ubifs: Fix memleak when insert_old_idx() failed

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-54050
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-24 13:16:06 UTC
Updated2026-08-04 10:19:26 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: ubifs: Fix memleak when insert_old_idx() failed Following process will cause a memleak for copied up znode: dirty_cow_znode zn = copy_znode(c, znode); err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) return ERR_PTR(err); // No one refers to zn. Fetch a reproducer in [Link]. Function copy_znode() is split into 2 parts: resource allocation and znode replacement, insert_old_idx() is split in similar way, so resource cleanup could be done in error handling path without corrupting metadata(mem & disk). It's okay that old index inserting is put behind of add_idx_dirt(), old index is used in layout_leb_in_gaps(), so the two processes do not depend on each other.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001750000 probability, percentile 0.072060000 (date 2026-08-06)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d cc29c7216d7f057eb0613b97dc38c7e1962a88d2 git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 6f2eee5457bc48b0426dedfd78cdbdea241a6edb git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 66e9f2fb3e753f820bec2a98e8c6387029988320 git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d ef9aac603659e9ffe7d69ae16e3f0fc0991a965b git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 79079cebbeed624b9d01cfcf1e3254ae1a1f6e14 git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d a6da0ab9847779e05a7416c7a98148b549de69ef git Not specified
CNA Linux Linux affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d b5fda08ef213352ac2df7447611eb4d383cce929 git Not specified
CNA Linux Linux affected 2.6.27 Not specified
CNA Linux Linux unaffected 2.6.27 semver Not specified
CNA Linux Linux unaffected 4.19.283 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.243 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.180 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.111 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.28 6.1.* semver Not specified
CNA Linux Linux unaffected 6.2.15 6.2.* semver Not specified
CNA Linux Linux unaffected 6.3.2 6.3.* semver Not specified
CNA Linux Linux unaffected 6.4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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