Vulnerability · Published May 6, 2026 · Assigned by Linux

CVE-2026-43248vhost: move vdpa group bound check to vhost_vdpa

High 7.8

In plain English

A high-severity out-of-bounds write 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 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 94.3% 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: vhost: move vdpa group bound check to vhost_vdpa Remove duplication by consolidating these here. This reduces the posibility of a parent driver missing them. While we're at it, fix a bug in vdpa_sim where a valid ASID can be assigned to a group equal to ngroups, causing an out of bound write.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10kernel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-devel-matched6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-debug-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-devel-matched6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-64k-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-64k-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-abi-stablelists6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-abi-stablelists5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-cross-headers6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-cross-headers5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-devel-matched6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-debug-uki-virt6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-debug-uki-virt5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-devel-matched6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-doc6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-doc5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-headers6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-headers5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-modules-extra-matched6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:10kernel-rt6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-debug-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-64k-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-debug5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-debug-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-debug-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-debug-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-debug-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-rt-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-rt-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-tools6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-tools5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-tools-libs6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-tools-libs5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-tools-libs-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-tools-libs-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-uki-virt6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-uki-virt5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-uki-virt-addons6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-uki-virt-addons5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-devel6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump-devel5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-devel-matched6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-modules6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump-modules5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-modules-core6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10kernel-zfcpdump-modules-extra6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10libperf6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9libperf5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10perf6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9perf5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10python3-perf6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9python3-perf5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10rtla6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9rtla5.14.0-687.48.1.el9_8ALSA-2026:67470
AlmaLinux:10rv6.12.0-211.55.1.el10_2ALSA-2026:67471
AlmaLinux:9rv5.14.0-687.48.1.el9_8ALSA-2026:67470
Debian:12linuxno fix listedDEBIAN-CVE-2026-43248
Debian:13linux6.12.85-1DEBIAN-CVE-2026-43248
Debian:14linux6.19.6-1DEBIAN-CVE-2026-43248
Rocky Linux:10kernel0:6.12.0-211.55.1.el10_2RLSA-2026:67471
Rocky Linux:9kernel0:5.14.0-687.48.1.el9_8RLSA-2026:67470
Ubuntu:24.04:LTSlinux6.8.0-134.134UBUNTU-CVE-2026-43248
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-aws6.8.0-1060.63UBUNTU-CVE-2026-43248
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure6.8.0-1063.71UBUNTU-CVE-2026-43248
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1063.71~22.04.1UBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1062.69UBUNTU-CVE-2026-43248
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1062.69~22.04.1UBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-gcp6.8.0-1063.69UBUNTU-CVE-2026-43248
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1063.69~22.04.1UBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-gke6.8.0-1058.64UBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1045.48UBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-43248
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-43248
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-136.136~22.04.1UBUNTU-CVE-2026-43248

Affected products (as reported)

VendorProductVersions
Linux Linux bda324fd037a6b0d44da5699574ce741ca161bc4 – before 69ec8dd6696069c2f18430d0e05f81d604484ee8bda324fd037a6b0d44da5699574ce741ca161bc4 – before 566899af053246406f2faf931044d2b0af8f34d2bda324fd037a6b0d44da5699574ce741ca161bc4 – before ddb57354634b6ba851b79da45f1de42c646f27d0bda324fd037a6b0d44da5699574ce741ca161bc4 – before 7441d35d14d9a3d66d925d90cb73c75394e6d454bda324fd037a6b0d44da5699574ce741ca161bc4 – before 406db68f9cb976a8ddfafd631197264f2307e9c9bda324fd037a6b0d44da5699574ce741ca161bc4 – before cd025c1e876b4e262e71398236a1550486a73ede
Linux Linux 5.19

Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References