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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.

PUBLISHED Reserved 2026-03-09 | Published 2026-04-22 | Updated 2026-04-22 | Assigner Linux

Product status

Default status
unaffected

f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f (git) before e9de9f3ce06b133a348006668bc8d25c6e504867
affected

f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f (git) before f76f0a964bc3d7b7e253b43c669c41356bc54e71
affected

f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f (git) before 7fe000eb32904758a85e62f6ea9483f89d5dabfc
affected

5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc (git)
affected

Default status
affected

6.18
affected

Any version before 6.18
unaffected

6.18.21 (semver)
unaffected

6.19.11 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/e9de9f3ce06b133a348006668bc8d25c6e504867

git.kernel.org/...c/f76f0a964bc3d7b7e253b43c669c41356bc54e71

git.kernel.org/...c/7fe000eb32904758a85e62f6ea9483f89d5dabfc

cve.org (CVE-2026-31459)

nvd.nist.gov (CVE-2026-31459)

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