Race condition in Linux kernel - CVE-2026-45894

Vulnerability identifier: #VU132596

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-45894

CWE-ID: CWE-362

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a race condition in the Intel VT-d scalable mode PASID table entry handling when tearing down an active PASID entry. A local user can trigger concurrent PASID entry teardown to cause a denial of service.

The issue can lead to unpredictable behavior or spurious faults if the IOMMU hardware observes a torn read of the entry.

Linux kernel
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Micro
SUSE Linux Micro Extras
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat CodeReady Linux Builder for x86_64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for ARM 64
SUSE Real Time Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
Basesystem Module
openEuler
Ubuntu
kernel-livepatch-6_4_0-150700_7_62-rt
kernel-livepatch-SLE15-SP7-RT_Update_17-debugsource
kernel-livepatch-6_4_0-150700_7_62-rt-debuginfo
kernel-livepatch-SLE15-SP7_Update_17-debugsource
kernel-livepatch-6_4_0-150700_53_63-default
kernel-livepatch-6_4_0-150700_53_63-default-debuginfo
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
python3-perf-debuginfo
kernel-64kb-devel
kernel-default
kernel-64kb
kernel-syms
kernel-kvmsmall-debugsource
kernel-kvmsmall-debuginfo
kernel-default-livepatch
kernel-kvmsmall
kernel-macros
kernel-default-debugsource
kernel-default-debuginfo
kernel-default-devel
kernel-obs-build-debugsource
kernel-default-devel-debuginfo
kernel-64kb-debugsource
kernel-obs-build
kernel-default-base
kernel-rt-devel-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-rt-devel
kernel-syms-rt
kernel-rt-debugsource
cluster-md-kmp-rt
ocfs2-kmp-rt-debuginfo
kernel-source-rt
ocfs2-kmp-rt
gfs2-kmp-rt
dlm-kmp-rt-debuginfo
kernel-rt-debuginfo
gfs2-kmp-rt-debuginfo
dlm-kmp-rt
kernel-rt
kernel-devel-rt
kernel-azure-devel-debuginfo
kernel-azure-devel
kernel-azure-debuginfo
kernel-azure-debugsource
kernel-azure
kernel-docs
kernel-default-extra-debuginfo
kernel-default-extra
kernel-default-livepatch-devel
reiserfs-kmp-default
ocfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
gfs2-kmp-default
cluster-md-kmp-default-debuginfo
reiserfs-kmp-default-debuginfo
ocfs2-kmp-default
dlm-kmp-default
gfs2-kmp-default-debuginfo
cluster-md-kmp-default
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-64kb-debuginfo
kernel-64kb-devel-debuginfo
kernel-zfcpdump
kernel-extra-modules
linux-nvidia-tegra (Ubuntu package)
kernel-zfcpdump-modules-extra (Red Hat package)
kernel-rt-64k-core (Red Hat package)
kernel-rt-64k (Red Hat package)
kernel-debuginfo-common-aarch64 (Red Hat package)
kernel-64k-devel-matched (Red Hat package)
kernel-64k-devel (Red Hat package)
kernel-64k-debuginfo (Red Hat package)
kernel-64k-debug-devel-matched (Red Hat package)
kernel-64k-debug-devel (Red Hat package)
kernel-debuginfo-common-ppc64le (Red Hat package)
kernel-rt-64k-debug (Red Hat package)
kernel-zfcpdump-modules-core (Red Hat package)
kernel-zfcpdump-modules (Red Hat package)
kernel-zfcpdump-devel-matched (Red Hat package)
kernel-zfcpdump-devel (Red Hat package)
kernel-zfcpdump-core (Red Hat package)
kernel-zfcpdump (Red Hat package)
kernel-debuginfo-common-s390x (Red Hat package)
rv (Red Hat package)
kernel-rt-64k-modules (Red Hat package)
kernel-debug (Red Hat package)
kernel-debug-core (Red Hat package)
kernel-debug-debuginfo (Red Hat package)
libperf (Red Hat package)
kernel-tools-libs-devel (Red Hat package)
kernel-cross-headers (Red Hat package)
kernel-rt-64k-modules-extra (Red Hat package)
kernel-rt-64k-modules-core (Red Hat package)
rtla (Red Hat package)
kernel-rt-64k-devel (Red Hat package)
kernel-rt-64k-debuginfo (Red Hat package)
kernel-rt-64k-debug-modules-extra (Red Hat package)
kernel-rt-64k-debug-modules-core (Red Hat package)
kernel-rt-64k-debug-modules (Red Hat package)
kernel-rt-64k-debug-devel (Red Hat package)
kernel-rt-64k-debug-debuginfo (Red Hat package)
kernel-rt-64k-debug-core (Red Hat package)
kernel-devel-matched (Red Hat package)
kernel-rt-debug (Red Hat package)
kernel-rt-core (Red Hat package)
kernel-modules-extra-matched (Red Hat package)
kernel-modules-extra (Red Hat package)
kernel-modules-core (Red Hat package)
kernel-modules (Red Hat package)
kernel-headers (Red Hat package)
kernel-rt-debug-core (Red Hat package)
kernel-devel (Red Hat package)
kernel-debuginfo-common-x86_64 (Red Hat package)
kernel-debuginfo (Red Hat package)
kernel-debug-uki-virt (Red Hat package)
kernel-debug-modules-extra (Red Hat package)
kernel-debug-modules-core (Red Hat package)
