| Name | CVE-2022-29900 |
| Description | Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions. |
| 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-3102-1, DSA-5184-1, DSA-5207-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.282-1 | vulnerable | |
| bullseye | 5.10.178-3 | fixed | |
| bullseye (security) | 5.10.179-1 | fixed | |
| bookworm, sid | 6.1.27-1 | fixed | |
| linux-5.10 (PTS) | buster (security) | 5.10.179-1~deb10u1 | fixed |
| xen (PTS) | buster, buster (security) | 4.11.4+107-gef32c7afa2-1 | vulnerable |
| bullseye (security), bullseye | 4.14.5+94-ge49571868d-1 | fixed | |
| bookworm, sid | 4.17.1+2-gb773c48e36-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | bullseye | 5.10.136-1 | DSA-5207-1 | ||
| linux | source | (unstable) | 5.18.14-1 | |||
| linux-5.10 | source | buster | 5.10.136-1~deb10u1 | DLA-3102-1 | ||
| xen | source | buster | (unfixed) | end-of-life | ||
| xen | source | bullseye | 4.14.5+24-g87d90d511c-1 | DSA-5184-1 | ||
| xen | source | (unstable) | 4.16.2-1 |
[buster] - linux <ignored> (Mitigation is too invasive to backport)
[buster] - xen <end-of-life> (DSA 4677-1)
https://comsec.ethz.ch/research/microarch/retbleed/
https://comsec.ethz.ch/wp-content/files/retbleed_sec22.pdf
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1037
https://xenbits.xen.org/xsa/advisory-407.html