CVE-2026-31759
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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().
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-415
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.