CVE-2026-68452
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/06afe425d5283b9764303de47f554da5a808ce8a
- https://git.kernel.org/stable/c/3859f630b674801a00bca39bc451f52288591f65
- https://git.kernel.org/stable/c/406b317ea2b501f6f5eca1264293c9399a73a778
- https://git.kernel.org/stable/c/4e500ecb6704d879f9c2417c2ed6faba595015ca
- https://git.kernel.org/stable/c/4fc46deceda076d429ef3fab2ccf8d96629ebd23
- https://git.kernel.org/stable/c/7f9e5a3dbb14a9b321a1dfa30390402c673f82dc
- https://git.kernel.org/stable/c/ad93a1f1a45652478c0cf4eb029114e03af57f3b
- https://git.kernel.org/stable/c/be037204e4f595e4bd2159acda146677a1dc6342
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.