CVE-2020-15254

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2020-15254
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-10-16 17:15:00 UTC
Updated2022-08-05 19:30:00 UTC
DescriptionCrossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4.

Risk And Classification

Problem Types: CWE-401

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Crossbeam Project Crossbeam All All All All
Application Crossbeam Project Crossbeam All All All All

References

ReferenceSourceLinkTags
Add advisory for UB in crossbeam-channel 0.4.3 by taiki-e · Pull Request #425 · RustSec/advisory-db · GitHub MISC github.com Patch, Third Party Advisory
Memory Leak in crossbeam-queue ArrayQueue? (Latest git only, ver0.2.3 is not effected) · Issue #539 · crossbeam-rs/crossbeam · GitHub MISC github.com Exploit, Third Party Advisory
Use Box<[T]> instead of Vec<T> to initialize and drop ArrayQueue by caelunshun · Pull Request #533 · crossbeam-rs/crossbeam · GitHub MISC github.com Exploit, Patch, Third Party Advisory
Undefined Behavior in bounded channel · Advisory · crossbeam-rs/crossbeam · GitHub CONFIRM github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500955 Alpine Linux Security Update for firefox
  • 503840 Alpine Linux Security Update for firefox
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report