CVE-2024-38580epoll: be better about file lifetimes
- 7.8HighCVSS base score
- 0.24%Exploitation in 30 daysEPSS · top 85% 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: epoll: be better about file lifetimes epoll can call out to vfs_poll() with a file pointer that may race with the last 'fput()'. That would make f_count go down to zero, and while the ep->mtx locking means that the resulting file pointer tear-down will be blocked until the poll returns, it means that f_count is already dead, and any use of it won't actually get a reference to the file any more: it's dead regardless. Make sure we have a valid ref on the file pointer before we call down to vfs_poll() from the epoll routines.
Timeline
ID reserved
By Linux
- 1 day later
· 1 day later
Published
- 2 years later
· 2 years 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 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.24% · top 85% of all CVEs (14 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 7.8.
Affected products
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < cbfd1088e24ec4c1199756a37cb8e4cd0a4b016e
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 559214eb4e5c3d05e69428af2fae2691ba1eb784
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 4f65f4defe4e23659275ce5153541cd4f76ce2d2
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 16e3182f6322575eb7c12e728ad3c7986a189d5d
- affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – < 4efaa5acf0a1d2b5947f98abb3acf8bfd966422b
- affected 2.6.12
- unaffected < 2.6.12
- unaffected 5.15.161 – ≤ 5.15.*
- unaffected 6.1.93 – ≤ 6.1.*
- unaffected 6.6.33 – ≤ 6.6.*
- unaffected 6.8.12 – ≤ 6.8.*
- unaffected 6.9 – ≤ *
References
References5
- https://git.kernel.org/stable/c/cbfd1088e24ec4c1199756a37cb8e4cd0a4b016e (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/559214eb4e5c3d05e69428af2fae2691ba1eb784 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/4f65f4defe4e23659275ce5153541cd4f76ce2d2 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/16e3182f6322575eb7c12e728ad3c7986a189d5d (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/4efaa5acf0a1d2b5947f98abb3acf8bfd966422b (opens in a new tab)x_transferred
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-2024-37443 (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-2024-38580)Record last updated .