CVE-2022-23960

Name	CVE-2022-23960
Description	Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches. Then, cache allocation can allow the attacker to obtain sensitive information.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-3065-1, DSA-5173-1

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)	4.19.260-1	fixed
	bullseye	5.10.140-1	fixed
	bullseye (security)	5.10.149-2	fixed
	bookworm	6.0.10-2	fixed
	sid	6.0.12-1	fixed

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

Package	Type	Release	Fixed Version	Origin
linux	source	stretch	4.9.320-2	DLA-3065-1
linux	source	buster	4.19.249-2	DSA-5173-1
linux	source	bullseye	5.10.106-1
linux	source	(unstable)	5.16.14-1

Notes

https://www.vusec.net/projects/bhi-spectre-bhb/
https://developer.arm.com/support/arm-security-updates/speculative-processor-vulnerability/spectre-bhb
https://xenbits.xen.org/xsa/advisory-398.html