HistoryEdit

RUSTSEC-2021-0093

Data race in crossbeam-deque

Issued
Package
crossbeam-deque (crates.io)
Type
Vulnerability
Categories
Aliases
Details
https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-pqqp-xmhj-wgcw
CVSS Score
9.8 CRITICAL
CVSS Details
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Patched
  • >=0.7.4, <0.8.0
  • >=0.8.1

Description

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.

Credits to @kmaork for discovering, reporting and fixing the bug.