CVE-2026-52905

In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: disallow non-power of two min_region_sz on damon_start() Commit d8f867fa0825 ("mm/damon: add damon_ctx->min_sz_region") introduced a bug that allows unaligned DAMON region address ranges. Commit c80f46ac228b ("mm/damon/core: disallow non-power of two min_region_sz") fixed it, but only for damon_commit_ctx() use case. Still, DAMON sysfs interface can emit non-power of two min_region_sz via damon_start(). Fix the path by adding the is_power_of_2() check on damon_start(). The issue was discovered by sashiko [1].

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/1de2db19a6028abe7d905875922faef5b873de67	Patch
https://git.kernel.org/stable/c/89b6226b6c2a4add3939f361653a47c212d6ab75	Patch
https://git.kernel.org/stable/c/95093e5cb4c5b50a5b1a4b79f2942b62744bd66a	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-06-09 14:16

Updated : 2026-07-23 08:10

NVD link : CVE-2026-52905

Mitre link : CVE-2026-52905

CVE.ORG link : CVE-2026-52905

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

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