CVE-2026-43330crypto: caam - fix overflow on long hmac keys
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 199354d7fb6eaa2cc5bb650af0bca624baffee35 builds before 31022cfde5235c45fa765f0aabeff5f0652852f2; from 199354d7fb6eaa2cc5bb650af0bca624baffee35 before c2fb4984fe09fc176fe4c12d5e3edf626df6511d; from 199354d7fb6eaa2cc5bb650af0bca624baffee35 before aa545df011338df13f0833fc1fabcb15c0521959; from 199354d7fb6eaa2cc5bb650af0bca624baffee35 before cebc5ebd958346195b77f42d0cd5141b4e448fae; 199354d7fb6eaa2cc5bb650af0bca624baffee35 builds before 80688afb9c35b3934ce2d6be9973758915e2e0ef | CNA record |
linux linux_kernel linux:linux_kernel | from 6.3 before 6.6.134; from 6.7 before 6.12.81; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 7.0; 7.0; 7.0; 7.0; and 2 more ranges | NVD |
References
- https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2patch
- https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511dpatch
- https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959patch
- https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448faepatch
- https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0efpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.