KVM: arm64: vgic: Check the interrupt is still ours before migrating it

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72289
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:00 UTC
Updated2026-08-17 06:18:31 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Check the interrupt is still ours before migrating it vgic_prune_ap_list() drops both ap_list_lock and irq_lock while migrating an interrupt to another vCPU. After reacquiring the locks it only checks that the affinity is unchanged (target_vcpu == vgic_target_oracle(irq)) before moving the interrupt, which assumes that an interrupt whose affinity is preserved is still queued on this vCPU's ap_list. That assumption no longer holds if the interrupt is taken off the ap_list while the locks are dropped. vgic_flush_pending_lpis() removes the interrupt from the list and sets irq->vcpu to NULL, but leaves enabled/pending/target_vcpu untouched. As the interrupt is still enabled and pending, vgic_target_oracle() returns the same target_vcpu, so the affinity check passes and list_del() is run a second time on an entry that has already been removed. Also check that the interrupt is still assigned to this vCPU (irq->vcpu == vcpu) before moving it.

Risk And Classification

Primary CVSS: v3.1 9.3 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001820000 probability, percentile 0.081080000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.3CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED9.3CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 3893e1fcf6f306b327a8358dcd1cbd077989a240 git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 da2d249a39a1881681c303ceea33f38ba1c5bbeb git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 654be81c4c637af12709d47c7efc3302cd336513 git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 e363c0bc0226dc5ea5046a88e9a6864b82c45399 git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 0658b09cba7fe866c6cd70cd2dcdfdcabe80328f git Not specified
CNA Linux Linux affected 0919e84c0fc1fc73525fdcedefab89ea8460f697 0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe git Not specified
CNA Linux Linux affected 4.7 Not specified
CNA Linux Linux unaffected 4.7 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* 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/da2d249a39a1881681c303ceea33f38ba1c5bbeb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3893e1fcf6f306b327a8358dcd1cbd077989a240 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/654be81c4c637af12709d47c7efc3302cd336513 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0658b09cba7fe866c6cd70cd2dcdfdcabe80328f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e363c0bc0226dc5ea5046a88e9a6864b82c45399 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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