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CVE-2021-32810

Published: 2 August 2021

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.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic
Released (93.0+build1-0ubuntu0.18.04.1)
focal
Released (93.0+build1-0ubuntu0.20.04.1)
hirsute
Released (93.0+build1-0ubuntu0.21.04.1)
impish
Released (93.0+build1-0ubuntu2)
jammy
Released (93.0+build1-0ubuntu2)
kinetic
Released (93.0+build1-0ubuntu2)
trusty Does not exist

upstream Needs triage

xenial Needs triage

rust-crossbeam-deque
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

hirsute Ignored
(reached end-of-life)
impish Ignored
(reached end-of-life)
jammy Needs triage

kinetic Needs triage

trusty Does not exist

upstream
Released (0.7.4-1)
xenial Ignored
(out of standard support)