thunderbolt: Bound root directory content to block size

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Summary

CVECVE-2026-53149
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-25 09:16:32 UTC
Updated2026-07-06 17:51:40 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: thunderbolt: Bound root directory content to block size __tb_property_parse_dir() does not check that content_offset + content_len fits within block_len for the root directory case. When rootdir->length equals or exceeds block_len - 2, the entry loop reads past the allocated property block. Add a bounds check after computing content_offset and content_len to reject directories whose content extends past the block.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

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

EPSS: 0.001760000 probability, percentile 0.073650000 (date 2026-07-04)

Problem Types: CWE-125

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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 cdae7c07e3e3509eaabc18c1640a55dc5b99c179 5c7657d38d07268124782f03519f07c22a5814fb git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 b212bc161d8a9937b42153723a4a3f2f74fab528 git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 1912be23daf4afc8d24ce916021ab68ca4c679db git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 4d0b1524caadb04c10a71f3f88692c63dcb39115 git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 0a32040a48db8cf35de48b85d6115df5623e4964 git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 60ba6217460792356a238299edd675d91d46bab4 git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 cbeb68cbaa0a6f979ef428a7f2d0268c082ba166 git Not specified
CNA Linux Linux affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 65423079c7420e3dbf9a7aa345c243a3f5752e5d git Not specified
CNA Linux Linux affected 4.15 Not specified
CNA Linux Linux unaffected 4.15 semver Not specified
CNA Linux Linux unaffected 5.10.259 5.10.* 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/0a32040a48db8cf35de48b85d6115df5623e4964 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/60ba6217460792356a238299edd675d91d46bab4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/65423079c7420e3dbf9a7aa345c243a3f5752e5d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4d0b1524caadb04c10a71f3f88692c63dcb39115 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b212bc161d8a9937b42153723a4a3f2f74fab528 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5c7657d38d07268124782f03519f07c22a5814fb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1912be23daf4afc8d24ce916021ab68ca4c679db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cbeb68cbaa0a6f979ef428a7f2d0268c082ba166 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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