CVE-2026-31459

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/7fe000eb32904758a85e62f6ea9483f89d5dabfc	Patch
https://git.kernel.org/stable/c/e9de9f3ce06b133a348006668bc8d25c6e504867	Patch
https://git.kernel.org/stable/c/f76f0a964bc3d7b7e253b43c669c41356bc54e71	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	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::::::

History

No history.

Information

Published : 2026-04-22 14:16

Updated : 2026-06-17 10:33

NVD link : CVE-2026-31459

Mitre link : CVE-2026-31459

CVE.ORG link : CVE-2026-31459

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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