Improper control of a resource through its lifetime in Linux kernel - CVE-2026-72215

Vulnerability identifier: #VU143374

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-2026-72215

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 incorrect stack handling in prom_printf() when calling 32-bit firmware code from a kernel thread in 64-bit MIPS configurations. A local user can trigger console output during system bootstrap to cause a denial of service.

The issue occurs when the initial console remains in use late into bootstrap, causing the kernel to hang before startup completes.

Linux kernel
Ubuntu
linux-nvidia (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-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/1ed18b5c3be9657fe288fa4dae0bef2470598683
• https://git.kernel.org/stable/c/27857db30c98583e12dd8d939ba2370bce08a5be
• https://git.kernel.org/stable/c/3394757c5d3970ab36d2aafa6dd40952b43f0d16
• https://git.kernel.org/stable/c/3ae86630b94f72bf4012c6322f81f622dc4fdf24
• https://git.kernel.org/stable/c/5ff79e8bdc75db51e30298a75939e2308e7658e0
• https://git.kernel.org/stable/c/9cd4a8ed12d2a6313592e43c14cca5eca6717bee
• https://git.kernel.org/stable/c/d3fd2d358df0ca712183509cbbed6a16bde1d17e
• https://git.kernel.org/stable/c/d828bca84311e278093e60b2864a54f4bbb0c2ad

• Improper control of a resource through its lifetime in Linux kernel asm dec
• Ubuntu update for linux-gcp-7.0
• Ubuntu update for linux-nvidia
• Ubuntu update for linux-azure-7.0
• Ubuntu update for linux
• Ubuntu update for linux-azure
• Ubuntu update for linux-oem-7.0