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List: ubuntu-security-announce
Subject: [USN-4694-1] Linux kernel vulnerability
From: Steve Beattie <steve.beattie () canonical ! com>
Date: 2021-01-15 0:18:49
Message-ID: 20210115001849.GL4425 () nxnw ! org
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==========================================================================
Ubuntu Security Notice USN-4694-1
January 14, 2021
linux, linux-hwe, linux-hwe-5.4, linux-hwe-5.8, linux-lts-xenial
vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 ESM
Summary:
The system could allow unintended access to data in some environments.
Software Description:
- linux: Linux kernel
- linux-hwe-5.8: Linux hardware enablement (HWE) kernel
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-hwe: Linux hardware enablement (HWE) kernel
- linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty
Details:
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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.10:
linux-image-5.8.0-38-generic 5.8.0-38.43
linux-image-5.8.0-38-generic-64k 5.8.0-38.43
linux-image-5.8.0-38-generic-lpae 5.8.0-38.43
linux-image-5.8.0-38-lowlatency 5.8.0-38.43
linux-image-generic 5.8.0.38.42
linux-image-generic-64k 5.8.0.38.42
linux-image-generic-lpae 5.8.0.38.42
linux-image-lowlatency 5.8.0.38.42
linux-image-virtual 5.8.0.38.42
Ubuntu 20.04 LTS:
linux-image-5.4.0-62-generic 5.4.0-62.70
linux-image-5.4.0-62-generic-lpae 5.4.0-62.70
linux-image-5.4.0-62-lowlatency 5.4.0-62.70
linux-image-5.8.0-38-generic 5.8.0-38.43~20.04.1
linux-image-5.8.0-38-generic-lpae 5.8.0-38.43~20.04.1
linux-image-5.8.0-38-lowlatency 5.8.0-38.43~20.04.1
linux-image-generic 5.4.0.62.65
linux-image-generic-hwe-20.04 5.8.0.38.43~20.04.23
linux-image-generic-lpae 5.4.0.62.65
linux-image-generic-lpae-hwe-20.04 5.8.0.38.43~20.04.23
linux-image-lowlatency 5.4.0.62.65
linux-image-lowlatency-hwe-20.04 5.8.0.38.43~20.04.23
linux-image-oem 5.4.0.62.65
linux-image-oem-osp1 5.4.0.62.65
linux-image-virtual 5.4.0.62.65
linux-image-virtual-hwe-20.04 5.8.0.38.43~20.04.23
Ubuntu 18.04 LTS:
linux-image-4.15.0-132-generic 4.15.0-132.136
linux-image-4.15.0-132-generic-lpae 4.15.0-132.136
linux-image-4.15.0-132-lowlatency 4.15.0-132.136
linux-image-5.4.0-62-generic 5.4.0-62.70~18.04.1
linux-image-5.4.0-62-generic-lpae 5.4.0-62.70~18.04.1
linux-image-5.4.0-62-lowlatency 5.4.0-62.70~18.04.1
linux-image-generic 4.15.0.132.119
linux-image-generic-hwe-18.04 5.4.0.62.70~18.04.57
linux-image-generic-lpae 4.15.0.132.119
linux-image-generic-lpae-hwe-18.04 5.4.0.62.70~18.04.57
linux-image-lowlatency 4.15.0.132.119
linux-image-lowlatency-hwe-18.04 5.4.0.62.70~18.04.57
linux-image-oem 5.4.0.62.70~18.04.57
linux-image-oem-osp1 5.4.0.62.70~18.04.57
linux-image-powerpc-e500mc 4.15.0.132.119
linux-image-powerpc-smp 4.15.0.132.119
linux-image-powerpc64-emb 4.15.0.132.119
linux-image-powerpc64-smp 4.15.0.132.119
linux-image-snapdragon-hwe-18.04 5.4.0.62.70~18.04.57
linux-image-virtual 4.15.0.132.119
linux-image-virtual-hwe-18.04 5.4.0.62.70~18.04.57
Ubuntu 16.04 LTS:
linux-image-4.15.0-132-generic 4.15.0-132.136~16.04.1
linux-image-4.15.0-132-generic-lpae 4.15.0-132.136~16.04.1
linux-image-4.15.0-132-lowlatency 4.15.0-132.136~16.04.1
linux-image-4.4.0-200-generic 4.4.0-200.232
linux-image-4.4.0-200-generic-lpae 4.4.0-200.232
linux-image-4.4.0-200-lowlatency 4.4.0-200.232
linux-image-4.4.0-200-powerpc-e500mc 4.4.0-200.232
linux-image-4.4.0-200-powerpc-smp 4.4.0-200.232
linux-image-4.4.0-200-powerpc64-emb 4.4.0-200.232
linux-image-4.4.0-200-powerpc64-smp 4.4.0-200.232
linux-image-generic 4.4.0.200.206
linux-image-generic-hwe-16.04 4.15.0.132.130
linux-image-generic-lpae 4.4.0.200.206
linux-image-generic-lpae-hwe-16.04 4.15.0.132.130
linux-image-lowlatency 4.4.0.200.206
linux-image-lowlatency-hwe-16.04 4.15.0.132.130
linux-image-oem 4.15.0.132.130
linux-image-powerpc-e500mc 4.4.0.200.206
linux-image-powerpc-smp 4.4.0.200.206
linux-image-powerpc64-emb 4.4.0.200.206
linux-image-powerpc64-smp 4.4.0.200.206
linux-image-virtual 4.4.0.200.206
linux-image-virtual-hwe-16.04 4.15.0.132.130
Ubuntu 14.04 ESM:
linux-image-4.4.0-200-generic 4.4.0-200.232~14.04.1
linux-image-4.4.0-200-generic-lpae 4.4.0-200.232~14.04.1
linux-image-4.4.0-200-lowlatency 4.4.0-200.232~14.04.1
linux-image-4.4.0-200-powerpc-e500mc 4.4.0-200.232~14.04.1
linux-image-4.4.0-200-powerpc-smp 4.4.0-200.232~14.04.1
linux-image-4.4.0-200-powerpc64-emb 4.4.0-200.232~14.04.1
linux-image-4.4.0-200-powerpc64-smp 4.4.0-200.232~14.04.1
linux-image-generic-lpae-lts-xenial 4.4.0.200.175
linux-image-generic-lts-xenial 4.4.0.200.175
linux-image-lowlatency-lts-xenial 4.4.0.200.175
linux-image-powerpc-e500mc-lts-xenial 4.4.0.200.175
linux-image-powerpc-smp-lts-xenial 4.4.0.200.175
linux-image-powerpc64-emb-lts-xenial 4.4.0.200.175
linux-image-powerpc64-smp-lts-xenial 4.4.0.200.175
linux-image-virtual-lts-xenial 4.4.0.200.175
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.
References:
https://usn.ubuntu.com/4694-1
CVE-2020-28374
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.8.0-38.43
https://launchpad.net/ubuntu/+source/linux/5.4.0-62.70
https://launchpad.net/ubuntu/+source/linux-hwe-5.8/5.8.0-38.43~20.04.1
https://launchpad.net/ubuntu/+source/linux/4.15.0-132.136
https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-62.70~18.04.1
https://launchpad.net/ubuntu/+source/linux/4.4.0-200.232
https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-132.136~16.04.1
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