CVE-2026-46109
usb: ulpi: fix memory leak on ulpi_register() error paths
Description
In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix memory leak on ulpi_register() error paths Commit 01af542392b5 ("usb: ulpi: fix double free in ulpi_register_interface() error path") removed kfree(ulpi) from ulpi_register_interface() to fix a double-free when device_register() fails. But when ulpi_of_register() or ulpi_read_id() fail before device_register() is called, the ulpi allocation is leaked. Add kfree(ulpi) on both error paths to properly clean up the allocation.
INFO
Published Date :
May 28, 2026, 10:16 a.m.
Last Modified :
June 1, 2026, 5:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch to fix memory leaks.
- Ensure all error paths clean up allocations.
- Update the Linux kernel to the latest version.
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-2026-46109.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-46109 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-2026-46109
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-2026-46109 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-46109 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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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 01, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0c2c0c6820fe96fa4be0a0499f8d3f3321b9af6c Added Reference https://git.kernel.org/stable/c/7bd61ed0bf9f4f1f2673d489b3bda1555b48d054 Added Reference https://git.kernel.org/stable/c/f1b855c00988a9cb41134cab7cf9faedba775dd9 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: fix memory leak on ulpi_register() error paths Commit 01af542392b5 ("usb: ulpi: fix double free in ulpi_register_interface() error path") removed kfree(ulpi) from ulpi_register_interface() to fix a double-free when device_register() fails. But when ulpi_of_register() or ulpi_read_id() fail before device_register() is called, the ulpi allocation is leaked. Add kfree(ulpi) on both error paths to properly clean up the allocation. Added Reference https://git.kernel.org/stable/c/0b9fcab1b8608d429e5f239afb197de928d4de7d Added Reference https://git.kernel.org/stable/c/2a71e01b2cf9b4329ff67102c1bea7448c2a2d2d Added Reference https://git.kernel.org/stable/c/b0c0d44adb55c66663886cb6e30ee92cbb0f5385 Added Reference https://git.kernel.org/stable/c/be2c1d825f54277472c87019e82013ac534ddc4c Added Reference https://git.kernel.org/stable/c/f30ccfc2985590b33a23a3d8bed7ca16c0af551b