CVE-2022-48786

A vulnerability was found in the Linux kernel's vsock subsystem's vsock_stream_connect() function where improper handling of the socket state can lead to the connected table's list being corrupted. This occurs when a signal interrupt occurs and resets the socket's state without removing it from the connected table; the process then attempts the connect() function again, which if successful, can lead to the socket being added a second time to the connected table, corrupting the linked list structure used for managing connected sockets. This vulnerability can potentially lead to memory corruption and system instability.

This issue is fixed in RHEL-9.1 and above

in (rhel-8.7, rhel-8.8, rhel-8.9, rhel-8.10) vsock: remove vsock from connected table when connect is interrupted by a signal
in (rhel-9.1, rhel-9.2, rhel-9.3, rhel-9.4, rhel-9.5) vsock: remove vsock from connected table when connect is interrupted by a signal

Please note that while RHEL-9 kernel-rt still appears as affected, it has been fixed in the same RHSA as RHEL-9 kernel. This is because from RHEL-9.3 onwards, the kernel and kernel-rt fixes are bundled together in a single errata.

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.