CVE-2026-31522
HID: magicmouse: avoid memory leak in magicmouse_report_fixup()
Description
In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: avoid memory leak in magicmouse_report_fixup() The magicmouse_report_fixup() function was returning a newly kmemdup()-allocated buffer, but never freeing it. The caller of report_fixup() does not take ownership of the returned pointer, but it *is* permitted to return a sub-portion of the input rdesc, whose lifetime is managed by the caller.
INFO
Published Date :
April 22, 2026, 2:16 p.m.
Last Modified :
April 22, 2026, 2:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the kernel patch to fix the memory leak.
- Ensure allocated buffers are properly freed.
- Update the Linux kernel to the latest secure 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-2026-31522.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31522 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-2026-31522
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-31522 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31522 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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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 22, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: avoid memory leak in magicmouse_report_fixup() The magicmouse_report_fixup() function was returning a newly kmemdup()-allocated buffer, but never freeing it. The caller of report_fixup() does not take ownership of the returned pointer, but it *is* permitted to return a sub-portion of the input rdesc, whose lifetime is managed by the caller. Added Reference https://git.kernel.org/stable/c/136f605e246b4bfe7ac2259471d1ff814aed0084 Added Reference https://git.kernel.org/stable/c/579c4c9857acdc8380fa99803f355f878bd766cb Added Reference https://git.kernel.org/stable/c/79e5dcc95d9abed6f8203cfd529f4ec71f0e505d Added Reference https://git.kernel.org/stable/c/7edfe4346b052b708645d0acc0f186425766b785 Added Reference https://git.kernel.org/stable/c/91e8c6e601bdc1ccdf886479b6513c01c7e51c2c Added Reference https://git.kernel.org/stable/c/d84c21aabaab517b9aaf9bc1d785922cb9db2f31 Added Reference https://git.kernel.org/stable/c/fa95b0146358b49f9858139b67314591fd5871b0