CVE-2021-3679

Name	CVE-2021-3679
Description	A lack of CPU resource in the Linux kernel tracing module functionality in versions prior to 5.14-rc3 was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2785-1, DLA-2843-1, DSA-4978-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	buster	4.19.249-2	fixed
	buster (security)	4.19.304-1	fixed
	bullseye	5.10.209-2	fixed
	bullseye (security)	5.10.205-2	fixed
	bookworm	6.1.76-1	fixed
	bookworm (security)	6.1.85-1	fixed
	trixie	6.6.15-2	fixed
	sid	6.7.9-2	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	stretch	4.9.290-1	DLA-2843-1
linux	source	buster	4.19.208-1
linux	source	bullseye	5.10.46-5	DSA-4978-1
linux	source	(unstable)	5.14.6-1
linux-4.19	source	stretch	4.19.208-1~deb9u1	DLA-2785-1

https://git.kernel.org/linus/67f0d6d9883c13174669f88adac4f0ee656cc16a