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Medium severity5.5NVD Advisory· Published Apr 22, 2026· Updated May 6, 2026

CVE-2026-31459

CVE-2026-31459

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

14
  • Linux/Kernel14 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 13 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.18.1,<6.18.21
    • cpe:2.3:o:linux:linux_kernel:6.17.6:*:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.18:-:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.18:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.18:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.18:rc5:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.18:rc6:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.18:rc7:*:*:*:*:*:*
    • 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:*:*:*:*:*:*
    • (no CPE)

Patches

Vulnerability mechanics

References

3

News mentions

0

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