Race condition in Linux kernel - CVE-2026-23469

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Main Vulnerability Database Vulnerabilities #VU124901

Race condition in Linux kernel - CVE-2026-23469

Published: April 6, 2026


Vulnerability identifier: #VU124901
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-2026-23469
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to a race condition in the drm/imagination GPU driver interrupt handling during runtime power management suspend when suspending the GPU while an IRQ handler is still running on another CPU core. A local attacker can trigger GPU activity that races with runtime suspend to cause a denial of service.

This issue can lead to kernel crashes or a kernel panic when the IRQ handler accesses GPU registers while the GPU is suspended.


Affected software

Linux kernel
Debian Linux
Ubuntu
linux (Ubuntu package)
linux-lowlatency (Ubuntu package)
linux-raspi (Ubuntu package)
linux-azure (Ubuntu package)
linux-gcp (Ubuntu package)
linux-aws (Ubuntu package)
linux-ibm (Ubuntu package)
linux-oracle (Ubuntu package)
linux-azure-fde (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-realtime (Ubuntu package)
linux-lowlatency-hwe-6.8 (Ubuntu package)
linux-fips (Ubuntu package)
linux-azure-fde-6.8 (Ubuntu package)
linux-azure-6.8 (Ubuntu package)
linux-aws-6.8 (Ubuntu package)
linux-oracle-6.8 (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-nvidia-lowlatency (Ubuntu package)
linux-gkeop (Ubuntu package)
linux-nvidia-6.8 (Ubuntu package)
linux-gke (Ubuntu package)
linux-ibm-6.8 (Ubuntu package)
linux-xilinx (Ubuntu package)
linux-gcp-6.8 (Ubuntu package)
linux-aws-fips (Ubuntu package)
linux-gcp-fips (Ubuntu package)
linux-azure-fips (Ubuntu package)
linux-raspi-realtime (Ubuntu package)
linux-realtime-6.8 (Ubuntu package)
linux (Debian package)

How to mitigate CVE-2026-23469

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - update to 6.8.0-139.139
linux-lowlatency (Ubuntu package) - update to 6.8.0-139.139.1
linux-raspi (Ubuntu package) - update to 6.8.0-1064.68
linux-azure (Ubuntu package) - update to 6.8.0-1067.75
linux-gcp (Ubuntu package) - update to 6.8.0-1067.75
linux-aws (Ubuntu package) - update to 6.8.0-1064.67
linux-ibm (Ubuntu package) - update to 6.8.0-1064.65
linux-oracle (Ubuntu package) - update to 6.8.0-1061.64
linux-azure-fde (Ubuntu package) - update to 6.8.0-1065.72
linux-nvidia (Ubuntu package) - update to 6.8.0-1062.65
linux-realtime (Ubuntu package) - update to 6.8.1-1059.60
linux-lowlatency-hwe-6.8 (Ubuntu package) - update to 6.8.0-139.139.1~22.04.1
linux-fips (Ubuntu package) - update to 6.8.0-139.139+fips1
linux-azure-fde-6.8 (Ubuntu package) - update to 6.8.0-1065.72~22.04.1
linux-azure-6.8 (Ubuntu package) - update to 6.8.0-1067.75~22.04.1
linux-aws-6.8 (Ubuntu package) - update to 6.8.0-1064.67~22.04.1
linux-oracle-6.8 (Ubuntu package) - update to 6.8.0-1061.64~22.04.1
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1035.38
linux-nvidia-lowlatency (Ubuntu package) - update to 6.8.0-1062.65.1
linux-gkeop (Ubuntu package) - update to 6.8.0-1049.53
linux-nvidia-6.8 (Ubuntu package) - update to 6.8.0-1062.65~22.04.1
linux-gke (Ubuntu package) - update to 6.8.0-1062.70
linux-ibm-6.8 (Ubuntu package) - update to 6.8.0-1066.67~22.04.1
linux-xilinx (Ubuntu package) - update to 6.8.0-1036.37
linux-gcp-6.8 (Ubuntu package) - update to 6.8.0-1067.75~22.04.1
linux-aws-fips (Ubuntu package) - update to 6.8.0-1064.67+fips1
linux-gcp-fips (Ubuntu package) - update to 6.8.0-1067.75+fips1
linux-azure-fips (Ubuntu package) - update to 6.8.0-1067.75+fips1
linux-raspi-realtime (Ubuntu package) - update to 6.8.0-2053.55
linux-realtime-6.8 (Ubuntu package) - update to 6.8.1-1059.60~22.04.1
linux (Debian package) - update to 6.12.94-1

External References

Related Security Bulletins