High 7.8Published May 1, 2026

CVE-2026-31759usb: ulpi: fix double free in ulpi_register_interface() error path

Updated under an hour ago (Oct 27, 2026, 8:10 PM ET)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f builds before 2f70ba9dae13a190673cc3f9b4aad52179738f60; from 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f before ee248e6e941e4f2e634df2bd43e5f1ef810ab6df; 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f builds before 272a9b26c336a295e4e209157fed809706c1b1f7; from 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f before aaeae6533d77e6ed4def85baec01e2815ebbef61; from 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f before 8763f8317bb389aded32a32b08f6751cfff657d2; 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f builds before 38c28fe25611099230f0965c925499bfcf46a795; from 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f before a6e5461f076c2ef63159f18e5cdbd30b50f0bc15; 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f builds before 01af542392b5d41fd659d487015a71f627accce3	CNA record
linux linux_kernel linux:linux_kernel	from 4.2 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; from 6.19 before 6.19.12; 7.0; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60	patch
https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df	patch
https://git.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7	patch
https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61	patch
https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2	patch
https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795	patch
https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15	patch
https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.