Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: crypto: ecc - Fix carry overflow in vli multiplication The carry flag calculation fails when r01.m_high is saturated (0xFFFFFFFFFFFFFFFF) and addition of lower bits overflows. The condition (r01.m_high < product.m_high) doesn't handle the case where r01.m_high == product.m_high and an additional carry exists from lower-bit overflow. When commit 3c4b23901a0c ("crypto: ecdh - Add ECDH software support") introduced crypto/ecc.c, it split the muladd() function in the micro-ecc library into separate mul_64_64() and add_128_128() helpers. It seems the check got lost in translation. Add proper handling for this boundary by accounting for the carry from the lower addition.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before d11b2bb99bec1f5557c01cac42231e23745f49b8; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before b709e0e768766abe29a49e1c1922a1604be602f4; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before 24a54dfa06d09813b4802a374fad3d2c0e16a884; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before 677450e5ef850c4d28b7956aa01104548c2a894e; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before 5275e0fca256d081e2e7d4ba3dd8216c6e50d44e; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before 774ddddf5eb26eeca177350413e3e2bc50930ee9; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before ebaae7c4251cc0cdb2602f334d4f08a3e82d271e; affected 3c4b23901a0c766879dff680cd6bdab47bcdbbd2 before 27b536a2ec8e2f85a0380c2d13c9ecbc7aaab406 |
| 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/d11b2bb99bec1f5557c01cac42231e23745f49b8
- https://git.kernel.org/stable/c/b709e0e768766abe29a49e1c1922a1604be602f4
- https://git.kernel.org/stable/c/24a54dfa06d09813b4802a374fad3d2c0e16a884
- https://git.kernel.org/stable/c/677450e5ef850c4d28b7956aa01104548c2a894e
- https://git.kernel.org/stable/c/5275e0fca256d081e2e7d4ba3dd8216c6e50d44e
- https://git.kernel.org/stable/c/774ddddf5eb26eeca177350413e3e2bc50930ee9
- https://git.kernel.org/stable/c/ebaae7c4251cc0cdb2602f334d4f08a3e82d271e
- https://git.kernel.org/stable/c/27b536a2ec8e2f85a0380c2d13c9ecbc7aaab406
ADP enrichment
No English description supplied.
No references supplied.