CVE-2026-31459 (GCVE-0-2026-31459)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-05-23 16:05
VLAI
Title
mm/damon/sysfs: fix param_ctx leak on damon_sysfs_new_test_ctx() failure
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f , < e9de9f3ce06b133a348006668bc8d25c6e504867 (git)
Affected: f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f , < f76f0a964bc3d7b7e253b43c669c41356bc54e71 (git)
Affected: f0c5118ebb0eb7e4fd6f0d2ace3315ca141b317f , < 7fe000eb32904758a85e62f6ea9483f89d5dabfc (git)
Affected: 5b3609d9b9650bdea0bfdf643e0ce57e1aed67fc (git)
Affected: 6.17.6 , < 6.18 (semver)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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}



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