CVE-2026-68451
High
Description
In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA ECC private key requests cca_ecc2protkey() 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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-120CWE-120
How to fix
Update
- Linux Linux7dc306ff7c4d951582adaae65e0aee9fb4968dbe, 447a37a6bef11bfd3645069e380460b11386e2b9, f0831f13c42c1261d449dcee8a035e1c6cd9fcaa, dd25bd9b0f36849808bd7625dcc59dd4c1aeef3e, ecc3b8691c1935f9f3e4eb964ab11e40fdec17f5, 013a4484f061a2b41f052e25c0015203287e63f1, 8fa3e9435a13c335efb63fb4f4e77531a0031159, a9ae0f6dd45c3ccc1d69363f7aea8af179122730 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < 7dc306ff7c4d951582adaae65e0aee9fb4968dbe, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < 447a37a6bef11bfd3645069e380460b11386e2b9, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < f0831f13c42c1261d449dcee8a035e1c6cd9fcaa, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < dd25bd9b0f36849808bd7625dcc59dd4c1aeef3e, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < ecc3b8691c1935f9f3e4eb964ab11e40fdec17f5, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < 013a4484f061a2b41f052e25c0015203287e63f1, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < 8fa3e9435a13c335efb63fb4f4e77531a0031159, fa6999e326fe7851ecbd572b8cb9be8e930ebf41 ≤ v < a9ae0f6dd45c3ccc1d69363f7aea8af179122730, 5.10 | 7dc306ff7c4d951582adaae65e0aee9fb4968dbe, 447a37a6bef11bfd3645069e380460b11386e2b9, f0831f13c42c1261d449dcee8a035e1c6cd9fcaa, dd25bd9b0f36849808bd7625dcc59dd4c1aeef3e, ecc3b8691c1935f9f3e4eb964ab11e40fdec17f5, 013a4484f061a2b41f052e25c0015203287e63f1, 8fa3e9435a13c335efb63fb4f4e77531a0031159, a9ae0f6dd45c3ccc1d69363f7aea8af179122730 |
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