| Name | CVE-2026-31628 |
| Description | In the Linux kernel, the following vulnerability has been resolved: x86/CPU: Fix FPDSS on Zen1 Zen1's hardware divider can leave, under certain circumstances, partial results from previous operations. Those results can be leaked by another, attacker thread. Fix that with a chicken bit. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4561-1, DSA-6238-1, DSA-6243-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.251-3 | vulnerable | |
| bookworm | 6.1.159-1 | vulnerable | |
| bookworm (security) | 6.1.170-1 | fixed | |
| trixie | 6.12.73-1 | vulnerable | |
| trixie (security) | 6.12.85-1 | fixed | |
| forky | 6.19.14-1 | fixed | |
| sid | 7.0.3-1 | fixed | |
| linux-6.1 (PTS) | bullseye (security) | 6.1.170-1~deb11u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | bookworm | 6.1.170-1 | DSA-6243-1 | ||
| linux | source | trixie | 6.12.85-1 | DSA-6238-1 | ||
| linux | source | (unstable) | 6.19.13-1 | |||
| linux-6.1 | source | bullseye | 6.1.170-1~deb11u1 | DLA-4561-1 |
https://git.kernel.org/linus/e55d98e7756135f32150b9b8f75d580d0d4b2dd3 (7.1-rc1)
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7053.html
https://roots.ec/blog/fpdss/