[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2022-9014)

Errata Announcements for Oracle Linux el-errata at oss.oracle.com
Thu Jan 13 01:17:33 UTC 2022

Synopsis: ELSA-2022-9014 can now be patched using Ksplice
CVEs: CVE-2021-0920 CVE-2021-1048 CVE-2021-4083 CVE-2021-4155

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2022-9014.
More information about this errata can be found at


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


* CVE-2021-4155: Data leak in XFS filesystem.

The XFS filesystem does not correctly initialize certain data blocks. This
could allow data leaks to unprivileged users.

Orabug: 33703630

* CVE-2021-1048: Use-after-free in the filesystem event poll mechanism.

A race condition in the filesystem event poll mechanism can lead to a
use-after-free.  A local unprivileged user could use this flaw to cause a
denial-of-service or potentially escalate privileges.

Orabug: 33679854

* CVE-2021-0920, CVE-2021-4083: Privilege escalation in BSD Unix domain 

Lack of synchronization in BSD Unix domain sockets module could result 
in a use
after free error. A local user could use this flaw to cause 
or privileges escalation.

Orabug: 33679806


Ksplice support is available at ksplice-support_ww at oracle.com.

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