Out-of-bounds read in Linux kernel - CVE-2026-72232

Vulnerability identifier: #VU143355

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-72232

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to disclose sensitive information.

The vulnerability exists due to out-of-bounds read in batadv_interface_tx() when processing a truncated packet redirected to a batadv interface through a tc filter. A local user can attach a tc filter that truncates the packet and redirects it to a batadv interface to disclose sensitive information.

Exploitation requires eBPF TC hook access.

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/38cd10b0aeec755d89f78722a2b83f4088ff0cb0
• https://git.kernel.org/stable/c/49df66b7993c80b80c7eb9a84ba5b3410c8296a0
• https://git.kernel.org/stable/c/58799078afebd5115e052bf69ad6697f9759dd6f
• https://git.kernel.org/stable/c/6b4f521e01257387906f8b969ad3450d8208d4e2
• https://git.kernel.org/stable/c/811fea37620f2097955d95ce81cfdba03fd30f1b
• https://git.kernel.org/stable/c/9e16b6751a8206de0b865d99bb02771e6751d12d
• https://git.kernel.org/stable/c/dbeb4145d9778f922f459935da9a027750765a69
• https://git.kernel.org/stable/c/e6640923afee619d9fa82b07394dc9498e202304

• Out-of-bounds read in Linux kernel batman-adv
• 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