[USN-4753-1] Linux kernel (OEM) vulnerability

Steve Beattie steve.beattie at canonical.com
Thu Feb 25 07:35:52 UTC 2021

Ubuntu Security Notice USN-4753-1
February 25, 2021

linux-oem-5.10 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS


The system could allow unintended access to data in some environments.

Software Description:
- linux-oem-5.10: Linux kernel for OEM systems


It was discovered that the LIO SCSI target implementation in the Linux
kernel performed insufficient identifier checking in certain XCOPY
requests. An attacker with access to at least one LUN in a multiple
backstore environment could use this to expose sensitive information or
modify data. (CVE-2020-28374)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
  linux-image-5.10.0-1014-oem     5.10.0-1014.15

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

  CVE-2020-28374, CVE-2021-3178

Package Information:

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