Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-72378

Vulnerability identifier: #VU143059

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-2026-72378

CWE-ID: CWE-703

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 error handling in afs_extract_vl_addrs() when parsing AFS volume location address data. A local user can trigger processing of malformed address data to cause a denial of service.

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/4897cb71d4ab1f7e1a214adb1e4b80176702368d
• https://git.kernel.org/stable/c/4e0b047848a855f2c933a6439f76a01743ba5620
• https://git.kernel.org/stable/c/7ce6737a975ea3e0dc2e5946628d233779ca0caf
• https://git.kernel.org/stable/c/8530206911fd66ad739ca5ce95f1d069f3d42204
• https://git.kernel.org/stable/c/9ad9016e3333c3c1f9284a253ff0658369e07aac
• https://git.kernel.org/stable/c/bdcd80ff12939d172043fac5eb822b92366a1bab
• https://git.kernel.org/stable/c/cb33dd2968588c78fad78dec19f61cabe5785494
• https://git.kernel.org/stable/c/f70fbf2b974b63a7042705c2b0464cb8c97e9f34

• Improper Check or Handling of Exceptional Conditions in Linux kernel afs
• 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