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Vulnerability · Published Aug 28, 2026 · Assigned by Linux

CVE-2026-80684KVM: s390: pci: Fix NULL dereference on AIBV allocation failure

Critical 9.3

In plain English

A critical-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)0.1%top 96.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix NULL dereference on AIBV allocation failure The airq_iv_create() can return NULL on failure, but the return value was never checked. If it fails, zdev->aibv will be NULL and fail when dereferenced in kvm_zpci_set_airq(). Add a NULL check and free the previously allocated AISB bit and zdev->aisb on failure.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.187-1DEBIAN-CVE-2026-80684
Debian:13linux6.12.105-1DEBIAN-CVE-2026-80684
Debian:14linux7.1.8-1DEBIAN-CVE-2026-80684
Debian:12linux-6.126.12.107-1~deb12u1DEBIAN-CVE-2026-80684
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1038.42UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-80684
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-80684
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-80684
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-80684

Affected products (as reported)

VendorProductVersions
Linux Linux 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc – before 96099486b63985801c9c6ef22505e9aa635b2d203c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc – before 0a95abe964400771ad82b027d7b84a0d183cd0db3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc – before df947d85e164a50a29d43a96e814f69ab1d0f7ed3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc – before e137d082325bbcae780087b57501d38585e625d93c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc – before d1a103dc9016c25e7423ce5841a5cc2df76d59f33c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc – before 8bf09b9b7d3232806df95f409581f8a9fd99a3fa
Linux Linux 6.0

References