CVE-2025-49176

A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.

This vulnerability is rated as an important severity because this flaw exists in the Big Requests extension of the X.Org X server, where the length of client requests is multiplied by 4 before validating against the maximum allowed size. This computation can cause an integer overflow when a sufficiently large length value is provided, resulting in a wrapped-around total length that appears valid to the size check logic, leading to out-of-bounds memory access, successful exploitation can cause denial of service by crashing the server and may permit memory corruption, compromising system integrity and availability.

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 don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.