NVD Vulnerability Detail
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CVE-2026-31459
Summary

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure

Patch series "mm/damon/sysfs: fix memory leak and NULL dereference
issues", v4.

DAMON_SYSFS can leak memory under allocation failure, and do NULL pointer
dereference when a privileged user make wrong sequences of control. Fix
those.

This patch (of 3):

When damon_sysfs_new_test_ctx() fails in damon_sysfs_commit_input(),
param_ctx is leaked because the early return skips the cleanup at the out
label. Destroy param_ctx before returning.

Publication Date April 22, 2026, 11:16 p.m.
Registration Date April 25, 2026, 4:05 a.m.
Last Update April 24, 2026, 1:17 a.m.
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