In the Linux kernel, the following vulnerability has been resolved: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id Use check_add_overflow() to guard against potential integer overflows when adding the binary blob lengths and the size of an asymmetric_key_id structure and return ERR_PTR(-EOVERFLOW) accordingly. This prevents a possible buffer overflow when copying data from potentially malicious X.509 certificate fields that can be arbitrarily large, such as ASN.1 INTEGER serial numbers, issuer names, etc.
Upstream advisory: https://lore.kernel.org/linux-cve-announce/2025122404-CVE-2025-68724-4d3c@gregkh/T
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:13578 https://access.redhat.com/errata/RHSA-2026:13578
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:13577 https://access.redhat.com/errata/RHSA-2026:13577
This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:19569 https://access.redhat.com/errata/RHSA-2026:19569
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:21556 https://access.redhat.com/errata/RHSA-2026:21556