526494cd78ba3a4394063b740e940c (opens in a new tab)
- https://git.kernel.org/stable/c/dcae1eeda53149f219dd6af93b3083b7271c1c63 (opens in a new tab)
- https://git.kernel.org/stable/c/e533889fc26aea0cd83c90327063f272061dd820 (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-2026-80440 (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-2026-89840)Record last updated .