CVE-2026-43336
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
lib/crypto: chacha: Zeroize permuted_state before it leaves scope
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | e90ee961af515a484f091678ce58a4c3f7b73b02 | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | b416a4245f04a450c67a13e6d96056c37c5b33fe | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | bd62d9b44464a6c20a34a74068e7a784d0afa04a | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | 066c760acead1fb743bae294dbd89f479ae43b9b | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | 1d761e5a7340c46479fb2399598f331e4fe2c633 | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | 1933249263c3a98df79992f61a566476e4163bcc | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | 91999af43ca2125e3b2c18fcfc02912ada02efc3 | Unavailable | None listed |
| c08d0e647305c3f8f640010a56c9e4bafb9488d3 | affected | git | e5046823f8fa3677341b541a25af2fcb99a5b1e0 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | None listed |
| 5.10.253 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.203 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.169 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.135 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.82 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.22 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.12 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |