CVE-2026-43330
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.
脆弱性の種類
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.
影響を受ける製品
- linux linux_kernel
参考情報
- 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