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

CVE-2026-68453 affects the Linux kernel, s390/zcrypt: a buffer over-read/under-run was possible due to insufficient validation of user-controlled length fields in CCA token structures (cca_check_sec*token() and related key handling). The fix enforces that the key buffer length is at least the tok...

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-2026-68452 vulnerability affects the Linux kernel s390/zcrypt component, where insufficient validation of the length for CCA AES cipher key requests allowed an attacker to craft a key token that could trigger a buffer overflow. The root cause is cca_cipher2protkey() deriving the CPRB copy...

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...

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...

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-2026-57920

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 s390 zcrypt module. The cca_ecc2protkey() function derives the CPRB copy length from the key token’s length field and now rejects requests where the token length exceeds the available space in the parameter block, addressing a memory-corruption ri...

PT-2026-71615

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Fix buffer over-read in cca cipher2protkey Add validation of both the actual key buffer size and token length fields in all the cca check sectoken functions. Additionally check in cca gencipherkey for possible...

PT-2026-71614

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...

UBUNTU-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...

UBUNTU-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...

UBUNTU-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...

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...