CVE-2026-68451

A flaw was found in the Linux kernel's s390 zcrypt module. The ccaecc2protkey function, responsible for handling Common Cryptographic Architecture CCA Elliptic Curve Cryptography ECC private key requests, does not properly validate the length of the key token. This allows a local attacker to...

CVE-2026-68453

A flaw was found in the Linux kernel's s390/zcrypt component. This vulnerability arises from insufficient validation of user-controlled length fields within the Common Cryptographic Architecture CCA token structures. An attacker could manipulate these fields to cause a buffer over-read or...

CVE-2026-68453

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix buffer over-read in ccacipher2protkey Add validation of both the actual key buffer size and token length fields in all the ccachecksectoken functions. Additionally check in ccagencipherkey for possible underflow...

CVE-2026-68452

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests ccacipher2protkey 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...

CVE-2026-68453

The CVE-2026-68453 entry describes a Linux kernel fix for s390/zcrypt where buffer over-read could occur in cca_cipher2protkey due to unvalidated user-controlled len fields in CCA token structures. The fix adds validation of both the actual key buffer size and token length in all cca_check_sec*to...

CVE-2026-68453 s390/zcrypt: Fix buffer over-read in cca_cipher2protkey

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix buffer over-read in ccacipher2protkey Add validation of both the actual key buffer size and token length fields in all the ccachecksectoken functions. Additionally check in ccagencipherkey for possible underflow...

EUVD-2026-57922

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix buffer over-read in ccacipher2protkey Add validation of both the actual key buffer size and token length fields in all the ccachecksectoken functions. Additionally check in ccagencipherkey for possible underflow...

CVE-2026-68452

The CVE concerns the Linux kernel on the s390/zcrypt path, specifically the CCA AES cipher key request handling. The vulnerability stemmed from cca_cipher2protkey() deriving the CPRB copy length from the token’s length field without bounds checks. The fix rejects the request early when the token ...

CVE-2026-68452

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests ccacipher2protkey 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...

CVE-2026-68452 s390/zcrypt: Validate length for CCA AES cipher key requests

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests ccacipher2protkey 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...

EUVD-2026-57921

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA AES cipher key requests ccacipher2protkey 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...

EUVD-2026-57920

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA ECC private key requests ccaecc2protkey 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 excee...

CVE-2026-68451

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Validate length for CCA ECC private key requests ccaecc2protkey 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 excee...

CVE-2026-68451

The CVE-2026-68451 issue affects the Linux kernel on the s390/zcrypt path. The vulnerable component is cca_ecc2protkey(), which derived the CPRB copy length directly from the length field in the key token. The root cause was not validating that the token length fits within the available space of ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: s390/zcrypt: Fixed a memory leak when CCA cards are used as accelerators. Tests revealed that a memory leak occurs when CCA cards are used as accelerators for clear-key RSA requests ME and CRT. With the latest modifications to...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Do not leak memory if devsetname fails. When devsetname fails, zcdncreate does not free the newly allocated resources. Fix this issue...

SUSE CVE-2026-31746

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix memory leak with CCA cards used as accelerator Tests showed that there is a memory leak if CCA cards are used as accelerator for clear key RSA requests ME and CRT. With the last rework for the memory allocation t...

Linux Distros Unpatched Vulnerability : CVE-2026-31746

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - s390/zcrypt: Fix memory leak with CCA cards used as accelerator Tests showed that there is a memory leak if CCA cards are used as accelerator for clear key RSA...

CVE-2026-31746

A flaw was found in the Linux kernel's s390/zcrypt component. When Common Cryptographic Architecture CCA cards are used as accelerators for clear key RSA requests, a memory leak occurs due to an unreleased memory allocation. Over time, this memory leak can lead to a denial of service DoS conditio...

CVE-2026-31746

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix memory leak with CCA cards used as accelerator Tests showed that there is a memory leak if CCA cards are used as accelerator for clear key RSA requests ME and CRT. With the last rework for the memory allocation t...