| 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 code/issues, web search, more) |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | stretch | 4.9.228-1 | vulnerable |
| stretch (security) | 4.9.303-1 | vulnerable | |
| buster | 4.19.235-1 | fixed | |
| buster (security) | 4.19.232-1 | vulnerable | |
| bullseye | 5.10.106-1 | fixed | |
| bullseye (security) | 5.10.113-1 | fixed | |
| bookworm | 5.17.3-1 | fixed | |
| sid | 5.17.6-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | buster | 4.19.235-1 | |||
| linux | source | bullseye | 5.10.106-1 | |||
| linux | source | (unstable) | 5.16.14-1 |
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