Tracker / CVE-2026-64304
CVE-2026-64304
High 7.8
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.
Affected products and versions
| linux | linux_kernel · 4.8 → 5.10.261 |
|---|---|
| linux | linux_kernel · 5.11 → 5.15.212 |
| linux | linux_kernel · 5.16 → 6.1.178 |
| linux | linux_kernel · 6.13 → 6.18.39 |
| linux | linux_kernel · 6.19 → 7.1.4 |
| linux | linux_kernel · 6.2 → 6.6.145 |
| linux | linux_kernel · 6.7 → 6.12.96 |
Analysis
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