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CVE-2021-32810— Data race in crossbeam-deque

Quick assessment

Affected
crossbeam-rs crossbeam
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Crossbeam是个人开发者的一个应用于并发编程的工具。 crossbeam-deque存在安全漏洞，该漏洞用于在Rust中编程时构建任务调度程序。

CVSS 9.8 · Critical EPSS 1.91% · P79

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-32810

Vulnerability Information
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Vulnerability Title
Data race in crossbeam-deque
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Crossbeam 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Crossbeam是个人开发者的一个应用于并发编程的工具。 crossbeam-deque存在安全漏洞，该漏洞用于在Rust中编程时构建任务调度程序。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
crossbeam-rs crossbeam < 0.7.4 -

II. Public POCs for CVE-2021-32810

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III. Intelligence Information for CVE-2021-32810

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Vendor Advisories for CVE-2021-32810 (1)

Mailing List Discussions for CVE-2021-32810 (14)

IV. Related Vulnerabilities

Same product: crossbeam
Same vendor: crossbeam-rs
Same weakness: CWE-362

V. Comments for CVE-2021-32810

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