Linux Kernel RDS Subsystem Zero-Copy Page Pin Failure Vulnerability

A vulnerability in the Linux kernel's RDS (Reliable Datagram Sockets) subsystem has been addressed. The issue arose when the zero-copy page pinning process failed, leading to an improper handling of the 'op_nents' counter. This mismanagement caused an incorrect number of entries to be freed during the message purge process, potentially leading to memory management issues. The vulnerability affects the Linux kernel stable tree.

Impact

The vulnerability could cause memory management problems by incorrectly freeing pages, which might lead to use-after-free conditions or memory corruption.

Remediation

Users can upgrade to the latest version of the Linux kernel stable tree to address this vulnerability.