CVE-2026-64341USB: iowarrior: fix use-after-free on disconnect race
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 98% 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: USB: iowarrior: fix use-after-free on disconnect race mutex_unlock() may access the mutex structure after releasing the lock and therefore cannot be used to manage lifetime of objects directly (unlike spinlocks and refcounts). [1][2] Use a kref to release the driver data to avoid use-after-free in mutex_unlock() when release() races with disconnect(). [1] a51749ab34d9 ("locking/mutex: Document that mutex_unlock() is non-atomic") [2] 2b9d9e0a9ba0 ("locking/mutex: Clarify that mutex_unlock(), and most other sleeping locks, can still use the lock object after it's unlocked")
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 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 | 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)
- 0.13% · top 98% of all CVEs (14 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: High 7.8.
Affected products
- affected 946b960d13c15f050a3b848987aaca79f6a459b7 – < 9472acd56a020c93be4189d2dba9c743b9fc8039
- affected 946b960d13c15f050a3b848987aaca79f6a459b7 – < 4e7d3c98fed73d3be84d3e146d8d9be0309e725b
- affected 946b960d13c15f050a3b848987aaca79f6a459b7 – < 3c0a7b29ebb391d5f50b115e86f842b709195b08
- affected 946b960d13c15f050a3b848987aaca79f6a459b7 – < 30ec3025b771511625375fb3fb959aea3b45fb0d
- affected 946b960d13c15f050a3b848987aaca79f6a459b7 – < 71590982700fdeb39a37a500c877228b0140978e
- affected 946b960d13c15f050a3b848987aaca79f6a459b7 – < c602254ba4c10f60a73cd99d147874f86a3f485c
- affected 2.6.21
- unaffected < 2.6.21
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.58 – ≤ 6.18.*
- unaffected 7.1.4 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/9472acd56a020c93be4189d2dba9c743b9fc8039 (opens in a new tab)
- https://git.kernel.org/stable/c/4e7d3c98fed73d3be84d3e146d8d9be0309e725b (opens in a new tab)
- https://git.kernel.org/stable/c/3c0a7b29ebb391d5f50b115e86f842b709195b08 (opens in a new tab)
- https://git.kernel.org/stable/c/30ec3025b771511625375fb3fb959aea3b45fb0d (opens in a new tab)
- https://git.kernel.org/stable/c/71590982700fdeb39a37a500c877228b0140978e (opens in a new tab)
- https://git.kernel.org/stable/c/c602254ba4c10f60a73cd99d147874f86a3f485c (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-2026-48885 (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-2026-64341)Record last updated .