CVE-2026-43330
crypto: caam - fix overflow on long hmac keys
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Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2
- https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511d
- https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959
- https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448fae
- https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0ef
References (5)
CVSS
Quick Info
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