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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 Severity Score

9.8

Score breakdown

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)

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H