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AUSCERT External Security Bulletin Redistribution
ESB-2022.0965
USN-5317-1: Linux kernel vulnerabilities
9 March 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Linux kernel
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-25636 CVE-2022-23960 CVE-2022-0847
CVE-2022-0002 CVE-2022-0001
Original Bulletin:
https://ubuntu.com/security/notices/USN-5317-1
Comment: CVSS (Max): 7.8 CVE-2022-25636 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: SUSE
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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USN-5317-1: Linux kernel vulnerabilities
09 March 2022
Several security issues were fixed in the Linux kernel.
Releases
o Ubuntu 21.10
o Ubuntu 20.04 LTS
Packages
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-aws-5.13 - Linux kernel for Amazon Web Services (AWS) systems
o linux-azure - Linux kernel for Microsoft Azure Cloud systems
o linux-azure-5.13 - Linux kernel for Microsoft Azure cloud systems
o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
o linux-gcp-5.13 - Linux kernel for Google Cloud Platform (GCP) systems
o linux-hwe-5.13 - Linux hardware enablement (HWE) kernel
o linux-kvm - Linux kernel for cloud environments
o linux-oem-5.14 - Linux kernel for OEM systems
o linux-oracle - Linux kernel for Oracle Cloud systems
o linux-oracle-5.13 - Linux kernel for Oracle Cloud systems
o linux-raspi - Linux kernel for Raspberry Pi systems
Details
Nick Gregory discovered that the Linux kernel incorrectly handled network
offload functionality. A local attacker could use this to cause a denial of
service or possibly execute arbitrary code. ( CVE-2022-25636 )
Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano
Giuffrida discovered that hardware mitigations added by ARM to their
processors to address Spectre-BTI were insufficient. A local attacker could
potentially use this to expose sensitive information. ( CVE-2022-23960 )
Max Kellermann discovered that the Linux kernel incorrectly handled Unix
pipes. A local attacker could potentially use this to modify any file that
could be opened for reading. ( CVE-2022-0847 )
Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano
Giuffrida discovered that hardware mitigations added by Intel to their
processors to address Spectre-BTI were insufficient. A local attacker could
potentially use this to expose sensitive information. ( CVE-2022-0001 ,
CVE-2022-0002 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 21.10
o linux-image-5.13.0-35-generic - 5.13.0-35.40
o linux-image-virtual - 5.13.0.35.44
o linux-image-5.13.0-1017-aws - 5.13.0-1017.19
o linux-image-generic-64k - 5.13.0.35.44
o linux-image-generic - 5.13.0.35.44
o linux-image-5.13.0-1020-raspi-nolpae - 5.13.0-1020.22
o linux-image-aws - 5.13.0.1017.18
o linux-image-5.13.0-1020-raspi - 5.13.0-1020.22
o linux-image-5.13.0-1016-kvm - 5.13.0-1016.17
o linux-image-5.13.0-1017-azure - 5.13.0-1017.19
o linux-image-azure - 5.13.0.1017.17
o linux-image-raspi-nolpae - 5.13.0.1020.25
o linux-image-oem-20.04 - 5.13.0.35.44
o linux-image-gke - 5.13.0.1019.17
o linux-image-5.13.0-35-generic-lpae - 5.13.0-35.40
o linux-image-5.13.0-1019-gcp - 5.13.0-1019.23
o linux-image-5.13.0-35-lowlatency - 5.13.0-35.40
o linux-image-gcp - 5.13.0.1019.17
o linux-image-5.13.0-1021-oracle - 5.13.0-1021.26
o linux-image-oracle - 5.13.0.1021.21
o linux-image-raspi - 5.13.0.1020.25
o linux-image-5.13.0-35-generic-64k - 5.13.0-35.40
o linux-image-kvm - 5.13.0.1016.16
o linux-image-generic-lpae - 5.13.0.35.44
o linux-image-lowlatency - 5.13.0.35.44
Ubuntu 20.04
o linux-image-5.13.0-35-generic - 5.13.0-35.40~20.04.1
o linux-image-5.13.0-1017-aws - 5.13.0-1017.19~20.04.1
o linux-image-virtual-hwe-20.04 - 5.13.0.35.40~20.04.20
o linux-image-aws - 5.13.0.1017.19~20.04.10
o linux-image-lowlatency-hwe-20.04 - 5.13.0.35.40~20.04.20
o linux-image-5.14.0-1027-oem - 5.14.0-1027.30
o linux-image-5.13.0-1017-azure - 5.13.0-1017.19~20.04.1
o linux-image-oem-20.04c - 5.14.0.1027.24
o linux-image-oem-20.04b - 5.14.0.1027.24
o linux-image-oem-20.04d - 5.14.0.1027.24
o linux-image-generic-hwe-20.04 - 5.13.0.35.40~20.04.20
o linux-image-azure - 5.13.0.1017.19~20.04.7
o linux-image-oem-20.04 - 5.14.0.1027.24
o linux-image-5.13.0-1019-gcp - 5.13.0-1019.23~20.04.1
o linux-image-5.13.0-35-lowlatency - 5.13.0-35.40~20.04.1
o linux-image-gcp - 5.13.0.1019.23~20.04.1
o linux-image-5.13.0-1021-oracle - 5.13.0-1021.26~20.04.1
o linux-image-oracle - 5.13.0.1021.26~20.04.1
o linux-image-generic-lpae-hwe-20.04 - 5.13.0.35.40~20.04.20
o linux-image-5.13.0-35-generic-64k - 5.13.0-35.40~20.04.1
o linux-image-generic-64k-hwe-20.04 - 5.13.0.35.40~20.04.20
o linux-image-5.13.0-35-generic-lpae - 5.13.0-35.40~20.04.1
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
o CVE-2022-23960
o CVE-2022-0001
o CVE-2022-0002
o CVE-2022-0847
o CVE-2022-25636
o https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/BHI
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