CVE-2026-43336In 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 'p…
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- 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
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 4.2 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.169; from 6.2 before 6.6.135; from 6.7 before 6.12.82; from 6.13 before 6.18.22; from 6.19 before 6.19.12; 7.0; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/066c760acead1fb743bae294dbd89f479ae43b9bpatch
- https://git.kernel.org/stable/c/1933249263c3a98df79992f61a566476e4163bccpatch
- https://git.kernel.org/stable/c/1d761e5a7340c46479fb2399598f331e4fe2c633patch
- https://git.kernel.org/stable/c/91999af43ca2125e3b2c18fcfc02912ada02efc3patch
- https://git.kernel.org/stable/c/b416a4245f04a450c67a13e6d96056c37c5b33fepatch
- https://git.kernel.org/stable/c/bd62d9b44464a6c20a34a74068e7a784d0afa04apatch
- https://git.kernel.org/stable/c/e5046823f8fa3677341b541a25af2fcb99a5b1e0patch
- https://git.kernel.org/stable/c/e90ee961af515a484f091678ce58a4c3f7b73b02patch
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.