CVE-2026-35549

A flaw was found in MariaDB Server. When the caching_sha2_password authentication plugin is installed and used by some user accounts, a low-privileged authenticated user can send a specially crafted large packet. This can cause the server to crash due to an issue with the sha256_crypt_r function's use of alloca, a function for allocating memory on the stack. This vulnerability leads to a Denial of Service (DoS), making the database server unavailable.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.