[Ksplice][Ubuntu-Oracle-Updates] New Ksplice updates for Ubuntu OCI kernel (USN-4877-1)

[Oracle Ksplice]

Synopsis: USN-4877-1 can now be patched using Ksplice
CVEs: CVE-2020-36158 CVE-2021-3178

Systems running Ubuntu OCI kernel can now use Ksplice to patch against
the latest Ubuntu Security Notice, USN-4877-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu OCI
kernel 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-2020-36158: Out-of-bounds memory write in wireless mwifiex driver.

A logic error in mwifiex wireless driver may overwrite allocated buffer
space.  A local user could exploit this vulnerability to cause a
denial-of-service or potentially escalate privileges.


* CVE-2021-3178: Path traversal vulnerability in NFSv3 filesystem.

A flaw in the NFSv3 implementation when there is an NFS export of
a subdirectory of a filesystem could lead to a leak of the file handle
for parent directory. A remote attackers could use this flaw to traverse
to other parts of the filesystem and gain more access than expected.

SUPPORT

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