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AUSCERT External Security Bulletin Redistribution
ESB-2023.3922
USN-6224-1: Linux kernel vulnerabilities
13 July 2023
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AusCERT Security Bulletin Summary
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Product: Linux kernel
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-2176 CVE-2023-2124
Original Bulletin:
https://ubuntu.com/security/notices/USN-6224-1
Comment: CVSS (Max): 7.8 CVE-2023-2176 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: NVD
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-6224-1: Linux kernel vulnerabilities
12 July 2023
Several security issues were fixed in the Linux kernel.
Releases
o Ubuntu 23.04
Packages
o linux – Linux kernel
o linux-aws – Linux kernel for Amazon Web Services (AWS) systems
o linux-kvm – Linux kernel for cloud environments
o linux-lowlatency – Linux low latency kernel
o linux-raspi – Linux kernel for Raspberry Pi systems
Details
It was discovered that the XFS file system implementation in the Linux
kernel did not properly perform metadata validation when mounting certain
images. An attacker could use this to specially craft a file system image
that, when mounted, could cause a denial of service (system crash).
( CVE-2023-2124 )
Wei Chen discovered that the InfiniBand RDMA communication manager
implementation in the Linux kernel contained an out-of-bounds read
vulnerability. A local attacker could use this to cause a denial of service
(system crash). ( CVE-2023-2176 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 23.04
o linux-image-6.2.0-1008-raspi – 6.2.0-1008.10
o linux-image-virtual – 6.2.0.25.25
o linux-image-generic-64k – 6.2.0.25.25
o linux-image-generic – 6.2.0.25.25
o linux-image-aws – 6.2.0.1007.8
o linux-image-raspi – 6.2.0.1008.11
o linux-image-lowlatency-64k – 6.2.0.1008.8
o linux-image-6.2.0-1008-lowlatency – 6.2.0-1008.8
o linux-image-6.2.0-1008-kvm – 6.2.0-1008.8
o linux-image-6.2.0-1008-lowlatency-64k – 6.2.0-1008.8
o linux-image-6.2.0-25-generic – 6.2.0-25.25
o linux-image-raspi-nolpae – 6.2.0.1008.11
o linux-image-6.2.0-25-generic-lpae – 6.2.0-25.25
o linux-image-kvm – 6.2.0.1008.8
o linux-image-generic-lpae – 6.2.0.25.25
o linux-image-6.2.0-25-generic-64k – 6.2.0-25.25
o linux-image-6.2.0-1007-aws – 6.2.0-1007.7
o linux-image-lowlatency – 6.2.0.1008.8
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-2023-2124
o CVE-2023-2176
Related notices
o USN-6206-1 : linux-oem-22.04, linux-oem-5.17, linux-image-oem-22.04a,
linux-image-unsigned-5.17.0-1034-oem, linux-modules-iwlwifi-oem-22.04,
linux-oem-5.17-tools-5.17.0-1034, linux-oem-22.04a,
linux-headers-oem-22.04, linux-tools-5.17.0-1034-oem,
linux-modules-5.17.0-1034-oem, linux-modules-ivsc-oem-22.04a,
linux-modules-ivsc-5.17.0-1034-oem, linux-modules-iwlwifi-oem-22.04a,
linux-headers-5.17.0-1034-oem, linux-buildinfo-5.17.0-1034-oem,
linux-modules-ipu6-oem-22.04a, linux-oem-5.17-headers-5.17.0-1034,
linux-modules-iwlwifi-5.17.0-1034-oem, linux-modules-ipu6-oem-22.04,
linux-image-5.17.0-1034-oem, linux-tools-oem-22.04,
linux-modules-ipu6-5.17.0-1034-oem, linux-headers-oem-22.04a,
linux-modules-ivsc-oem-22.04, linux-oem-5.17-tools-host,
linux-tools-oem-22.04a, linux-image-oem-22.04
o USN-6194-1 : linux-modules-ipu6-6.1.0-1015-oem, linux-headers-oem-22.04c,
linux-modules-ivsc-6.1.0-1015-oem, linux-modules-iwlwifi-oem-22.04c,
linux-headers-6.1.0-1015-oem, linux-image-unsigned-6.1.0-1015-oem,
linux-tools-oem-22.04c, linux-modules-iwlwifi-6.1.0-1015-oem,
linux-oem-6.1, linux-oem-6.1-tools-6.1.0-1015,
linux-modules-6.1.0-1015-oem, linux-buildinfo-6.1.0-1015-oem,
linux-oem-6.1-headers-6.1.0-1015, linux-modules-ipu6-oem-22.04c,
linux-modules-ivsc-oem-22.04c, linux-image-oem-22.04c,
linux-oem-6.1-tools-host, linux-tools-6.1.0-1015-oem, linux-oem-22.04c,
linux-image-6.1.0-1015-oem
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