LoongArch: KVM: Validate irqchip index in irqfd routing

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Summary

CVECVE-2026-72295
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:02 UTC
Updated2026-08-17 06:18:32 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Validate irqchip index in irqfd routing Sashiko reported that the irqchip index is not validated for LoongArch. Add validation and reject out-of-range irqchip indexes to avoid indexing past the routing table's chip array.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001610000 probability, percentile 0.058420000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1928254c5ccb7bdffd7f0334e1ce250e9ce4de94 199b570d7fca1aa70e596f10a6276997becffb6d git Not specified
CNA Linux Linux affected 1928254c5ccb7bdffd7f0334e1ce250e9ce4de94 8b3e188d19e4ffe916780aeb7ddad9d6457b8bcc git Not specified
CNA Linux Linux affected 1928254c5ccb7bdffd7f0334e1ce250e9ce4de94 3474037904c20ff915e3ebab0ab5c1e41bbe549e git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/8b3e188d19e4ffe916780aeb7ddad9d6457b8bcc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/199b570d7fca1aa70e596f10a6276997becffb6d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3474037904c20ff915e3ebab0ab5c1e41bbe549e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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