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CVE-2020-15254

Published: 22 October 2020

Crossbeam 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.

Notes

AuthorNote
tyhicks
mozjs contains a copy of the SpiderMonkey JavaScript engine
Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
firefox
Launchpad, Ubuntu, Debian
bionic
Released (82.0+build2-0ubuntu0.18.04.1)
focal
Released (82.0+build2-0ubuntu0.20.04.1)
groovy
Released (82.0+build2-0ubuntu0.20.10.1)
hirsute
Released (82.0.2+build1-0ubuntu1)
impish
Released (82.0.2+build1-0ubuntu1)
jammy
Released (82.0.2+build1-0ubuntu1)
precise Does not exist

trusty Does not exist

upstream
Released (82)
xenial
Released (82.0+build2-0ubuntu0.16.04.5)
mozjs38
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs52
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs60
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mozjs68
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

groovy Ignored
(reached end-of-life)
hirsute Does not exist

impish Does not exist

jammy Does not exist

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

focal Needs triage

groovy Does not exist

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

precise Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist