SB20260626147 - Heap-based buffer overflow in Linux kernel accel ivpu driver

Description

This security bulletin contains information about 1 vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2026-53203)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: 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/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a heap-based buffer overflow in the ivpu_ms_get_info_ioctl function when processing a metric stream info query from firmware and copying the returned data into an allocated buffer. A local user can trigger the metric stream info query with a returned size larger than the allocated buffer to cause a denial of service.

The issue involves the accel/ivpu driver metric stream get_info ioctl path.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/4e5047cc94bea1cc7b670b7f503358e9af0542df
• https://git.kernel.org/stable/c/d3c12ed33e8923f3090909a1738f3e59292996a6
• https://git.kernel.org/stable/c/fa598556ecef412edcb391f144b7642e18fdfd45
• https://git.kernel.org/stable/c/fb176425837693f50c5c9fc8db6fbb04af22bd0a