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Low RLSA-2021:4404 1 CVE

Low: kexec-tools security, bug fix, and enhancement update

Published Nov 9, 2021 · Updated Feb 4, 2026

Summary

The kexec-tools packages contain the /sbin/kexec binary and utilities that together form the user-space component of the kernel's kexec feature. The /sbin/kexec binary facilitates a new kernel to boot using the kernel's kexec feature either on a normal or a panic reboot. The kexec fastboot mechanism allows booting a Linux kernel from the context of an already running kernel.

Security Fix(es):

* kexec-tools: incorrect permissions on kdump dmesg file (CVE-2021-20269)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 kexec-tools 0:2.0.20-57.el8

Vulnerabilities 1

  • Unscored —

    A flaw was found in the permissions of a log file created by kexec-tools. This flaw allows a local unprivileged user to…

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1892558
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1915819
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1918499
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1934261
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1965267