CVE-2025-22058

A memory overflow vulnerability exists within the Linux kernel's networking subsystem. Specifically, an application can set the SO_RCVBUF socket option to its maximum value (INT_MAX), which triggers an integer overflow within the udp_rmem_release() function during socket closure. The udp_destruct_common() purges its receive queue and sums up skb->truesize in the queue. This total is calculated and stored in a local unsigned integer variable. The total size is then passed to udp_rmem_release() to adjust memory accounting. Due to the function taking a signed integer argument, the total size can wrap around, causing a memory overflow condition, potentially leading to system instability.

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.