CVE-2026-64304

Status: UPDATED  |  Advisory ID: CVE-2026-64304

Key Details

Affected Products, Subsystems & Sectors

What to Know

In the Linux kernel, the following vulnerability has been resolved:

crypto: qat - validate RSA CRT component lengths

The generic RSA key parser (rsa_helper.c) bounds each CRT component (p,

q, dp, dq, qinv) by the modulus size n_sz, but qat_rsa_setkey_crt()

allocates half-size DMA buffers (key_sz / 2) and right-aligns each

component with:

memcpy(dst + half_key_sz - len, src, len)

When a CRT component is larger than half_key_sz the subtraction

underflows and memcpy writes past the DMA buffer, causing memory

corruption.

Add a len > half_key_sz check next to the existing !len check for each

of the five CRT components so the driver falls back to the non-CRT path

instead of writing out of bounds. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References