| 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 code/issues, web search, more) |
| References | DLA-3102-1, DSA-5184-1, DSA-5207-1, ELA-676-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| linux (PTS) | jessie, jessie (lts) | 3.16.84-1 | vulnerable |
| stretch (security) | 4.9.320-2 | vulnerable |
| stretch (lts), stretch | 4.9.320-3 | vulnerable |
| buster | 4.19.249-2 | vulnerable |
| buster (security) | 4.19.269-1 | vulnerable |
| bullseye | 5.10.158-2 | fixed |
| bullseye (security) | 5.10.162-1 | fixed |
| bookworm | 6.1.15-1 | fixed |
| sid | 6.1.20-1 | fixed |
| linux-5.10 (PTS) | stretch (lts), stretch | 5.10.162-1~deb9u1 | fixed |
| buster (security) | 5.10.162-1~deb10u1 | fixed |
| xen (PTS) | jessie, jessie (lts) | 4.4.4lts5-0+deb8u1 | vulnerable |
| stretch (security), stretch (lts), stretch | 4.8.5.final+shim4.10.4-1+deb9u12 | vulnerable |
| buster, buster (security) | 4.11.4+107-gef32c7afa2-1 | vulnerable |
| bullseye (security), bullseye | 4.14.5+86-g1c354767d5-1 | fixed |
| bookworm, sid | 4.17.0+46-gaaf74a532c-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 | jessie | (unfixed) | end-of-life | | |
| linux | source | stretch | (unfixed) | end-of-life | | |
| linux | source | bullseye | 5.10.136-1 | | DSA-5207-1 | |
| linux | source | (unstable) | 5.18.14-1 | | | |
| linux-5.10 | source | stretch | 5.10.136-1~deb9u1 | | ELA-676-1 | |
| linux-5.10 | source | buster | 5.10.136-1~deb10u1 | | DLA-3102-1 | |
| xen | source | jessie | (unfixed) | end-of-life | | |
| xen | source | stretch | (unfixed) | end-of-life | | |
| 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 | | | |
Notes
[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