CVE-2022-50676
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 1.0% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.0% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 1.0% · EPSS, next 30 days
- Record status
- Deferred
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-50676.md and follow it. Check whether this project is affected by CVE-2022-50676. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- https://git.kernel.org/stable/c/2425007c0967a7c04b0dee7cce05ecf0ca869ad1
- https://git.kernel.org/stable/c/30bfa5aa7228eb1e67663d67e553627e572cc717
- https://git.kernel.org/stable/c/360aa7219285fac63dab99706a16f2daf3222abe
- https://git.kernel.org/stable/c/5d2ba255e93211e541373469dffbda7c99dfa0e5
- https://git.kernel.org/stable/c/a91b750fd6629354460282bbf5146c01b05c4859
- https://git.kernel.org/stable/c/afe7053c390fe8ff27d0c2ceaece5625283044ba
- https://git.kernel.org/stable/c/c380c28ab9b15fc53565909c814f6dd3e7f77c4b
- https://git.kernel.org/stable/c/da349221c4d2d4ac5f606c1c3b36d4ef0b3e6a0c
- https://git.kernel.org/stable/c/e3cb25d3ad08f5dbd53ce2b31720cad529944322