kernel-debug-modules (Red Hat package)
kernel-debug-devel-matched (Red Hat package)
kernel-rt-modules-core (Red Hat package)
python3-perf (Red Hat package)
perf (Red Hat package)
kernel-uki-virt-addons (Red Hat package)
kernel-uki-virt (Red Hat package)
kernel-tools-libs (Red Hat package)
kernel-tools-debuginfo (Red Hat package)
kernel-tools (Red Hat package)
kernel-rt-modules-extra (Red Hat package)
kernel-debug-devel (Red Hat package)
kernel-rt-modules (Red Hat package)
kernel-rt-devel (Red Hat package)
kernel-rt-debuginfo (Red Hat package)
kernel-rt-debug-modules-extra (Red Hat package)
kernel-rt-debug-modules-core (Red Hat package)
kernel-rt-debug-modules (Red Hat package)
kernel-rt-debug-devel (Red Hat package)
kernel-rt-debug-debuginfo (Red Hat package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-livepatch-6_4_0-150700_7_62-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_17-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_62-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7_Update_17-debugsource - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_63-default - update to 1-150700.15.3.1
kernel-livepatch-6_4_0-150700_53_63-default-debuginfo - update to 1-150700.15.3.1
kernel (Red Hat package) - addressed in versions 4.18.0-553.166.1.el8_10, 5.14.0-687.50.1.el9_8
kernel-rt (Red Hat package) - addressed in versions 4.18.0-553.166.1.rt7.507.el8_10, 6.12.0-211.58.1.el10_2
kernel - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
bpftool - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
bpftool-debuginfo - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-debuginfo - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-debugsource - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-devel - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-headers - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-source - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-tools - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-tools-debuginfo - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-tools-devel - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
perf - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
perf-debuginfo - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
python3-perf - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
python3-perf-debuginfo - addressed in versions 5.10.0-318.0.0.221, 6.6.0-145.1.15.153, 6.6.0-145.3.15.146
kernel-64kb-devel - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-default - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-64kb - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-syms - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-kvmsmall-debugsource - update to 6.4.0-48.1
kernel-kvmsmall-debuginfo - update to 6.4.0-48.1
kernel-default-livepatch - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-kvmsmall - update to 6.4.0-48.1
kernel-source - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-devel - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-macros - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-default-debugsource - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-default-debuginfo - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-default-devel - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-obs-build-debugsource - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-default-devel-debuginfo - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-64kb-debugsource - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-obs-build - addressed in versions 6.4.0-48.1, 6.4.0-150700.53.63.1
kernel-default-base - addressed in versions 6.4.0-48.1.21.25, 6.4.0-150700.53.63.1.150700.17.37.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.62.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
kernel-rt-devel - update to 6.4.0-150700.7.62.1
kernel-syms-rt - update to 6.4.0-150700.7.62.1
kernel-rt-debugsource - update to 6.4.0-150700.7.62.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.62.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
kernel-source-rt - update to 6.4.0-150700.7.62.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.62.1
gfs2-kmp-rt - update to 6.4.0-150700.7.62.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.62.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.62.1
dlm-kmp-rt - update to 6.4.0-150700.7.62.1
kernel-rt - update to 6.4.0-150700.7.62.1
kernel-devel-rt - update to 6.4.0-150700.7.62.1
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.63.1
kernel-azure-devel - update to 6.4.0-150700.53.63.1
kernel-azure-debuginfo - update to 6.4.0-150700.53.63.1
