| Name | CVE-2020-10766 |
| Description | A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2323-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | fixed |
| bullseye (security) | 5.10.234-1 | fixed | |
| bookworm | 6.1.129-1 | fixed | |
| bookworm (security) | 6.1.128-1 | fixed | |
| sid, trixie | 6.12.20-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | stretch | 4.9.228-1 | |||
| linux | source | buster | 4.19.131-1 | |||
| linux | source | (unstable) | 5.7.6-1 | |||
| linux-4.19 | source | stretch | 4.19.132-1~deb9u2 | DLA-2323-1 |
https://www.openwall.com/lists/oss-security/2020/06/10/1
https://git.kernel.org/linus/dbbe2ad02e9df26e372f38cc3e70dab9222c832e