Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

RUSTSEC-2021-0124: Data race when sending and receiving after closing a oneshot channel #353

Open
github-actions bot opened this issue Nov 17, 2021 · 0 comments

Comments

@github-actions
Copy link

Data race when sending and receiving after closing a oneshot channel

Details
Package tokio
Version 0.3.7
URL tokio-rs/tokio#4225
Date 2021-11-16
Patched versions >=1.8.4, <1.9.0,>=1.13.1
Unaffected versions <0.1.14

If a tokio::sync::oneshot channel is closed (via the
oneshot::Receiver::close method), a data race may occur if the
oneshot::Sender::send method is called while the corresponding
oneshot::Receiver is awaited or calling try_recv.

When these methods are called concurrently on a closed channel, the two halves
of the channel can concurrently access a shared memory location, resulting in a
data race. This has been observed to cause memory corruption.

Note that the race only occurs when both halves of the channel are used
after the Receiver half has called close. Code where close is not used, or where the
Receiver is not awaited and try_recv is not called after calling close,
is not affected.

See tokio#4225 for more details.

See advisory page for additional details.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

0 participants