fs/ntfs3: terminate the cached volume label after UTF-8 conversion

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53023
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:13 UTC
Updated2026-07-15 13:56:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: terminate the cached volume label after UTF-8 conversion ntfs_fill_super() loads the on-disk volume label with utf16s_to_utf8s() and stores the result in sbi->volume.label. The converted label is later exposed through ntfs3_label_show() using %s, but utf16s_to_utf8s() only returns the number of bytes written and does not add a trailing NUL. If the converted label fills the entire fixed buffer, ntfs3_label_show() can read past the end of sbi->volume.label while looking for a terminator. Terminate the cached label explicitly after a successful conversion and clamp the exact-full case to the last byte of the buffer.

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: 0.001720000 probability, percentile 0.068450000 (date 2026-07-13)

Problem Types: NVD-CWE-noinfo

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 82cae269cfa953032fbb8980a7d554d60fb00b17 32b0686369e0afbb3549a0d93e2d8517da84cd30 git Not specified
CNA Linux Linux affected 82cae269cfa953032fbb8980a7d554d60fb00b17 bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed git Not specified
CNA Linux Linux affected 82cae269cfa953032fbb8980a7d554d60fb00b17 0b11fcbe80a59acdf58337d80ebb5f72201d73d6 git Not specified
CNA Linux Linux affected 82cae269cfa953032fbb8980a7d554d60fb00b17 54d564b762389679e2f8fb9eeb20af7e82371e1c git Not specified
CNA Linux Linux affected 82cae269cfa953032fbb8980a7d554d60fb00b17 6136bbb054f7ab9f51ae99915541633b18bcef90 git Not specified
CNA Linux Linux affected 82cae269cfa953032fbb8980a7d554d60fb00b17 5cd0707b81cb4589f00aec5c4c1288bd0980d2a4 git Not specified
CNA Linux Linux affected 82cae269cfa953032fbb8980a7d554d60fb00b17 a6cd43fe9b083fa23fe1595666d5738856cb261a git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.141 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.91 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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