crypto: qat - validate RSA CRT component lengths (Linux Linux)

CVE-2026-64304
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.17 % · centile 6 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

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.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 879f77e9071f029e1c9bd5a75814ecf51370f846 < 6d99c5fadd2df488103f64d6475b63ba6852202b ; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 < c34369473bfe92a0b46ec78d6358e30341c7f481 ; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 < 1002719d13072a5e4be1e993aa61dffb4a604e82 ; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 < 500319830d76911c120dc0b9605f8c16d7702844 ; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 < 3d61a214fdcda41f1ebfabbb483404032a7b4d91 ; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 < 6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a
Linux · Linuxaffected 4.8 ; unaffected 0 < 4.8 ; unaffected 5.10.261 ≤ 5.10.* ; unaffected 5.15.212 ≤ 5.15.* ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD