CVE-2021-47590

A vulnerability was found in the Linux kernel's mptcp component in the __mptcp_push_pending() function, where a deadlock can occur when calling mptcp_flush_join_list() with the subflow socket lock held. This happens if the synchronization function mptcp_sockopt_sync_all() is invoked, causing the system to hang due to competing locks, this vulnerability can lead to significant disruptions in MultiPath TCP operations.

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.