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.
References
Configurations
No configuration.
History
No history.
Information
Published : 2025-12-09 16:17
Updated : 2026-08-04 10:18
NVD link : CVE-2022-50676
Mitre link : CVE-2022-50676
CVE.ORG link : CVE-2022-50676
JSON object : View
Products Affected
No product.
CWE
No CWE.