Out-of-bounds write in Linux kernel - CVE-2026-80937

Vulnerability identifier: #VU149463

CSH Severity: Low

CVSS v4: 2.4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-80937

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows an attacker with physical access to cause memory corruption.

The vulnerability exists due to an out-of-bounds write in mt7915_mcu_get_eeprom() when processing a device-controlled MCU EEPROM response. An attacker with physical access can provide a response containing an arbitrary address to cause memory corruption.

Linux kernel
Debian Linux
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux (Debian package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
linux (Debian package) - update to 6.12.113-1

• https://git.kernel.org/stable/c/44b5adfe49499f53002737f5fe81d608c08122fc
• https://git.kernel.org/stable/c/5f48b0d752a76590e2c613aae5345c2474627d1b
• https://git.kernel.org/stable/c/5fdaf7016d7684ef756a229fd5d96b4a140eeb40

• Out-of-bounds write in Linux kernel mt76 mt7915 driver
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more