CVE-2026-23357can: mcp251x: fix deadlock in error path of mcp251x_open
- 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: can: mcp251x: fix deadlock in error path of mcp251x_open The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish. This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path. To solve this issue move the call to free_irq() after the lock is released. Setting `priv->force_quit = 1` beforehand ensure that the IRQ handler will exit right away once it acquired the lock.
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 8 months later
· 8 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 · 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)
- 0.11% · top 99% of all CVEs (13 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 bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < 739454057572cb0948658d1142f3fa2c6966465c
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < 416c18ecddafab0ed09be1e7b9d2f448f3d4db16
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < 256f0cff6e946c570392bda1d01a65e789a7afd0
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < b73832292cd914e87a55e863ba4413a907e7db6b
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < 38063cc435b69d56e76f947c10d336fcb2953508
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < d27f12c3f5e85efc479896af4a69eccb37f75e8e
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < e728f444c913a91d290d1824b4770780bbd6378e
- affected bf66f3736a945dd4e92d86427276c6eeab0a6c1d – < ab3f894de216f4a62adc3b57e9191888cbf26885
- affected 2.6.34
- unaffected < 2.6.34
- unaffected 5.10.253 – ≤ 5.10.*
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.167 – ≤ 6.1.*
- unaffected 6.6.130 – ≤ 6.6.*
- unaffected 6.12.77 – ≤ 6.12.*
- unaffected 6.18.17 – ≤ 6.18.*
- unaffected 6.19.7 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References9
- https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c (opens in a new tab)
- https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16 (opens in a new tab)
- https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0 (opens in a new tab)
- https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b (opens in a new tab)
- https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508 (opens in a new tab)
- https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e (opens in a new tab)
- https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e (opens in a new tab)
- https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885 (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.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-2026-15332 (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-2026-23357)Record last updated .