rxrpc: Fix key parsing memleak

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Summary

CVECVE-2026-31643
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:43 UTC
Updated2026-04-27 20:19:26 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix key parsing memleak In rxrpc_preparse_xdr_yfs_rxgk(), the memory attached to token->rxgk can be leaked in a few error paths after it's allocated. Fix this by freeing it in the "reject_token:" case.

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: 0.000190000 probability, percentile 0.052150000 (date 2026-04-27)

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 0ca100ff4df64f5d0f6c1dd5080c3e096786bea6 d5f76f812d2c0ea6dd651b0586be49e85ecca085 git Not specified
CNA Linux Linux affected 0ca100ff4df64f5d0f6c1dd5080c3e096786bea6 01f51318feb626deee1d0c8a190198cd7857d599 git Not specified
CNA Linux Linux affected 0ca100ff4df64f5d0f6c1dd5080c3e096786bea6 b555912b9b21075e8298015f888ffe3ff60b1a97 git Not specified
CNA Linux Linux affected 6.16 Not specified
CNA Linux Linux unaffected 6.16 semver Not specified
CNA Linux Linux unaffected 6.18.23 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.13 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/b555912b9b21075e8298015f888ffe3ff60b1a97 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/01f51318feb626deee1d0c8a190198cd7857d599 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d5f76f812d2c0ea6dd651b0586be49e85ecca085 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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