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CVE-2026-53296mailbox: mailbox-test: free channels on probe error
- 7.8HighCVSS base score
- 0.18%Exploitation in 30 daysEPSS · top 93% 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: mailbox: mailbox-test: free channels on probe error On probe error, free the previously obtained channels. This not only prevents a leak, but also UAF scenarios because the client structure will be removed nonetheless because it was allocated with devm.
Timeline
ID reserved
By Linux
- 17 days later
· 17 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 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 15c4cc3850cfe1b973eb7b63c02314b267f06a64
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 187069ccc3474516af32350e20d7e449160fa6de
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 81c9e7e4030e71391ab479c4c6e17b64802577aa
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 742001919653e7313b4e91780c5d108be1692365
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < 02beb178e2e159daeb8f992d7abb16a37da31664
- affected 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 – < c02053a9055d5fdfd32432287cca8958db1d5bc5
- affected 4.4
- unaffected < 4.4
- unaffected 5.10.258 – ≤ 5.10.*
- unaffected 5.15.209 – ≤ 5.15.*
- unaffected 6.1.175 – ≤ 6.1.*
- unaffected 6.6.141 – ≤ 6.6.*
- unaffected 6.12.91 – ≤ 6.12.*
- unaffected 6.18.33 – ≤ 6.18.*
- unaffected 7.0.10 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References8
- https://git.kernel.org/stable/c/0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b (opens in a new tab)
- https://git.kernel.org/stable/c/15c4cc3850cfe1b973eb7b63c02314b267f06a64 (opens in a new tab)
- https://git.kernel.org/stable/c/187069ccc3474516af32350e20d7e449160fa6de (opens in a new tab)
- https://git.kernel.org/stable/c/81c9e7e4030e71391ab479c4c6e17b64802577aa (opens in a new tab)
- https://git.kernel.org/stable/c/6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 (opens in a new tab)
- https://git.kernel.org/stable/c/742001919653e7313b4e91780c5d108be1692365 (opens in a new tab)
- https://git.kernel.org/stable/c/02beb178e2e159daeb8f992d7abb16a37da31664 (opens in a new tab)
- https://git.kernel.org/stable/c/c02053a9055d5fdfd32432287cca8958db1d5bc5 (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-2026-39901 (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-2026-53296)Record last updated .