kernel-azure-debugsource - update to 6.4.0-150700.53.63.1
kernel-azure - update to 6.4.0-150700.53.63.1
kernel-docs - update to 6.4.0-150700.53.63.1
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.63.1
kernel-default-extra - update to 6.4.0-150700.53.63.1
kernel-default-livepatch-devel - update to 6.4.0-150700.53.63.1
reiserfs-kmp-default - update to 6.4.0-150700.53.63.1
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.63.1
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.63.1
gfs2-kmp-default - update to 6.4.0-150700.53.63.1
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.63.1
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.63.1
ocfs2-kmp-default - update to 6.4.0-150700.53.63.1
dlm-kmp-default - update to 6.4.0-150700.53.63.1
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.63.1
cluster-md-kmp-default - update to 6.4.0-150700.53.63.1
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.63.1
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.63.1
kernel-64kb-debuginfo - update to 6.4.0-150700.53.63.1
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.63.1
kernel-zfcpdump - update to 6.4.0-150700.53.63.1
kernel-extra-modules - update to 6.6.0-145.3.15.146
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1035.38
kernel-zfcpdump-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debuginfo-common-aarch64 (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-64k-devel-matched (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-64k-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-64k-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-64k-debug-devel-matched (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-64k-debug-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debuginfo-common-ppc64le (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-zfcpdump-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-zfcpdump-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-zfcpdump-devel-matched (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-zfcpdump-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-zfcpdump-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-zfcpdump (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debuginfo-common-s390x (Red Hat package) - update to 6.12.0-211.58.1.el10_2
rv (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
libperf (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-tools-libs-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-cross-headers (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
rtla (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-64k-debug-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-devel-matched (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-modules-extra-matched (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-headers (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debuginfo-common-x86_64 (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-uki-virt (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-devel-matched (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
python3-perf (Red Hat package) - update to 6.12.0-211.58.1.el10_2
perf (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-uki-virt-addons (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-uki-virt (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-tools-libs (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-tools-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-tools (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-debug-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug-modules-extra (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug-modules-core (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug-modules (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug-devel (Red Hat package) - update to 6.12.0-211.58.1.el10_2
kernel-rt-debug-debuginfo (Red Hat package) - update to 6.12.0-211.58.1.el10_2

• https://git.kernel.org/stable/c/75ed00055c059dedc47b5daaaa2f8a7a019138ff
• https://git.kernel.org/stable/c/821807c167b7b48a41b95b6607c6b9f97600f7d9
• https://git.kernel.org/stable/c/949d71666e9dd19f21e7b4b53a88cd2c5b902858
• https://git.kernel.org/stable/c/a84d30e8d2bacd21782a6481158b7c9c552f4868

• Race condition in Linux kernel iommu intel driver
• openEuler 24.03 LTS SP3 update for kernel
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 22.03 LTS SP4 update for kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 10 update for kernel
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 9 update for kernel
• Ubuntu update for linux-nvidia-tegra