{"id":"CVE-2026-98712","title":"KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq","summary":"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…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 6da5e537f5afe091658e846da1949d7e557d2ade < 8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c","Linux >= 6da5e537f5afe091658e846da1949d7e557d2ade < 19bc5d79ece613f242b5ec03921a3b465321bfed","Linux cd28ca4c27ed5929f61bbed8a967c20519facb88","Linux >= 6.19.9 < 6.20","Linux 7.0"],"published":"2026-10-18","updated":"2026-10-19","sourceUpdated":"2026-10-19T09:24:23.386Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98712","references":[{"url":"https://git.kernel.org/stable/c/8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c"},{"url":"https://git.kernel.org/stable/c/19bc5d79ece613f242b5ec03921a3b465321bfed"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T16:47:32.511Z","slug":"CVE-2026-98712","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `Linux >= 6da5e537f5afe091658e846da1949d7e557d2ade < 8b25393d16a5ca8df907bd7ee1ff2e9d85678b3c`\n- `Linux >= 6da5e537f5afe091658e846da1949d7e557d2ade < 19bc5d79ece613f242b5ec03921a3b465321bfed`\n- `Linux cd28ca4c27ed5929f61bbed8a967c20519facb88`\n- `Linux >= 6.19.9 < 6.20`\n- `Linux 7.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}