Stack-based buffer overflow in Linux kernel - CVE-2026-93119

Vulnerability identifier: #VU150888

CSH Severity: Low

CVSS v4: 0 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-93119

CWE-ID: CWE-121

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows an attacker with physical access to cause a stack-based buffer overflow.

The vulnerability exists due to a stack-based buffer overflow in the valid_pin array in ljca_enumerate_gpio() when processing device-provided GPIO descriptors. An attacker with physical access can report a bank_num value exceeding the valid_pin array capacity to cause a stack-based buffer overflow.

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 6.12.111-1

• https://git.kernel.org/stable/c/0069593170a3d177de793c9a0b36989c4f069111
• https://git.kernel.org/stable/c/9c4bc8f7426aa001387800bf0140bfc5087a6de3
• https://git.kernel.org/stable/c/aed958c4f784a29cf42abb3e54af51a16bddde46
• https://git.kernel.org/stable/c/dd9483726d0f16c1a56879c3edb65128259a4e2b

• Stack-based buffer overflow in Linux kernel usb misc driver
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more