SB20260626175 - Integer overflow in Linux kernel accel ethosu driver

Description

This security bulletin contains information about 1 vulnerability.

1) Integer overflow (CVE-ID: CVE-2026-53171)

CWE-ID: CWE-190 - Integer 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 bypass bounds validation and cause out-of-bounds memory access.

The vulnerability exists due to integer overflow and underflow handling errors in dma_length() and command stream validation in the Ethos-U accelerator driver when processing command stream DMA parameters. A local user can supply a specially crafted command stream to under-report region usage and bypass bounds validation to cause out-of-bounds memory access.

The issue affects region_size[] calculations that are later used to validate command stream accesses against GEM buffer sizes.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/6bb73845d1855ceaf50e397175e5979a7bdf69bc
• https://git.kernel.org/stable/c/ee6d9b6e51626f259c6f0e38d94f91be4fd14754