Answer in brief
CVE-2026-64304 records a High severity (CVSS 7.8) vulnerability in crypto: qat - validate RSA CRT component lengths. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=879f77e9071f029e1c9bd5a75814ecf51370f846 <6d99c5fadd2df488103f64d6475b63ba6852202b || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <c34369473bfe92a0b46ec78d6358e30341c7f481 || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <1002719d13072a5e4be1e993aa61dffb4a604e82 || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <500319830d76911c120dc0b9605f8c16d7702844 || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <3d61a214fdcda41f1ebfabbb483404032a7b4d91 || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <ce42224487c504aee4b7ff3a7342e7b4d7e28cc9 || >=879f77e9071f029e1c9bd5a75814ecf51370f846 <b3ac78756588059729b9195fcc9f4b37d54057a5 | 6d99c5fadd2df488103f64d6475b63ba6852202b, c34369473bfe92a0b46ec78d6358e30341c7f481, 1002719d13072a5e4be1e993aa61dffb4a604e82, 500319830d76911c120dc0b9605f8c16d7702844, 3d61a214fdcda41f1ebfabbb483404032a7b4d91, 6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a, ce42224487c504aee4b7ff3a7342e7b4d7e28cc9, b3ac78756588059729b9195fcc9f4b37d54057a5 |
| Linux/Linuxgeneric | 4.8 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.