{"id":"CVE-2026-80684","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Fix NULL dereference on AIBV allocation failure\n\nThe airq_iv_create() can return NULL on failure, but the return value was\nnever checked","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Fix NULL dereference on AIBV allocation failure\n\nThe airq_iv_create() can return NULL on failure, but the return value was\nnever checked. If it fails, z…","severity":"critical","cvss":9.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-476"],"vendor":"Linux","product":"Linux","affected":["Linux >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc < 96099486b63985801c9c6ef22505e9aa635b2d20","Linux >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc < 0a95abe964400771ad82b027d7b84a0d183cd0db","Linux >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc < df947d85e164a50a29d43a96e814f69ab1d0f7ed","Linux >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc < e137d082325bbcae780087b57501d38585e625d9","Linux >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc < d1a103dc9016c25e7423ce5841a5cc2df76d59f3","Linux >= 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc < 8bf09b9b7d3232806df95f409581f8a9fd99a3fa","Linux 6.0"],"published":"2026-08-28","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:18:06.443","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80684","references":[{"url":"https://git.kernel.org/stable/c/0a95abe964400771ad82b027d7b84a0d183cd0db","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8bf09b9b7d3232806df95f409581f8a9fd99a3fa","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/96099486b63985801c9c6ef22505e9aa635b2d20","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d1a103dc9016c25e7423ce5841a5cc2df76d59f3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/df947d85e164a50a29d43a96e814f69ab1d0f7ed","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e137d082325bbcae780087b57501d38585e625d9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80684.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80684"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2525395"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80684"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80684"},{"url":"https://lore.kernel.org/linux-cve-announce/2026082802-CVE-2026-80684-a2a8@gregkh/T"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00196,"epssPercentile":0.09185,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:19:58.006717Z"},"scores":{"nvd":9.3,"vendor":5.5},"ingestedAt":"2026-08-30T04:47:10.646Z","slug":"CVE-2026-80684","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Fix NULL dereference on AIBV allocation failure\n\nThe airq_iv_create() can return NULL on failure, but the return value was\nnever checked. If it fails, zdev->aibv will be NULL and fail when\ndereferenced in kvm_zpci_set_airq(). Add a NULL check and free the\npreviously allocated AISB bit and zdev->aisb on failure.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80684.json)","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":51.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}