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

Type: advisorySource: Official CVE List1 source record

In 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.

Announced Source revision 1
Original source ↗

CVE-2026-72289

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-72289

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "3893e1fcf6f306b327a8358dcd1cbd077989a240",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "cb3efe1a354f1638726725c3ecee1ce8d1a7e2dc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "da2d249a39a1881681c303ceea33f38ba1c5bbeb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "654be81c4c637af12709d47c7efc3302cd336513",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "e363c0bc0226dc5ea5046a88e9a6864b82c45399",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "79fdd2aa774e44847cd9bb7edc811e73e3dc7bfe",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "0658b09cba7fe866c6cd70cd2dcdfdcabe80328f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "0919e84c0fc1fc73525fdcedefab89ea8460f697",
        "lessThan": "0074b82cdfcb5fd13710a0ac308ade68ac6f6fbe",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "arch/arm64/kvm/vgic/vgic.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.261",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.212",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.178",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.145",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.97",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.40",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.5",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "arch/arm64/kvm/vgic/vgic.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-72289

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#33006 · Revision 1
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Publisher date
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