drm/vc4: fix krealloc() memory leak

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53213
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 09:16:38 UTC
Updated2026-07-02 20:52:56 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/vc4: fix krealloc() memory leak Don't just overwrite the original pointer passed to krealloc() with its return value without checking latter: MEM = krealloc(MEM, SZ, GFP); If krealloc() returns NULL, that erases the pointer to the still allocated memory, hence leaks this memory. Instead, use a temporary variable, check it's not NULL and only then assign it to the original pointer: TMP = krealloc(MEM, SZ, GFP); if (!TMP) return; MEM = TMP; While on it, use krealloc_array().

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

EPSS: 0.001280000 probability, percentile 0.027890000 (date 2026-07-04)

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 6d45c81d229d71da54d374143e7d6abad4c0cf31 30165a09f76eaf34951c818eb5d9d6e4771d76f6 git Not specified
CNA Linux Linux affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f git Not specified
CNA Linux Linux affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e git Not specified
CNA Linux Linux affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27 git Not specified
CNA Linux Linux affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 02f5e4db57c0cdd7bac89d503b301a093a0fa95c git Not specified
CNA Linux Linux affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 4fc692dc6df5bc777cc1bcebf95179e28594875f git Not specified
CNA Linux Linux affected 6d45c81d229d71da54d374143e7d6abad4c0cf31 5d563a5da8717629ae72f9eadf1e0e340bd1658b git Not specified
CNA Linux Linux affected 4.8 Not specified
CNA Linux Linux unaffected 4.8 semver Not specified
CNA Linux Linux unaffected 5.15.210 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.176 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.143 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.94 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.36 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/e0ce103e89d61eef70edc1d1ae3bfd4c0aacbc2e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/30165a09f76eaf34951c818eb5d9d6e4771d76f6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/02f5e4db57c0cdd7bac89d503b301a093a0fa95c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c034aa0b1ba5f49cbdf8ef193d6ec714d74aac27 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5d563a5da8717629ae72f9eadf1e0e340bd1658b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fd87d6966041e33ef7d2e5dc59f9a52b71c6ae5f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4fc692dc6df5bc777cc1bcebf95179e28594875f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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