- 7.1HighCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% 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: Require FMODE_WRITE for atomic write ioctls The F2FS ioctls for starting and committing atomic writes check for inode_owner_or_capable(), but this does not give LSMs like SELinux or Landlock an opportunity to deny the write access - if the caller's FSUID matches the inode's UID, inode_owner_or_capable() immediately returns true. There are scenarios where LSMs want to deny a process the ability to write particular files, even files that the FSUID of the process owns; but this can currently partially be bypassed using atomic write ioctls in two ways: - F2FS_IOC_START_ATOMIC_REPLACE + F2FS_IOC_COMMIT_ATOMIC_WRITE can truncate an inode to size 0 - F2FS_IOC_START_ATOMIC_WRITE + F2FS_IOC_ABORT_ATOMIC_WRITE can revert changes another process concurrently made to a file Fix it by requiring FMODE_WRITE for these operations, just like for F2FS_IOC_MOVE_RANGE. Since any legitimate caller should only be using these ioctls when intending to write into the file, that seems unlikely to break anything.
Timeline
ID reserved
By Linux
- 21 days later
· 21 days later
Published
- 22 months later
· 22 months 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 · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.
Affected products
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 700f3a7c7fa5764c9f24bbf7c78e0b6e479fa653
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 4ce87674c3a6b4d3b3d45f85b584ab8618a3cece
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 000bab8753ae29a259feb339b99ee759795a48ac
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 88ff021e1fea2d9b40b2d5efd9013c89f7be04ac
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 32f348ecc149e9ca70a1c424ae8fa9b6919d2713
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 5e0de753bfe87768ebe6744d869caa92f35e5731
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < f3bfac2cabf5333506b263bc0c8497c95302f32d
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 4583290898c13c2c2e5eb8773886d153c2c5121d
- affected 88b88a66797159949cec32eaab12b4968f6fae2d – < 4f5a100f87f32cb65d4bb1ad282a08c92f6f591e
- affected 3.18
- unaffected < 3.18
- unaffected 4.19.323 – ≤ 4.19.*
- unaffected 5.4.285 – ≤ 5.4.*
- unaffected 5.10.227 – ≤ 5.10.*
- unaffected 5.15.168 – ≤ 5.15.*
- unaffected 6.1.113 – ≤ 6.1.*
- unaffected 6.6.54 – ≤ 6.6.*
- unaffected 6.10.13 – ≤ 6.10.*
- unaffected 6.11.2 – ≤ 6.11.*
- unaffected 6.12 – ≤ *
References
References11
- https://git.kernel.org/stable/c/700f3a7c7fa5764c9f24bbf7c78e0b6e479fa653 (opens in a new tab)
- https://git.kernel.org/stable/c/4ce87674c3a6b4d3b3d45f85b584ab8618a3cece (opens in a new tab)
- https://git.kernel.org/stable/c/000bab8753ae29a259feb339b99ee759795a48ac (opens in a new tab)
- https://git.kernel.org/stable/c/88ff021e1fea2d9b40b2d5efd9013c89f7be04ac (opens in a new tab)
- https://git.kernel.org/stable/c/32f348ecc149e9ca70a1c424ae8fa9b6919d2713 (opens in a new tab)
- https://git.kernel.org/stable/c/5e0de753bfe87768ebe6744d869caa92f35e5731 (opens in a new tab)
- https://git.kernel.org/stable/c/f3bfac2cabf5333506b263bc0c8497c95302f32d (opens in a new tab)
- https://git.kernel.org/stable/c/4583290898c13c2c2e5eb8773886d153c2c5121d (opens in a new tab)
- https://git.kernel.org/stable/c/4f5a100f87f32cb65d4bb1ad282a08c92f6f591e (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html (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-2024-42657 (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-2024-47740)Record last updated .