crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying

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Summary

CVECVE-2026-31543
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:28 UTC
Updated2026-04-28 18:46:51 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying When debug logging is enabled, read_key_from_user_keying() logs the first 8 bytes of the key payload and partially exposes the dm-crypt key. Stop logging any key bytes.

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: 0.000170000 probability, percentile 0.040590000 (date 2026-04-27)

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 479e58549b0fa7e80f1e0b9e69e0a2a8e6711132 4897bd307ba8757c31a3325ba6730961be606016 git Not specified
CNA Linux Linux affected 479e58549b0fa7e80f1e0b9e69e0a2a8e6711132 ed8d91f469845d62d44c565a55d2ab1767969357 git Not specified
CNA Linux Linux affected 479e58549b0fa7e80f1e0b9e69e0a2a8e6711132 36f46b0e36892eba08978eef7502ff3c94ddba77 git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/36f46b0e36892eba08978eef7502ff3c94ddba77 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4897bd307ba8757c31a3325ba6730961be606016 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ed8d91f469845d62d44c565a55d2ab1767969357 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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