CVE-2026-43330
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.12-1 |
| debian | sid | fixed | 6.19.12-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 6.6.134 | |
| linux-kernel | 7.0 | affected | |
References
- https://git.kernel.org/stable/c/31022cfde5235c45fa765f0aabeff5f0652852f2
- https://git.kernel.org/stable/c/80688afb9c35b3934ce2d6be9973758915e2e0ef
- https://git.kernel.org/stable/c/aa545df011338df13f0833fc1fabcb15c0521959
- https://git.kernel.org/stable/c/c2fb4984fe09fc176fe4c12d5e3edf626df6511d
- https://git.kernel.org/stable/c/cebc5ebd958346195b77f42d0cd5141b4e448fae
- https://www.suse.com/security/cve/CVE-2026-43330.html
- https://security-tracker.debian.org/tracker/CVE-2026-43330
CWEs
CWE-787
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.