CVE-2020-27171

Name	CVE-2020-27171
Description	An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-10d2bb2e6b1d.
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-2610-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
linux (PTS)	bullseye	5.10.223-1	fixed
	bullseye (security)	5.10.226-1	fixed
	bookworm	6.1.123-1	fixed
	bookworm (security)	6.1.119-1	fixed
	trixie	6.12.10-1	fixed
	sid	6.12.11-1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	stretch	(not affected)
linux	source	buster	4.19.181-1
linux	source	(unstable)	5.10.24-1
linux-4.19	source	stretch	4.19.181-1~deb9u1	DLA-2610-1

[stretch] - linux <not-affected> (Vulnerability introduced later)
https://www.openwall.com/lists/oss-security/2021/03/19/3