regmap: maple: free entry on mas_store_gfp() failure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-23260
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-18 18:16:24 UTC
Updated2026-05-29 18:53:10 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: regmap: maple: free entry on mas_store_gfp() failure regcache_maple_write() allocates a new block ('entry') to merge adjacent ranges and then stores it with mas_store_gfp(). When mas_store_gfp() fails, the new 'entry' remains allocated and is never freed, leaking memory. Free 'entry' on the failure path; on success continue freeing the replaced neighbor blocks ('lower', 'upper').

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-401

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected f033c26de5a5734625d2dd1dc196745fae186f1b d61171cf097156030142643942c217759a9cc806 git Not specified
CNA Linux Linux affected f033c26de5a5734625d2dd1dc196745fae186f1b 811b45e2d795d955bb7fd9c816b40036f4fde350 git Not specified
CNA Linux Linux affected f033c26de5a5734625d2dd1dc196745fae186f1b f08f2d2907675926ac5657b25f86d921f269602a git Not specified
CNA Linux Linux affected f033c26de5a5734625d2dd1dc196745fae186f1b f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8 git Not specified
CNA Linux Linux affected 6.4 Not specified
CNA Linux Linux unaffected 6.4 semver Not specified
CNA Linux Linux unaffected 6.6.124 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.70 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.10 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f08f2d2907675926ac5657b25f86d921f269602a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/811b45e2d795d955bb7fd9c816b40036f4fde350 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f3f380ce6b3d5c9805c7e0b3d5bc28d9ec41e2e8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d61171cf097156030142643942c217759a9cc806 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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