CVE-2025-21995drm/sched: Fix fence reference count leak
- 5.5MediumCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 88% 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: drm/sched: Fix fence reference count leak The last_scheduled fence leaks when an entity is being killed and adding the cleanup callback fails. Decrement the reference count of prev when dma_fence_add_callback() fails, ensuring proper balance. [phasta: add git tag info for stable kernel]
Timeline
ID reserved
By Linux
- 3 months later
· 3 months later
Published
- 13 months later
· 13 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 |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)
- 0.21% · top 88% 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: Medium 5.5.
Affected products
- affected 2fdb8a8f07c2f1353770a324fd19b8114e4329ac – < c76bd3c99293834de7d1dca5de536616d5655e38
- affected 2fdb8a8f07c2f1353770a324fd19b8114e4329ac – < 1135a9431160575466ea9ac37ebd756ecbe35fff
- affected 2fdb8a8f07c2f1353770a324fd19b8114e4329ac – < 35399c84dcedd6d31448fb9e1336ef52673f2882
- affected 2fdb8a8f07c2f1353770a324fd19b8114e4329ac – < a952f1ab696873be124e31ce5ef964d36bce817f
- affected 6.2
- unaffected < 6.2
- unaffected 6.6.85 – ≤ 6.6.*
- unaffected 6.12.21 – ≤ 6.12.*
- unaffected 6.13.9 – ≤ 6.13.*
- unaffected 6.14 – ≤ *
References
References4
- https://git.kernel.org/stable/c/c76bd3c99293834de7d1dca5de536616d5655e38 (opens in a new tab)
- https://git.kernel.org/stable/c/1135a9431160575466ea9ac37ebd756ecbe35fff (opens in a new tab)
- https://git.kernel.org/stable/c/35399c84dcedd6d31448fb9e1336ef52673f2882 (opens in a new tab)
- https://git.kernel.org/stable/c/a952f1ab696873be124e31ce5ef964d36bce817f (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-2025-9601 (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-2025-21995)Record last updated .