CVE-2021-28878

Name	CVE-2021-28878
Description	In the standard library in Rust before 1.52.0, the Zip implementation calls __iterator_get_unchecked() more than once for the same index (under certain conditions) when next_back() and next() are used together. This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	986803

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rustc (PTS)	bullseye	1.48.0+dfsg1-2	vulnerable
	bookworm	1.63.0+dfsg1-2	fixed
	trixie	1.85.0+dfsg3-1	fixed
	forky, sid	1.90.0+dfsg1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rustc	source	(unstable)	1.53.0+dfsg1-1			986803

Notes

[bullseye] - rustc <no-dsa> (Minor issue)
[buster] - rustc <no-dsa> (Minor issue)
[stretch] - rustc <no-dsa> (Minor issue)
https://github.com/rust-lang/rust/issues/82291
https://github.com/rust-lang/rust/pull/82292