CVE-2025-39773

Name of the Vulnerable Software and Affected Versions: Linux kernel (affected versions not specified)

Description: A flaw exists in the Linux kernel’s bridge networking functionality where a large multicast query interval value can lead to a time overflow within the br multicast send query() function. This overflow can cause a loop, potentially resulting in a soft lockup, specifically observed in the rb consumer process. The issue can be triggered by setting a very large value for the multicast query interval and enabling the multicast querier on a bridge interface.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.