What’s Vulnerable › Vulnerabilities

CVE-2026-31758: usb: usbtmc: Flush anchored URBs in usbtmc_release

• 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: 2026-05-01 · updated 2026-10-19
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: usb: usbtmc: Flush anchored URBs in usbtmc_release When calling usbtmc_release, pending anchored URBs must be flushed or killed to prevent use-after-free errors (e.g. in the HCD giveback path). Call usbtmc_draw_down() to allow anchored URBs to be completed.

Affected products

• Linux kernel: from 4.19 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.168; from 6.2 before 6.6.134; from 6.7 before 6.12.81; from 6.13 before 6.18.22 — fixed in 5.10.253, 5.15.203, 6.1.168, 6.12.81, 6.18.22, 6.19.12

How to fix

Upgrade to a fixed version: Linux kernel 5.10.253, 5.15.203, 6.1.168, 6.12.81. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/7fa8f61bab3fb75b5deba8a0f3abb74dc5068d9f
• https://git.kernel.org/stable/c/8a768552f7a8276fb9e01d49773d2094ace7c8f1
• https://git.kernel.org/stable/c/959ef329071136e4335b54822fe2f607659b4569
• https://git.kernel.org/stable/c/95e09b07e50290254b28b8395509473104518f8c
• https://git.kernel.org/stable/c/977b632db51d231dec0bc571089a5c2402674139
• https://git.kernel.org/stable/c/d13318dec0c1e0e2ac16f8ecbd522db14cea4bb1
• https://git.kernel.org/stable/c/d40198de50232e04c14c6e2092e896766c95ea48
• https://git.kernel.org/stable/c/e189d443767f7cd390c52f2e122e1fc41c7562d6

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