Improper handling of exceptional conditions in Linux kernel - CVE-2026-72314

Vulnerability identifier: #VU143122

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-2026-72314

CWE-ID: CWE-755

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 improper exception handling in regulator_lock_two() when handling lock contention between two regulators. A local user can trigger lock contention to cause a denial of service.

This issue is exploitable in practice on MIPS systems.

Linux kernel
Ubuntu
linux-nvidia (Ubuntu package)
linux-nvidia-tegra (Ubuntu package)
linux-gcp-7.0 (Ubuntu package)
linux (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux-azure-7.0 (Ubuntu package)
linux-azure (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-nvidia (Ubuntu package) - addressed in versions 5.15.0-1112.113, 5.15.0.1112.112
linux-nvidia-tegra (Ubuntu package) - update to 6.8.0-1036.39+1
linux-gcp-7.0 (Ubuntu package) - addressed in versions 7.0.0-38.38~24.04.4, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14~24.04.1
linux (Ubuntu package) - addressed in versions 7.0.0-38.38, 7.0.0-38.38.1, 7.0.0-1008.9, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14, 7.0.0-1015.15
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1015.15
linux-azure-7.0 (Ubuntu package) - addressed in versions 7.0.0-1016.16~24.04.1, 7.0.0-1017.17~24.04.1
linux-azure (Ubuntu package) - addressed in versions 7.0.0-1016.16, 7.0.0-1017.17

• https://git.kernel.org/stable/c/0c305eac40470a224671858a215963b070f9b2a9
• https://git.kernel.org/stable/c/153d1b8b5bc30847eb70ad535f62f289aa9217e6
• https://git.kernel.org/stable/c/29a7953e9adea6c7f9e64947745b79158e7cea7f
• https://git.kernel.org/stable/c/346e2d666a29ae7233c56b356a0487eb1d42589b
• https://git.kernel.org/stable/c/8e39aa63798ea0a797fd9341419f12ef91df3238
• https://git.kernel.org/stable/c/d38f8bd771c4999b797d7074b348cf201414bd34
• https://git.kernel.org/stable/c/dc804f390fddd9c389edf0976356942e16878d8f
• https://git.kernel.org/stable/c/e2063307ea3b6da74585129ba7b588e8243e2ef0

• Improper handling of exceptional conditions in Linux kernel regulator driver
• Ubuntu update for linux-gcp-7.0
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-azure-7.0
• Ubuntu update for linux-nvidia-tegra
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-oem-7.0