Improper control of a resource through its lifetime in Linux kernel - CVE-2026-72371

Vulnerability identifier: #VU143071

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-2026-72371

CWE-ID: CWE-664

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 state management in afs_insert_volume_into_cell() when replacing an AFS volume entry in the cell volume tree. A local user can trigger volume replacement operations to cause a denial of service.

The issue can cause the old volume to be removed from the tree twice while the new volume is never removed.

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/158c5a0b1dfc0e6a419efe18404047a4d2dff59e
• https://git.kernel.org/stable/c/1607075220cf57161d9116512994c159eacefc0d
• https://git.kernel.org/stable/c/56b4e4b26f84411d880f968a539207b0a8889c8c
• https://git.kernel.org/stable/c/6fa9a8a73e16aa22fce6e41cc00d59c767f0a540
• https://git.kernel.org/stable/c/c421bc6b957e56e45e12dbaeaf70a60db20d6465
• https://git.kernel.org/stable/c/d0c8ad418b47891a03426c5e02ebb0537f8d68f8
• https://git.kernel.org/stable/c/d154c20837f379343f192d4b8d9dd4ef145562e6

• Improper control of a resource through its lifetime 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