CVE-2026-80545

A flaw was found in the Linux kernel's s390/zcrypt component. This vulnerability stems from insufficient input validation in the xcrbmsgtotype6ep11cprbmsgx function when handling EP11 Cryptographic Coprocessor Request Block CPRB messages. A local attacker could exploit this by crafting a maliciou...

EUVD-2026-66459

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing The zcryptmsgtype6sendep11cprb function uses fragile struct overlays to access and modify the domain field in the EP11 CPRB payload, creating maintainability and...

EUVD-2026-66460

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Improve EP11 CPRB length and overflow checks The xcrbmsgtotype6ep11cprbmsgx function lacks proper input validation, creating security vulnerabilities: 1. Missing minimum size validation: The ep11cprb structure and...

CVE-2026-80544

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing The zcryptmsgtype6sendep11cprb function uses fragile struct overlays to access and modify the domain field in the EP11 CPRB payload, creating maintainability and...

CVE-2026-80545

CVE-2026-80545 affects the Linux kernel's s390 zcrypt subsystem, specifically the xcrb_msg_to_type6_ep11cprb_msgx() function. The function copies the ep11_cprb structure and payload fields from userspace without verifying sufficient buffer length, and a CEIL4 arithmetic overflow can bypass size c...

CVE-2026-80545 s390/zcrypt: Improve EP11 CPRB length and overflow checks

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Improve EP11 CPRB length and overflow checks The xcrbmsgtotype6ep11cprbmsgx function lacks proper input validation, creating security vulnerabilities: 1. Missing minimum size validation: The ep11cprb structure and...

CVE-2026-80544 s390/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: Improve EP11 CPRB domain handling with ASN.1 parsing The zcryptmsgtype6sendep11cprb function uses fragile struct overlays to access and modify the domain field in the EP11 CPRB payload, creating maintainability and...

CVE-2026-80544

CVE-2026-80544 affects the Linux kernel s390/zcrypt subsystem, specifically the zcrypt_msgtype6_send_ep11_cprb() function. The vulnerability arises from fragile struct overlays used to read and modify the domain field in the EP11 CPRB payload, which assume a fixed structure without validating the...