cve.bz

CVE-2021-32810

9.8 criticalEPSS 1.9%

Critical (9.8). EPSS 1.9% chance of exploitation in the next 30 days. Fixed in crossbeam-deque 0.7.4, 0.8.1.

crossbeam-deque is a package of work-stealing deques for building task schedulers when programming in Rust. In versions prior to 0.7.4 and 0.8.0, 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. This has been fixed in crossbeam-deque 0.8.1 and 0.7.4.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.9% chance of exploitation in the next 30 days; higher than 79% of CVEs (scores of 2026-10-31)
CWE
CWE-362
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-pqqp-xmhj-wgcwcrates.iocrossbeam-deque<0.7.40.7.4
GHSA-pqqp-xmhj-wgcwcrates.iocrossbeam-deque>=0.8.0 <0.8.10.8.1
RUSTSEC-2021-0093crates.iocrossbeam-deque>=0.0.0-0 <0.7.4
>=0.8.0 <0.8.1		0.7.4, 0.8.1

References

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