CVE-2026-64341
Received Received - Intake

BaseFortify

Publication date: 2026-07-25

Last updated on: 2026-07-25

Assigner: kernel.org

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")

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Meta Information

Published
2026-07-25
Last Modified
2026-07-25
Generated
2026-07-25
AI Q&A
2026-07-25
EPSS Evaluated
N/A
NVD
CVE-2026-64341
EUVD
EUVD-2026-48885

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

Helpful Resources

Exploitability

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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a use-after-free issue in the iowarrior USB driver. It occurs when the driver's disconnect function races with the release function, leading to a mutex being unlocked after its memory has been freed. This happens because mutex_unlock() cannot safely manage object lifetimes like spinlocks or refcounts.

Impact Analysis

This vulnerability could allow an attacker with physical access to a system to trigger a use-after-free condition, potentially causing system crashes, data corruption, or privilege escalation. It primarily affects systems using the iowarrior USB driver.

Mitigation Strategies

Update the Linux kernel to the latest patched version to resolve the use-after-free issue in the iowarrior USB driver. Monitor kernel logs for iowarrior-related errors or crashes that may indicate exploitation attempts.

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