Files
advisory-db/crates/crossbeam/RUSTSEC-2018-0009.md
Tony Arcieri ac125ee29a Translate database into V3 advisory format (#420)
As proposed in #240 and tracked in #414, this PR translates all
advisories into the new "V3" advisory format, which is based on Markdown
with leading TOML front matter.

This format makes it easier to see rendered Markdown syntax
descriptions, whether rendered by an IDE or GitHub. This should help
with both crafting advisories initially as well as review, and ideally
encourages more lengthy descriptions.

Support for this format shipped in `cargo-audit` v0.12.0 on
May 6th, 2020.
2020-10-01 18:29:11 -07:00

641 B

[advisory]
id = "RUSTSEC-2018-0009"
package = "crossbeam"
aliases = ["CVE-2018-20996"]
date = "2018-12-09"
keywords = ["concurrency", "memory-management", "memory-corruption"]
url = "https://github.com/crossbeam-rs/crossbeam-epoch/issues/82"

[versions]
patched = [">= 0.4.1"]
unaffected = ["< 0.4.0"]

MsQueue and SegQueue suffer from double-free

Even if an element is popped from a queue, crossbeam would run its destructor inside the epoch-based garbage collector. This is a source of double frees.

The flaw was corrected by wrapping elements inside queues in a ManuallyDrop.

Thanks to @c0gent for reporting the issue.