CVE-2026-53261devlink: Release nested relation on devlink free
- 5.5MediumCVSS base score
- 0.11%Exploitation in 30 daysEPSS · top 99% 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: devlink: Release nested relation on devlink free devlink relation state is normally released from devl_unregister(), which calls devlink_rel_put(). This misses devlink instances that get a nested relation before registration and then fail probe before devl_register() is reached. That flow can happen for SFs. The child devlink gets linked to its parent before registration, then a later probe error calls devlink_free() directly. Since the instance was never registered, devl_unregister() is not called and devlink->rel is leaked. Release any pending relation from devlink_free() as well. The registered path is unchanged because devl_unregister() already clears devlink->rel before devlink_free() runs.
Timeline
ID reserved
By Linux
- 16 days later
· 16 days later
Published
- 4 months later
· 4 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 |
|---|---|---|---|
| NVDNVD · Analyzed | 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)
- 0.11% · top 99% 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 c137743bce02b18c1537d4681aa515f7b80bf0a8 – < a9137286884703113b1c9e6403bd6d7d97b14754
- affected c137743bce02b18c1537d4681aa515f7b80bf0a8 – < 927f96861f939c0b517d13ed27bf4fabbfc1cfb3
- affected c137743bce02b18c1537d4681aa515f7b80bf0a8 – < 11324d52b0c63f4f202b35793c6507a575e9a689
- affected c137743bce02b18c1537d4681aa515f7b80bf0a8 – < 3522b21fd7e1863d0734537737bd59f1b90d0190
- affected 6.7
- unaffected < 6.7
- unaffected 6.12.94 – ≤ 6.12.*
- unaffected 6.18.36 – ≤ 6.18.*
- unaffected 7.0.13 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754 (opens in a new tab)
- https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3 (opens in a new tab)
- https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689 (opens in a new tab)
- https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190 (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-2026-39212 (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-2026-53261)Record last updated .