High severity7.8NVD Advisory· Published May 1, 2026· Updated May 8, 2026
CVE-2026-43044
CVE-2026-43044
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
8cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.3,<6.6.134
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/5ddfdcbe10dc5f97afc4e46ca22be2be717e8cafnvdPatch
- git.kernel.org/stable/c/68feed135a0c7243a9275ae7e6a18260f755f52bnvdPatch
- git.kernel.org/stable/c/a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135anvdPatch
- git.kernel.org/stable/c/c0c133e0225d87aad326bb90bbce9bdd6fde3cbbnvdPatch
- git.kernel.org/stable/c/f2af8be110bde26b3e3354efdfdda97f426306a4nvdPatch
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