GHSA-2grh-hm3w-w7hv

ghsaUSosv

Race condition in tokio

view advisory published 2021-08-25Licence: CC-BY-4.0

When aborting a task with JoinHandle::abort, the future is dropped in the thread calling abort if the task is not currently being executed. This is incorrect for tasks spawned on a LocalSet. This can easily result in race conditions as many projects use Rc or RefCell in their Tokio tasks for better performance.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2021-38191US	medium5.9	0.83% (58th)	—	2021-08-08
An issue was discovered in the tokio crate before 1.8.1 for Rust. Upon a JoinHandle::abort, a Task may be dropped in the wrong thread.

references

External citations — patches, advisories, analysis.

https://github.com/tokio-rs/tokioPACKAGE
https://github.com/tokio-rs/tokio/issues/3929WEB
https://nvd.nist.gov/vuln/detail/CVE-2021-38191ADVISORY
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/tokio/RUSTSEC-2021-0072.mdWEB
https://rustsec.org/advisories/RUSTSEC-2021-0072.htmlWEB

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