Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before 6d99c5fadd2df488103f64d6475b63ba6852202b; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before c34369473bfe92a0b46ec78d6358e30341c7f481; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before 1002719d13072a5e4be1e993aa61dffb4a604e82; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before 500319830d76911c120dc0b9605f8c16d7702844; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before 3d61a214fdcda41f1ebfabbb483404032a7b4d91; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before 6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before ce42224487c504aee4b7ff3a7342e7b4d7e28cc9; affected 879f77e9071f029e1c9bd5a75814ecf51370f846 before b3ac78756588059729b9195fcc9f4b37d54057a5 |
| Linux / Linux | affected 4.8; unaffected 0 before 4.8; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.96 through 6.12.*; unaffected 6.18.39 through 6.18.*; unaffected 7.1.4 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6d99c5fadd2df488103f64d6475b63ba6852202b
- https://git.kernel.org/stable/c/c34369473bfe92a0b46ec78d6358e30341c7f481
- https://git.kernel.org/stable/c/1002719d13072a5e4be1e993aa61dffb4a604e82
- https://git.kernel.org/stable/c/500319830d76911c120dc0b9605f8c16d7702844
- https://git.kernel.org/stable/c/3d61a214fdcda41f1ebfabbb483404032a7b4d91
- https://git.kernel.org/stable/c/6fb62b767f3e27661e8f8d2f7b85f4e098fcdb1a
- https://git.kernel.org/stable/c/ce42224487c504aee4b7ff3a7342e7b4d7e28cc9
- https://git.kernel.org/stable/c/b3ac78756588059729b9195fcc9f4b37d54057a5
ADP enrichment
No English description supplied.
No references supplied.