CVE-2026-31759
usb: ulpi: fix double free in ulpi_register_interface() error path
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().
INFO
Published Date :
May 1, 2026, 3:16 p.m.
Last Modified :
May 8, 2026, 6:20 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Ensure put_device handles cleanup.
- Avoid double freeing memory.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-31759.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31759 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-31759
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-31759 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31759 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
May. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-415 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.203 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.22 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.168 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.12 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.81 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.134 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.2 up to (excluding) 5.10.253 Added Reference Type kernel.org: https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 01, 2026
Action Type Old Value New Value Added 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(). Added Reference https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3 Added Reference https://git.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7 Added Reference https://git.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60 Added Reference https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795 Added Reference https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2 Added Reference https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15 Added Reference https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61 Added Reference https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df