CVE-2022-50676: Linux

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: net: rds: don't hold sock lock when cancelling work from rds_tcp_reset_callbacks() syzbot is reporting lockdep warning at rds_tcp_reset_callbacks() [1], for commit ac3615e7f3cffe2a ("RDS: TCP: Reduce code duplication in rds_tcp_reset_callbacks()") added cancel_delayed_work_sync() into a section protected by lock_sock() without realizing that rds_send_xmit() might call lock_sock(). We don't need to protect cancel_delayed_work_sync() using lock_sock(), for even if rds_{send,recv}_worker() re-queued this work while __flush_work() from cancel_delayed_work_sync() was waiting for this work to complete, retried rds_{send,recv}_worker() is no-op due to the absence of RDS_CONN_UP bit.

Affected products

• Linux Linux: from 4.8, before 4.9.331 (fixed in 4.9.331); from 4.10, before 4.14.296 (fixed in 4.14.296); from 4.15, before 4.19.262 (fixed in 4.19.262); from 4.20, before 5.4.220 (fixed in 5.4.220); from 5.5, before 5.10.150 (fixed in 5.10.150); from 5.11, before 5.15.75 (fixed in 5.15.75); …

Published 2025-12-09. Last modified 2026-08-04.