ext4: fix memory leak in ext4_ext_shift_extents()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45948
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:11 UTC
Updated2026-06-16 02:35:36 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4_ext_shift_extents() In ext4_ext_shift_extents(), if the extent is NULL in the while loop, the function returns immediately without releasing the path obtained via ext4_find_extent(), leading to a memory leak. Fix this by jumping to the out label to ensure the path is properly released.

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: 0.000240000 probability, percentile 0.073320000 (date 2026-06-01)

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 a18ed359bdddcded4f97ff5e2f07793ff9336913 7e807cb8603b7664fa630a696cd891d9a03c248d git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 afc5e61e1a07b2b833bd72cbee36ecce9cd901e2 git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 1bce219ee5512cf179ba40cf114945a14a16e21f git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 4a79fde8db7eba7f1128d971ceba4e3c9ac84aec git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 2f4b1052246ca646bb17bfe0f53df2fdf9729b58 git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 12615ab4bfb69678e5d961b28bb70040299e51b1 git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 bd7b52557e4a3ccd7595fdb3a585f1257de57935 git Not specified
CNA Linux Linux affected a18ed359bdddcded4f97ff5e2f07793ff9336913 ca81109d4a8f192dc1cbad4a1ee25246363c2833 git Not specified
CNA Linux Linux affected 3.15 Not specified
CNA Linux Linux unaffected 3.15 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.14 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.4 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ca81109d4a8f192dc1cbad4a1ee25246363c2833 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/7e807cb8603b7664fa630a696cd891d9a03c248d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4a79fde8db7eba7f1128d971ceba4e3c9ac84aec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2f4b1052246ca646bb17bfe0f53df2fdf9729b58 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1bce219ee5512cf179ba40cf114945a14a16e21f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/12615ab4bfb69678e5d961b28bb70040299e51b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/afc5e61e1a07b2b833bd72cbee36ecce9cd901e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/bd7b52557e4a3ccd7595fdb3a585f1257de57935 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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