CVE-2026-43336
Description
In the Linux kernel, the following vulnerability has been resolved: lib/crypto: chacha: Zeroize permuted_state before it leaves scope Since the ChaCha permutation is invertible, the local variable 'permuted_state' is sufficient to compute the original 'state', and thus the key, even after the permutation has been done. While the kernel is quite inconsistent about zeroizing secrets on the stack (and some prominent userspace crypto libraries don't bother at all since it's not guaranteed to work anyway), the kernel does try to do it as a best practice, especially in cases involving the RNG. Thus, explicitly zeroize 'permuted_state' before it goes out of scope.
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 | 6.1.170-1 |
| debian | bullseye | fixed | 5.10.257-1 |
| debian | forky | fixed | 6.19.12-1 |
| debian | sid | fixed | 6.19.12-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 5.10.253 | |
| linux-kernel | 7.0 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gcp | | |
References
- https://git.kernel.org/stable/c/066c760acead1fb743bae294dbd89f479ae43b9b
- https://git.kernel.org/stable/c/1933249263c3a98df79992f61a566476e4163bcc
- https://git.kernel.org/stable/c/1d761e5a7340c46479fb2399598f331e4fe2c633
- https://git.kernel.org/stable/c/91999af43ca2125e3b2c18fcfc02912ada02efc3
- https://git.kernel.org/stable/c/b416a4245f04a450c67a13e6d96056c37c5b33fe
- https://git.kernel.org/stable/c/bd62d9b44464a6c20a34a74068e7a784d0afa04a
- https://git.kernel.org/stable/c/e5046823f8fa3677341b541a25af2fcb99a5b1e0
- https://git.kernel.org/stable/c/e90ee961af515a484f091678ce58a4c3f7b73b02
- https://www.suse.com/security/cve/CVE-2026-43336.html
- https://security-tracker.debian.org/tracker/CVE-2026-43336
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.