Description
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.
Product status
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before 5d2ba255e93211e541373469dffbda7c99dfa0e5
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before 2425007c0967a7c04b0dee7cce05ecf0ca869ad1
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before e3cb25d3ad08f5dbd53ce2b31720cad529944322
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before 360aa7219285fac63dab99706a16f2daf3222abe
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before 30bfa5aa7228eb1e67663d67e553627e572cc717
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before c380c28ab9b15fc53565909c814f6dd3e7f77c4b
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before afe7053c390fe8ff27d0c2ceaece5625283044ba
ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (git) before a91b750fd6629354460282bbf5146c01b05c4859
4.8
Any version before 4.8
4.9.331 (semver)
4.14.296 (semver)
4.19.262 (semver)
5.4.220 (semver)
5.10.150 (semver)
5.15.75 (semver)
5.19.17 (semver)
6.0.3 (semver)
6.1 (original_commit_for_fix)
References
git.kernel.org/...c/5d2ba255e93211e541373469dffbda7c99dfa0e5
git.kernel.org/...c/2425007c0967a7c04b0dee7cce05ecf0ca869ad1
git.kernel.org/...c/e3cb25d3ad08f5dbd53ce2b31720cad529944322
git.kernel.org/...c/360aa7219285fac63dab99706a16f2daf3222abe
git.kernel.org/...c/da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c
git.kernel.org/...c/30bfa5aa7228eb1e67663d67e553627e572cc717
git.kernel.org/...c/c380c28ab9b15fc53565909c814f6dd3e7f77c4b
git.kernel.org/...c/afe7053c390fe8ff27d0c2ceaece5625283044ba
git.kernel.org/...c/a91b750fd6629354460282bbf5146c01b05c4859
