El-errata: New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2021-9577)
Synopsis: ELSA-2021-9577 can now be patched using Ksplice
CVEs: CVE-2021-3732
Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2021-9577.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2021-9577.html
INSTALLING THE UPDATES
We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 on
OL6 and OL7 install these updates.
On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.
Alternatively, you can install these updates by running:
# /usr/sbin/uptrack-upgrade -y
DESCRIPTION
* CVE-2021-3732: Information disclosure in OverlayFS when mounting a
filesystem.
A logic flaw in mounting functionality of OverlayFS subsystem could
allow an unprivileged local user with permissions to mount a filesystem
to access hidden files that should not be accessible in the original mount.
An unprivileged local attacker could use this flaw for information
disclosure.
Orabug: 33560431
SUPPORT
Ksplice support is available at ksplice-support_ww@oracle.com.
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New Ksplice updates for UEKR4 4.1.12 on Oracle Linux 6 and 7 has been released.
