CVE-2026-46074spi: ch341: fix memory leaks on probe failures
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% 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: spi: ch341: fix memory leaks on probe failures Make sure to deregister the controller, disable pins, and kill and free the RX URB on probe failures to mirror disconnect and avoid memory leaks and use-after-free. Also add an explicit URB kill on disconnect for symmetry (even if that is not strictly required as USB core would have stopped it in the current setup).
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 18 days later
· 18 days 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 · Undergoing Analysis | 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)
- 0.13% · top 97% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 8846739f52afa07e63395c80227dc544f54bd7b1 – < 5c6518633702d7f7b1153e9d8e042af847f11ef3
- affected 8846739f52afa07e63395c80227dc544f54bd7b1 – < ff8a7996dc8bf433efe2126ffdaee5b374a89e30
- affected 8846739f52afa07e63395c80227dc544f54bd7b1 – < 9bee2faf9e21c796d0d222c9d84a98f41bd303a0
- affected 8846739f52afa07e63395c80227dc544f54bd7b1 – < b99e3ddb91b499d920e63a2daff8880be68cfe9e
- affected 6.11
- unaffected < 6.11
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/5c6518633702d7f7b1153e9d8e042af847f11ef3 (opens in a new tab)
- https://git.kernel.org/stable/c/ff8a7996dc8bf433efe2126ffdaee5b374a89e30 (opens in a new tab)
- https://git.kernel.org/stable/c/9bee2faf9e21c796d0d222c9d84a98f41bd303a0 (opens in a new tab)
- https://git.kernel.org/stable/c/b99e3ddb91b499d920e63a2daff8880be68cfe9e (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-2026-32456 (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-2026-46074)Record last updated .