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

Vulnerability details

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.

Affected software

How to mitigate CVE-2026-93119

External References

• 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

Related Security Bulletins

• Stack-based buffer overflow in Linux kernel usb misc driver