Race condition in Linux kernel - CVE-2026-89811

Vulnerability identifier: #VU150471

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-89811

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 AMD KFD MES queue management code when evicting or suspending MES queues while DMA descriptors are in flight. A local user can trigger queue eviction or suspension while in-flight DMA descriptors access unmapped memory to cause a denial of service.

The issue occurs during SVM page migration.

Linux kernel
Debian Linux
SUSE Linux Enterprise High Availability Extension 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for Power, little endian
Red Hat CodeReady Linux Builder for x86_64
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
SUSE Real Time Module
SUSE Linux Enterprise Live Patching
Public Cloud Module
Legacy Module
Development Tools Module
Basesystem Module
Ubuntu
linux (Ubuntu package)
linux-oracle (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
kernel-livepatch-6_4_0-150700_7_81-rt
kernel-livepatch-SLE15-SP7-RT_Update_22-debugsource
kernel-livepatch-6_4_0-150700_7_81-rt-debuginfo
kernel-livepatch-SLE15-SP7_Update_23-debugsource
kernel-livepatch-6_4_0-150700_53_87-default-debuginfo
kernel-livepatch-6_4_0-150700_53_87-default
kernel (Red Hat package)
kernel-rt (Red Hat package)
kernel-rt
kernel-source-rt
kernel-devel-rt
dlm-kmp-rt-debuginfo
kernel-syms-rt
gfs2-kmp-rt-debuginfo
cluster-md-kmp-rt
ocfs2-kmp-rt-debuginfo
kernel-rt-devel
gfs2-kmp-rt
ocfs2-kmp-rt
kernel-rt-debuginfo
kernel-rt-debugsource
dlm-kmp-rt
kernel-rt-devel-debuginfo
cluster-md-kmp-rt-debuginfo
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-64kb-debugsource
kernel-docs
kernel-default-extra-debuginfo
kernel-source
reiserfs-kmp-default
kernel-64kb-debuginfo
reiserfs-kmp-default-debuginfo
kernel-default-livepatch-devel
kernel-default-livepatch
kernel-azure
kernel-azure-debugsource
kernel-azure-devel-debuginfo
kernel-azure-debuginfo
kernel-azure-devel
kernel-default-extra
kernel-devel
kernel-64kb-devel
cluster-md-kmp-default-debuginfo
gfs2-kmp-default
ocfs2-kmp-default-debuginfo
dlm-kmp-default-debuginfo
kernel-default-debugsource
cluster-md-kmp-default
kernel-default-debuginfo
dlm-kmp-default
ocfs2-kmp-default
gfs2-kmp-default-debuginfo
kernel-default
kernel-default-devel
kernel-default-devel-debuginfo
kernel-macros
kernel-zfcpdump
kernel-zfcpdump-debugsource
kernel-zfcpdump-debuginfo
kernel-64kb
kernel-64kb-devel-debuginfo
kernel-default-base
linux (Debian package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
kernel-livepatch-6_4_0-150700_7_81-rt - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7-RT_Update_22-debugsource - update to 1-150700.1.3.1
kernel-livepatch-6_4_0-150700_7_81-rt-debuginfo - update to 1-150700.1.3.1
kernel-livepatch-SLE15-SP7_Update_23-debugsource - update to 1-150700.15.3.2
kernel-livepatch-6_4_0-150700_53_87-default-debuginfo - update to 1-150700.15.3.2
kernel-livepatch-6_4_0-150700_53_87-default - update to 1-150700.15.3.2
kernel (Red Hat package) - addressed in versions 4.18.0-553.173.1.el8_10, 6.12.0-211.68.1.el10_2
kernel-rt (Red Hat package) - update to 4.18.0-553.173.1.rt7.514.el8_10
kernel-rt - update to 6.4.0-150700.7.81.1
kernel-source-rt - update to 6.4.0-150700.7.81.1
kernel-devel-rt - update to 6.4.0-150700.7.81.1
dlm-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-syms-rt - update to 6.4.0-150700.7.81.1
gfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
cluster-md-kmp-rt - update to 6.4.0-150700.7.81.1
ocfs2-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-rt-devel - update to 6.4.0-150700.7.81.1
gfs2-kmp-rt - update to 6.4.0-150700.7.81.1
ocfs2-kmp-rt - update to 6.4.0-150700.7.81.1
kernel-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-rt-debugsource - update to 6.4.0-150700.7.81.1
dlm-kmp-rt - update to 6.4.0-150700.7.81.1
kernel-rt-devel-debuginfo - update to 6.4.0-150700.7.81.1
cluster-md-kmp-rt-debuginfo - update to 6.4.0-150700.7.81.1
kernel-syms - update to 6.4.0-150700.53.87.1
kernel-obs-build - update to 6.4.0-150700.53.87.2
kernel-obs-build-debugsource - update to 6.4.0-150700.53.87.2
kernel-64kb-debugsource - update to 6.4.0-150700.53.87.3
kernel-docs - update to 6.4.0-150700.53.87.3
kernel-default-extra-debuginfo - update to 6.4.0-150700.53.87.3
kernel-source - update to 6.4.0-150700.53.87.3
reiserfs-kmp-default - update to 6.4.0-150700.53.87.3
kernel-64kb-debuginfo - update to 6.4.0-150700.53.87.3
reiserfs-kmp-default-debuginfo - update to 6.4.0-150700.53.87.3
kernel-default-livepatch-devel - update to 6.4.0-150700.53.87.3
kernel-default-livepatch - update to 6.4.0-150700.53.87.3
kernel-azure - update to 6.4.0-150700.53.87.3
kernel-azure-debugsource - update to 6.4.0-150700.53.87.3
kernel-azure-devel-debuginfo - update to 6.4.0-150700.53.87.3
kernel-azure-debuginfo - update to 6.4.0-150700.53.87.3
kernel-azure-devel - update to 6.4.0-150700.53.87.3
kernel-default-extra - update to 6.4.0-150700.53.87.3
kernel-devel - update to 6.4.0-150700.53.87.3
kernel-64kb-devel - update to 6.4.0-150700.53.87.3
cluster-md-kmp-default-debuginfo - update to 6.4.0-150700.53.87.3
gfs2-kmp-default - update to 6.4.0-150700.53.87.3
ocfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.87.3
dlm-kmp-default-debuginfo - update to 6.4.0-150700.53.87.3
kernel-default-debugsource - update to 6.4.0-150700.53.87.3
cluster-md-kmp-default - update to 6.4.0-150700.53.87.3
kernel-default-debuginfo - update to 6.4.0-150700.53.87.3
dlm-kmp-default - update to 6.4.0-150700.53.87.3
ocfs2-kmp-default - update to 6.4.0-150700.53.87.3
gfs2-kmp-default-debuginfo - update to 6.4.0-150700.53.87.3
kernel-default - update to 6.4.0-150700.53.87.3
kernel-default-devel - update to 6.4.0-150700.53.87.3
kernel-default-devel-debuginfo - update to 6.4.0-150700.53.87.3
kernel-macros - update to 6.4.0-150700.53.87.3
kernel-zfcpdump - update to 6.4.0-150700.53.87.3
kernel-zfcpdump-debugsource - update to 6.4.0-150700.53.87.3
kernel-zfcpdump-debuginfo - update to 6.4.0-150700.53.87.3
kernel-64kb - update to 6.4.0-150700.53.87.3
kernel-64kb-devel-debuginfo - update to 6.4.0-150700.53.87.3
kernel-default-base - update to 6.4.0-150700.53.87.3.150700.17.49.2
linux (Debian package) - update to 6.12.115-2

• https://git.kernel.org/stable/c/6aae545c87087e4dc96e205452243813bfa73ba2
• https://git.kernel.org/stable/c/94e25cb6ab7f4f025bcdcd8ea79fda30f12843a4
• https://git.kernel.org/stable/c/e230c546ed93741833ab5babb0b202f9c2052b45

• Race condition in Linux kernel amd amdkfd driver
• Red Hat Enterprise Linux 8 update for kernel-rt
• Red Hat Enterprise Linux 8 update for kernel
• Red Hat Enterprise Linux 10 update for kernel
• SUSE update for the Linux Kernel
• SUSE update for the Linux Kernel
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more