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GHSA-pqqp-xmhj-wgcw

crossbeam-deque Data Race before v0.7.4 and v0.8.1

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-32810

Packages

EcosystemPackageAffectedFixed in
crates.io crossbeam-deque < 0.7.4 0.7.4
crates.io crossbeam-deque >= 0.8.0, < 0.8.1 0.8.1

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact In the affected version of this crate, the result of the race condition is that one or more tasks in the worker queue can be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this can cause double free and a memory leak. If not, this still can cause a logical bug. Crates using `Stealer::steal`, `Stealer::steal_batch`, or `Stealer::steal_batch_and_pop` are affected by this issue. ### Patches This has been fixed in crossbeam-deque 0.8.1 and 0.7.4. ### Credits This issue was reported and fixed by Maor Kleinberger. ### License This advisory is in the public domain.

References

External links from the advisory. They lead to third-party sites.