riscv: kvm: fix vector context allocation leak

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Summary

CVECVE-2026-46171
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:32 UTC
Updated2026-06-11 12:19:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: riscv: kvm: fix vector context allocation leak When the second kzalloc (host_context.vector.datap) fails in kvm_riscv_vcpu_alloc_vector_context, the first allocation (guest_context.vector.datap) is leaked. Free it before returning.

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 0.042380000 (date 2026-06-02)

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 0f4b82579716b12bb88257bd7ea80f25c791fb2c bd62c0f61bc722a097417401030c596cea8e21aa git Not specified
CNA Linux Linux affected 0f4b82579716b12bb88257bd7ea80f25c791fb2c 1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98 git Not specified
CNA Linux Linux affected 0f4b82579716b12bb88257bd7ea80f25c791fb2c b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978 git Not specified
CNA Linux Linux affected 6.5 Not specified
CNA Linux Linux unaffected 6.5 semver Not specified
CNA Linux Linux unaffected 6.18.30 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.7 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/bd62c0f61bc722a097417401030c596cea8e21aa 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b7c958d7c1eb1cb9b2be7b5ee4129fcd66cec978 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1d57ab45ec5c0e22789de793bcf2a31ad6fb7d98 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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