{"id":"CVE-2026-98712","state":"PUBLISHED","title":"KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq\n\nReferencing the last interrupt inserted in an LR is rather fragile, as\nthis interrupt can vanish if a concurrently unmapped LPI.\n\nSolve this by bumping up the refcount on the interrupt when populating\nlast_lr_irq, and drop it at vgic_prune_ap_list() time, when LPIs are\nbeing reclaimed.","publishedAt":"2026-10-18T15:46:44.857Z","updatedAt":"2026-10-19T09:24:23.386Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6da5e537f5afe091658e846da1949d7e557d2ade","status":"affected","lessThan":"8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c","versionType":"git"},{"version":"6da5e537f5afe091658e846da1949d7e557d2ade","status":"affected","lessThan":"19bc5d79ece613f242b5ec03921a3b465321bfed","versionType":"git"},{"version":"cd28ca4c27ed5929f61bbed8a967c20519facb88","status":"affected","versionType":"git"},{"version":"6.19.9","status":"affected","lessThan":"6.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kvm/vgic/vgic.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kvm/vgic/vgic.c"]}],"references":["https://git.kernel.org/stable/c/8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c","https://git.kernel.org/stable/c/19bc5d79ece613f242b5ec03921a3b465321bfed"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98712.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98712","state":"PUBLISHED","datePublished":"2026-10-18T15:46:44.857Z","dateUpdated":"2026-10-19T09:24:23.386Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.365Z"},"containers":{"cna":{"title":"KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq\n\nReferencing the last interrupt inserted in an LR is rather fragile, as\nthis interrupt can vanish if a concurrently unmapped LPI.\n\nSolve this by bumping up the refcount on the interrupt when populating\nlast_lr_irq, and drop it at vgic_prune_ap_list() time, when LPIs are\nbeing reclaimed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6da5e537f5afe091658e846da1949d7e557d2ade","status":"affected","lessThan":"8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c","versionType":"git"},{"version":"6da5e537f5afe091658e846da1949d7e557d2ade","status":"affected","lessThan":"19bc5d79ece613f242b5ec03921a3b465321bfed","versionType":"git"},{"version":"cd28ca4c27ed5929f61bbed8a967c20519facb88","status":"affected","versionType":"git"},{"version":"6.19.9","status":"affected","lessThan":"6.20","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kvm/vgic/vgic.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kvm/vgic/vgic.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c"},{"url":"https://git.kernel.org/stable/c/19bc5d79ece613f242b5ec03921a3b465321bfed"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:24:23.386Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19.9"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}