CVE-2021-20269

NameCVE-2021-20269
DescriptionA 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.
SourceCVE (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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
kexec-tools (PTS)buster1:2.0.18-1fixed
bullseye1:2.0.20-2.1fixed
bookworm, sid1:2.0.24-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
kexec-toolssource(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

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