CVE-2026-43330
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
crypto: caam - fix overflow on long hmac keys
When a key longer than block size is supplied, it is copied and then
hashed into the real key. The memory allocated for the copy needs to
be rounded to DMA cache alignment, as otherwise the hashed key may
corrupt neighbouring memory.
The copying is performed using kmemdup, however this leads to an overflow:
reading more bytes (aligned_len - keylen) from the keylen source buffer.
Fix this by replacing kmemdup with kmalloc, followed by memcpy.
https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2
https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0ef
https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959
https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511d
https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448fae