CVE-2026-31759

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix double free in ulpi_register_interface() error path When device_register() fails, ulpi_register() calls put_device() on ulpi->dev. The device release callback ulpi_dev_release() drops the OF node reference and frees ulpi, but the current error path in ulpi_register_interface() then calls kfree(ulpi) again, causing a double free. Let put_device() handle the cleanup through ulpi_dev_release() and avoid freeing ulpi again in ulpi_register_interface().

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3Patch
• https://git.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7Patch
• https://git.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60Patch
• https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795Patch
• https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2Patch
• https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15Patch
• https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61Patch
• https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6dfPatch