| Name | CVE-2021-20269 |
| Description | A flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to read this file and leak kernel internal information from a previous panic. The highest threat from this vulnerability is to confidentiality. This flaw affects kexec-tools shipped by Fedora versions prior to 2.0.21-8 and RHEL versions prior to 2.0.20-47. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| kexec-tools (PTS) | jessie | 1:2.0.7-5 | fixed |
| stretch | 1:2.0.14-1 | fixed |
| buster | 1:2.0.18-1 | fixed |
| bullseye | 1:2.0.20-2.1 | fixed |
| bookworm | 1:2.0.25-3 | fixed |
| sid, trixie | 1:2.0.27-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| kexec-tools | source | (unstable) | (not affected) | | | |
Notes
- kexec-tools <not-affected> (Vulnerable code not present, Fedora/RedHat specific code addition; cf. bug #985105)
https://www.openwall.com/lists/oss-security/2021/03/11/2
https://src.fedoraproject.org/rpms/kexec-tools/c/91c802ff526a0aa0618f6d5c282a9b9b8e41bff8
[jessie] - kexec-tools <no-dsa> (Minor issue)