CVE-2024-4418 Information

Description

A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method the data pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer’s stack frame was concurrently being reed\ when returning from virNetClientIOEventLoop(). The ‘virtproxyd’ daemon can be used to trigger requests. If libvirt is configured with fine-grained access control this issue in theory allows a user to escape their otherwise limited access. This flaw allows a local unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.

Reference

https://access.redhat.com/security/cve/CVE-2024-4418 https://bugzilla.redhat.com/show_bug.cgi?id=2278616