What’s Vulnerable › Vulnerabilities

CVE-2026-97483: usb: core: hcd: fix possible deadlock in rh control transfers

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-10-03

Description

In the Linux kernel, the following vulnerability has been resolved: usb: core: hcd: fix possible deadlock in rh control transfers >From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doing the reset itself relies on VM magic. However, that is insufficient, as resetting a device involves resuming it. Resumption as well as resetting involves conrol transfers to the parent of the device to be reset. That may be a root hub. Hence usbcore must heed the flags passed to usb_submit_urb() processing control transfers to root hubs. The problem exist since the storage driver has been merged.

Affected products

• Linux kernel: 3.12 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/549672a3fb6b36ea408238f89ecf9f41d2da6225
• https://git.kernel.org/stable/c/8461eda5af77c44d216cec66455bd5b01ee35c9a
• https://git.kernel.org/stable/c/8f82fc3d72e5feb7a1efae94b51b431c5bf41c86
• https://git.kernel.org/stable/c/936b08d87c667031725bcc753007e7c1182548c6
• https://git.kernel.org/stable/c/d0291fb4d91982d9f6a680bf759ff0555d351ecb
• https://git.kernel.org/stable/c/d5559f43d76b398392b26a15cbc16d731969cd1c
• https://git.kernel.org/stable/c/fff917c85d37a294397c5440a795591ca9d6b602

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