CVE-2022-23960

NameCVE-2022-23960
DescriptionCertain 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.303-1vulnerable
buster4.19.235-1fixed
buster (security)4.19.232-1vulnerable
bullseye5.10.106-1fixed
bullseye (security)5.10.113-1fixed
bookworm5.17.3-1fixed
sid5.17.6-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcebuster4.19.235-1
linuxsourcebullseye5.10.106-1
linuxsource(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

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