Answer in brief
CVE-2026-68452 records a High severity (CVSS 7.8) vulnerability in s390/zcrypt: Validate length for CCA AES cipher key requests. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <406b317ea2b501f6f5eca1264293c9399a73a778 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <4fc46deceda076d429ef3fab2ccf8d96629ebd23 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <ad93a1f1a45652478c0cf4eb029114e03af57f3b || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <3859f630b674801a00bca39bc451f52288591f65 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <06afe425d5283b9764303de47f554da5a808ce8a | 406b317ea2b501f6f5eca1264293c9399a73a778, 4fc46deceda076d429ef3fab2ccf8d96629ebd23, ad93a1f1a45652478c0cf4eb029114e03af57f3b, 3859f630b674801a00bca39bc451f52288591f65, 06afe425d5283b9764303de47f554da5a808ce8a |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Linux/Linuxgeneric | >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <be037204e4f595e4bd2159acda146677a1dc6342 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <4e500ecb6704d879f9c2417c2ed6faba595015ca || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <7f9e5a3dbb14a9b321a1dfa30390402c673f82dc || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <406b317ea2b501f6f5eca1264293c9399a73a778 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <4fc46deceda076d429ef3fab2ccf8d96629ebd23 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <ad93a1f1a45652478c0cf4eb029114e03af57f3b || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <3859f630b674801a00bca39bc451f52288591f65 || >=4bc123b18ce6ae6c42c69d0456b5acbd2f7bc8bd <06afe425d5283b9764303de47f554da5a808ce8a | be037204e4f595e4bd2159acda146677a1dc6342, 4e500ecb6704d879f9c2417c2ed6faba595015ca, 7f9e5a3dbb14a9b321a1dfa30390402c673f82dc, 406b317ea2b501f6f5eca1264293c9399a73a778, 4fc46deceda076d429ef3fab2ccf8d96629ebd23, ad93a1f1a45652478c0cf4eb029114e03af57f3b, 3859f630b674801a00bca39bc451f52288591f65, 06afe425d5283b9764303de47f554da5a808ce8a |
Published upstream
Aug 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 13, 2026
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests cca_cipher2protkey() derives the copy length for the CPRB parameter block directly from the length field in the key token. Reject the request early if the token length exceeds the available space in the parameter block.
Quoted source text, attributed separately from HOL analysis.