CVE-2021-20291

Name	CVE-2021-20291
Description	A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	988942

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
golang-github-containers-storage (PTS)	bullseye	1.24.8+dfsg1-1+deb11u1	vulnerable
	bookworm	1.43.0+ds1-8	fixed
	sid, trixie	1.56.0+ds1-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
golang-github-containers-storage	source	experimental	1.29.0+ds1-1
golang-github-containers-storage	source	(unstable)	1.34.1+ds1-1			988942

Notes

[bullseye] - golang-github-containers-storage <no-dsa> (Minor issue)
https://github.com/containers/storage/commit/306fcabc964470e4b3b87a43a8f6b7d698209ee1
golang-github-containers-buildah uses golang-github-containers-storage compression support.
docker.io already uses the same library as the fix for golang-github-containers-storage.