1. Ubuntu Security Notices
  2. USN-6625-1

USN-6625-1: Linux kernel vulnerabilities

Publication date

7 February 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Marek Marczykowski-Górecki discovered that the Xen event channel
infrastructure implementation in the Linux kernel contained a race
condition. An attacker in a guest VM could possibly use this to cause a
denial of service (paravirtualized device unavailability). (CVE-2023-34324)

Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver
in the Linux kernel during device removal. A privileged attacker could use
this to cause a denial of service (system crash). (CVE-2023-35827)

It was discovered that a race condition existed in the Linux kernel when
performing operations with kernel objects, leading to an out-of-bounds
write. A local attacker could use this to cause a denial of service (system
crash) or execute arbitrary code. (CVE-2023-45863)

黄思聪 discovered that the NFC Controller Interface (NCI)...

Marek Marczykowski-Górecki discovered that the Xen event channel
infrastructure implementation in the Linux kernel contained a race
condition. An attacker in a guest VM could possibly use this to cause a
denial of service (paravirtualized device unavailability). (CVE-2023-34324)

Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver
in the Linux kernel during device removal. A privileged attacker could use
this to cause a denial of service (system crash). (CVE-2023-35827)

It was discovered that a race condition existed in the Linux kernel when
performing operations with kernel objects, leading to an out-of-bounds
write. A local attacker could use this to cause a denial of service (system
crash) or execute arbitrary code. (CVE-2023-45863)

黄思聪 discovered that the NFC Controller Interface (NCI) implementation in
the Linux kernel did not properly handle certain memory allocation failure
conditions, leading to a null pointer dereference vulnerability. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2023-46343)

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
20.04 focal linux-image-5.4.0-1030-iot –  5.4.0-1030.31
linux-image-5.4.0-1037-xilinx-zynqmp –  5.4.0-1037.41
linux-image-5.4.0-1065-ibm –  5.4.0-1065.70
linux-image-5.4.0-1078-bluefield –  5.4.0-1078.84
linux-image-5.4.0-1085-gkeop –  5.4.0-1085.89
linux-image-5.4.0-1106-kvm –  5.4.0-1106.113
linux-image-5.4.0-1117-oracle –  5.4.0-1117.126
linux-image-5.4.0-1118-aws –  5.4.0-1118.128
linux-image-5.4.0-1123-azure –  5.4.0-1123.130
linux-image-5.4.0-171-generic –  5.4.0-171.189
linux-image-5.4.0-171-generic-lpae –  5.4.0-171.189
linux-image-5.4.0-171-lowlatency –  5.4.0-171.189
linux-image-aws-lts-20.04 –  5.4.0.1118.115
linux-image-azure-lts-20.04 –  5.4.0.1123.116
linux-image-bluefield –  5.4.0.1078.73
linux-image-generic –  5.4.0.171.169
linux-image-generic-lpae –  5.4.0.171.169
linux-image-gkeop –  5.4.0.1085.83
linux-image-gkeop-5.4 –  5.4.0.1085.83
linux-image-ibm-lts-20.04 –  5.4.0.1065.94
linux-image-kvm –  5.4.0.1106.102
linux-image-lowlatency –  5.4.0.171.169
linux-image-oem –  5.4.0.171.169
linux-image-oem-osp1 –  5.4.0.171.169
linux-image-oracle-lts-20.04 –  5.4.0.1117.110
linux-image-virtual –  5.4.0.171.169
linux-image-xilinx-zynqmp –  5.4.0.1037.37
18.04 bionic linux-image-5.4.0-1065-ibm –  5.4.0-1065.70~18.04.1  
linux-image-5.4.0-1117-oracle –  5.4.0-1117.126~18.04.1  
linux-image-5.4.0-1118-aws –  5.4.0-1118.128~18.04.1  
linux-image-5.4.0-1123-azure –  5.4.0-1123.130~18.04.1  
linux-image-5.4.0-171-generic –  5.4.0-171.189~18.04.1  
linux-image-5.4.0-171-lowlatency –  5.4.0-171.189~18.04.1  
linux-image-aws –  5.4.0.1118.96  
linux-image-azure –  5.4.0.1123.96  
linux-image-generic-hwe-18.04 –  5.4.0.171.189~18.04.139  
linux-image-ibm –  5.4.0.1065.75  
linux-image-lowlatency-hwe-18.04 –  5.4.0.171.189~18.04.139  
linux-image-oem –  5.4.0.171.189~18.04.139  
linux-image-oem-osp1 –  5.4.0.171.189~18.04.139  
linux-image-oracle –  5.4.0.1117.126~18.04.89  
linux-image-snapdragon-hwe-18.04 –  5.4.0.171.189~18.04.139  
linux-image-virtual-hwe-18.04 –  5.4.0.171.189~18.04.139  

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References

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