Buffer Overflow Vulnerability in Linux Kernel Affecting Network Driver

CVE-2026-80693

What is CVE-2026-80693?

A buffer overflow vulnerability has been identified in the Linux kernel that may allow for out-of-bounds writes during the handling of network driver operations. Specifically, the vulnerability occurs in the idpf_get_reg_intr_vecs() function, which processes VIRTCHNL2_OP_ALLOC_VECTORS replies. The allocated array's size is not properly safeguarded against incoming data sizes, potentially allowing an attacker to manipulate register entries and conduct unauthorized operations that could compromise system integrity. This vulnerability emphasizes the need for stringent validation checks on data sizes to prevent such exploits.

References