Description
In the Linux kernel, the following vulnerability has been resolved: crypto: caam - fix DMA corruption 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 rounding was performed, but never actually used for the allocation. Fix this by replacing kmemdup with kmalloc for a larger buffer, followed by memcpy.
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf Patch
- git.kernel.org/stable/c/68feed135a0c7243a9275ae7e6a18260f755f52b Patch
- git.kernel.org/stable/c/a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a Patch
- git.kernel.org/stable/c/c0c133e0225d87aad326bb90bbce9bdd6fde3cbb Patch
- git.kernel.org/stable/c/f2af8be110bde26b3e3354efdfdda97f426306a4 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 13 November 2026
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