Search: CVE-2026-53365

A vulnerability in the Linux kernel's vsock/virtio zerocopy implementation was fixed. The issue involved improper handling of zerocopy completion for large messages fragmented into multiple skbs, leading to pinned user pages leaking without completion notification. This could cause resource exhaustion due to unreleased pinned pages. The fix ensures proper allocation and reference counting of zerocopy user arguments for all skbs in a send loop, preventing leaks.