rxrpc, afs: Fix missing error pointer check after rxrpc_kernel_lookup_peer()

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Summary

CVECVE-2026-43463
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:59 UTC
Updated2026-05-20 18:39:59 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: rxrpc, afs: Fix missing error pointer check after rxrpc_kernel_lookup_peer() rxrpc_kernel_lookup_peer() can also return error pointers in addition to NULL, so just checking for NULL is not sufficient. Fix this by: (1) Changing rxrpc_kernel_lookup_peer() to return -ENOMEM rather than NULL on allocation failure. (2) Making the callers in afs use IS_ERR() and PTR_ERR() to pass on the error code returned.

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 0.041320000 (date 2026-05-12)

Problem Types: CWE-476

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 72904d7b9bfbf2dd146254edea93958bc35bbbfe d55fa7cd4b19ba91b34b307d769c149e56ad0a75 git Not specified
CNA Linux Linux affected 72904d7b9bfbf2dd146254edea93958bc35bbbfe 54331c5dcc6d97683d7ca2788e7ef9c9505e1477 git Not specified
CNA Linux Linux affected 72904d7b9bfbf2dd146254edea93958bc35bbbfe 4245a79003adf30e67f8e9060915bd05cb31d142 git Not specified
CNA Linux Linux affected 056fc740be000d39a7dba700a935f3bbfbc664e6 git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d55fa7cd4b19ba91b34b307d769c149e56ad0a75 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/54331c5dcc6d97683d7ca2788e7ef9c9505e1477 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4245a79003adf30e67f8e9060915bd05cb31d142 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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