Vulnerability details
CVE-2026-43044
Linux Linux
crypto: caam - fix DMA corruption on long hmac keys
CVSS 3.1
7.8High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 199354d7fb6eaa2cc5bb650af0bca624baffee35 ≤ v < a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 199354d7fb6eaa2cc5bb650af0bca624baffee35 ≤ v < c0c133e0225d87aad326bb90bbce9bdd6fde3cbb | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 199354d7fb6eaa2cc5bb650af0bca624baffee35 ≤ v < 68feed135a0c7243a9275ae7e6a18260f755f52b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 199354d7fb6eaa2cc5bb650af0bca624baffee35 ≤ v < f2af8be110bde26b3e3354efdfdda97f426306a4 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 199354d7fb6eaa2cc5bb650af0bca624baffee35 ≤ v < 5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://git.kernel.org/stable/c/a7ecf06d3ee06e9b3322e1e7b003ea5c6f6e135a
- https://git.kernel.org/stable/c/c0c133e0225d87aad326bb90bbce9bdd6fde3cbb
- https://git.kernel.org/stable/c/68feed135a0c7243a9275ae7e6a18260f755f52b
- https://git.kernel.org/stable/c/f2af8be110bde26b3e3354efdfdda97f426306a4
- https://git.kernel.org/stable/c/5ddfdcbe10dc5f97afc4e46ca22be2be717e8caf
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Details
- Published
- 2026-05-01
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.12%
Probability of exploitation in 30 days
1.8%
Percentile (among all CVEs)
Weaknesses (CWE)
- —