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CVE-2026-64342: USB: iowarrior: fix use-after-free on disconnect

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-25 · updated 2026-09-03
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: USB: iowarrior: fix use-after-free on disconnect Submitted write URBs are not stopped on close() and therefore need to be stopped unconditionally on disconnect() to avoid use-after-free in the completion handler.

Affected products

• Linux kernel: from 2.6.21.1 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39 — fixed in 5.10.261, 5.15.212, 6.1.178, 6.12.96, 6.18.39, 6.6.145

How to fix

Upgrade to a fixed version: Linux kernel 5.10.261, 5.15.212, 6.1.178, 6.12.96. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/164398601a7f160bc3df1efa454f983302cef03f
• https://git.kernel.org/stable/c/97ad9337127be04ca0b027c2b01e69302353f404
• https://git.kernel.org/stable/c/a7bbe946ca3a6eeb6f364d5e84b05e02c7c0d595
• https://git.kernel.org/stable/c/b748f97aff339e7f08dca9cf38a05b980fb66fea
• https://git.kernel.org/stable/c/bc0e4f16c44e50daa0b1ea729934baa3b4815dee
• https://git.kernel.org/stable/c/d058d377291567b72aea33b017215cbfb383b0ad
• https://git.kernel.org/stable/c/e4596816984efc537e7c04c1af0c639394f967f7
• https://git.kernel.org/stable/c/f328b0e9a0dbd162f5db1b83026b689f2fea2241

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