1. Ubuntu Security Notices
  2. USN-6626-1

USN-6626-1: Linux kernel vulnerabilities

Publication date

8 February 2024

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

Quentin Minster discovered that a race condition existed in the KSMBD
implementation in the Linux kernel when handling sessions operations. A
remote attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252,
CVE-2023-32257)

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). (

Quentin Minster discovered that a race condition existed in the KSMBD
implementation in the Linux kernel when handling sessions operations. A
remote attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252,
CVE-2023-32257)

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)

Tom Dohrmann discovered that the Secure Encrypted Virtualization (SEV)
implementation for AMD processors in the Linux kernel contained a race
condition when accessing MMIO registers. A local attacker in a SEV guest VM
could possibly use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-46813)

It was discovered that the Microchip USB Ethernet driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could use this to
cause a denial of service (system crash). (CVE-2023-6039)

It was discovered that the TLS subsystem in the Linux kernel did not
properly perform cryptographic operations in some situations, leading to a
null pointer dereference vulnerability. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-6176)

Xingyuan Mo discovered that the netfilter subsystem in the Linux kernel did
not properly handle dynset expressions passed from userspace, leading to a
null pointer dereference vulnerability. A local attacker could use this to
cause a denial of service (system crash). (CVE-2023-6622)

It was discovered that the TIPC protocol implementation in the Linux kernel
did not properly handle locking during tipc_crypto_key_revoke() operations.
A local attacker could use this to cause a denial of service (kernel
deadlock). (CVE-2024-0641)

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
22.04 jammy linux-image-5.15.0-1036-gkeop –  5.15.0-1036.42
linux-image-5.15.0-1044-nvidia –  5.15.0-1044.44
linux-image-5.15.0-1044-nvidia-lowlatency –  5.15.0-1044.44
linux-image-5.15.0-1046-ibm –  5.15.0-1046.49
linux-image-5.15.0-1050-gke –  5.15.0-1050.55
linux-image-5.15.0-1050-kvm –  5.15.0-1050.55
linux-image-5.15.0-1051-gcp –  5.15.0-1051.59
linux-image-5.15.0-1051-oracle –  5.15.0-1051.57
linux-image-5.15.0-1053-aws –  5.15.0-1053.58
linux-image-5.15.0-94-generic –  5.15.0-94.104
linux-image-5.15.0-94-generic-64k –  5.15.0-94.104
linux-image-5.15.0-94-generic-lpae –  5.15.0-94.104
linux-image-aws-lts-22.04 –  5.15.0.1053.52
linux-image-gcp-lts-22.04 –  5.15.0.1051.47
linux-image-generic –  5.15.0.94.91
linux-image-generic-64k –  5.15.0.94.91
linux-image-generic-lpae –  5.15.0.94.91
linux-image-gke –  5.15.0.1050.49
linux-image-gke-5.15 –  5.15.0.1050.49
linux-image-gkeop –  5.15.0.1036.35
linux-image-gkeop-5.15 –  5.15.0.1036.35
linux-image-ibm –  5.15.0.1046.42
linux-image-kvm –  5.15.0.1050.46
linux-image-nvidia –  5.15.0.1044.44
linux-image-nvidia-lowlatency –  5.15.0.1044.44
linux-image-oracle –  5.15.0.1051.46
linux-image-oracle-lts-22.04 –  5.15.0.1051.46
linux-image-virtual –  5.15.0.94.91
20.04 focal linux-image-5.15.0-1036-gkeop –  5.15.0-1036.42~20.04.1
linux-image-5.15.0-1046-ibm –  5.15.0-1046.49~20.04.1
linux-image-5.15.0-1051-gcp –  5.15.0-1051.59~20.04.1
linux-image-5.15.0-1051-oracle –  5.15.0-1051.57~20.04.1
linux-image-5.15.0-1053-aws –  5.15.0-1053.58~20.04.1
linux-image-5.15.0-94-generic –  5.15.0-94.104~20.04.1
linux-image-5.15.0-94-generic-64k –  5.15.0-94.104~20.04.1
linux-image-5.15.0-94-generic-lpae –  5.15.0-94.104~20.04.1
linux-image-5.15.0-94-lowlatency –  5.15.0-94.104~20.04.1
linux-image-5.15.0-94-lowlatency-64k –  5.15.0-94.104~20.04.1
linux-image-aws –  5.15.0.1053.58~20.04.41
linux-image-gcp –  5.15.0.1051.59~20.04.1
linux-image-generic-64k-hwe-20.04 –  5.15.0.94.104~20.04.50
linux-image-generic-hwe-20.04 –  5.15.0.94.104~20.04.50
linux-image-generic-lpae-hwe-20.04 –  5.15.0.94.104~20.04.50
linux-image-gkeop-5.15 –  5.15.0.1036.42~20.04.32
linux-image-ibm –  5.15.0.1046.49~20.04.18
linux-image-lowlatency-64k-hwe-20.04 –  5.15.0.94.104~20.04.47
linux-image-lowlatency-hwe-20.04 –  5.15.0.94.104~20.04.47
linux-image-oem-20.04 –  5.15.0.94.104~20.04.50
linux-image-oem-20.04b –  5.15.0.94.104~20.04.50
linux-image-oem-20.04c –  5.15.0.94.104~20.04.50
linux-image-oem-20.04d –  5.15.0.94.104~20.04.50
linux-image-oracle –  5.15.0.1051.57~20.04.1
linux-image-virtual-hwe-20.04 –  5.15.0.94.104~20.04.50

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References

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