USN-6446-1: Linux kernel vulnerabilities
20 October 2023
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux - Linux kernel
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems
- linux-azure - Linux kernel for Microsoft Azure Cloud systems
- linux-azure-5.15 - Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde - Linux kernel for Microsoft Azure CVM cloud systems
- linux-azure-fde-5.15 - Linux kernel for Microsoft Azure CVM cloud systems
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke - Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
- linux-hwe-5.15 - Linux hardware enablement (HWE) kernel
- linux-ibm - Linux kernel for IBM cloud systems
- linux-ibm-5.15 - Linux kernel for IBM cloud systems
- linux-kvm - Linux kernel for cloud environments
- linux-lowlatency - Linux low latency kernel
- linux-lowlatency-hwe-5.15 - Linux low latency kernel
- linux-nvidia - Linux kernel for NVIDIA systems
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-raspi - Linux kernel for Raspberry Pi systems
Details
Ross Lagerwall discovered that the Xen netback backend driver in the Linux
kernel did not properly handle certain unusual packets from a
paravirtualized network frontend, leading to a buffer overflow. An attacker
in a guest VM could use this to cause a denial of service (host system
crash) or possibly execute arbitrary code. (CVE-2023-34319)
Bien Pham discovered that the netfiler subsystem in the Linux kernel
contained a race condition, leading to a use-after-free vulnerability. A
local user could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-4244)
Kyle Zeng discovered that the networking stack implementation in the Linux
kernel did not properly validate skb object size in certain conditions. An
attacker could use this cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-42752)
Kyle Zeng discovered that the netfiler subsystem in the Linux kernel did
not properly calculate array offsets, leading to a out-of-bounds write
vulnerability. A local user could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-42753)
Kyle Zeng discovered that the IPv4 Resource Reservation Protocol (RSVP)
classifier 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). Please note that kernel packet classifier support
for RSVP has been removed to resolve this vulnerability. (CVE-2023-42755)
Kyle Zeng discovered that the netfilter subsystem in the Linux kernel
contained a race condition in IP set operations in certain situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2023-42756)
Bing-Jhong Billy Jheng discovered that the Unix domain socket
implementation in the Linux kernel contained a race condition in certain
situations, leading to a use-after-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-4622)
Budimir Markovic discovered that the qdisc implementation in the Linux
kernel did not properly validate inner classes, leading to a use-after-free
vulnerability. A local user could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-4623)
Alex Birnberg discovered that the netfilter subsystem in the Linux kernel
did not properly validate register length, leading to an out-of- bounds
write vulnerability. A local attacker could possibly use this to cause a
denial of service (system crash). (CVE-2023-4881)
It was discovered that the Quick Fair Queueing scheduler implementation in
the Linux kernel did not properly handle network packets in certain
conditions, leading to a use after free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-4921)
Kevin Rich discovered that the netfilter subsystem in the Linux kernel did
not properly handle removal of rules from chain bindings in certain
circumstances, leading to a use-after-free vulnerability. A local attacker
could possibly use this to cause a denial of service (system crash) or
execute arbitrary code. (CVE-2023-5197)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.04
-
linux-image-5.15.0-1031-gkeop
-
5.15.0-1031.37
-
linux-image-5.15.0-1039-nvidia
-
5.15.0-1039.39
-
linux-image-5.15.0-1039-nvidia-lowlatency
-
5.15.0-1039.39
-
linux-image-5.15.0-1041-ibm
-
5.15.0-1041.44
-
linux-image-5.15.0-1041-raspi
-
5.15.0-1041.44
-
linux-image-5.15.0-1045-gcp
-
5.15.0-1045.53
-
linux-image-5.15.0-1045-gke
-
5.15.0-1045.50
-
linux-image-5.15.0-1045-kvm
-
5.15.0-1045.50
-
linux-image-5.15.0-1046-oracle
-
5.15.0-1046.52
-
linux-image-5.15.0-1048-aws
-
5.15.0-1048.53
-
linux-image-5.15.0-1050-azure
-
5.15.0-1050.57
-
linux-image-5.15.0-1050-azure-fde
-
5.15.0-1050.57.1
-
linux-image-5.15.0-87-generic
-
5.15.0-87.97
-
linux-image-5.15.0-87-generic-64k
-
5.15.0-87.97
-
linux-image-5.15.0-87-generic-lpae
-
5.15.0-87.97
-
linux-image-5.15.0-87-lowlatency
-
5.15.0-87.96
-
linux-image-5.15.0-87-lowlatency-64k
-
5.15.0-87.96
-
linux-image-aws-lts-22.04
-
5.15.0.1048.47
-
linux-image-azure-fde-lts-22.04
-
5.15.0.1050.57.28
-
linux-image-azure-lts-22.04
-
5.15.0.1050.46
-
linux-image-gcp-lts-22.04
-
5.15.0.1045.41
-
linux-image-generic
-
5.15.0.87.84
-
linux-image-generic-64k
-
5.15.0.87.84
-
linux-image-generic-lpae
-
5.15.0.87.84
-
linux-image-gke
-
5.15.0.1045.44
-
linux-image-gke-5.15
-
5.15.0.1045.44
-
linux-image-gkeop
-
5.15.0.1031.30
-
linux-image-gkeop-5.15
-
5.15.0.1031.30
-
linux-image-ibm
-
5.15.0.1041.37
-
linux-image-kvm
-
5.15.0.1045.41
-
linux-image-lowlatency
-
5.15.0.87.89
-
linux-image-lowlatency-64k
-
5.15.0.87.89
-
linux-image-nvidia
-
5.15.0.1039.39
-
linux-image-nvidia-lowlatency
-
5.15.0.1039.39
-
linux-image-oracle
-
5.15.0.1046.41
-
linux-image-oracle-lts-22.04
-
5.15.0.1046.41
-
linux-image-raspi
-
5.15.0.1041.39
-
linux-image-raspi-nolpae
-
5.15.0.1041.39
-
linux-image-virtual
-
5.15.0.87.84
Ubuntu 20.04
-
linux-image-5.15.0-1041-ibm
-
5.15.0-1041.44~20.04.1
-
linux-image-5.15.0-1048-aws
-
5.15.0-1048.53~20.04.1
-
linux-image-5.15.0-1050-azure
-
5.15.0-1050.57~20.04.1
-
linux-image-5.15.0-1050-azure-fde
-
5.15.0-1050.57~20.04.1.1
-
linux-image-5.15.0-87-generic
-
5.15.0-87.97~20.04.1
-
linux-image-5.15.0-87-generic-64k
-
5.15.0-87.97~20.04.1
-
linux-image-5.15.0-87-generic-lpae
-
5.15.0-87.97~20.04.1
-
linux-image-5.15.0-87-lowlatency
-
5.15.0-87.96~20.04.1
-
linux-image-5.15.0-87-lowlatency-64k
-
5.15.0-87.96~20.04.1
-
linux-image-aws
-
5.15.0.1048.53~20.04.36
-
linux-image-azure
-
5.15.0.1050.57~20.04.39
-
linux-image-azure-cvm
-
5.15.0.1050.57~20.04.39
-
linux-image-azure-fde
-
5.15.0.1050.57~20.04.1.28
-
linux-image-generic-64k-hwe-20.04
-
5.15.0.87.97~20.04.45
-
linux-image-generic-hwe-20.04
-
5.15.0.87.97~20.04.45
-
linux-image-generic-lpae-hwe-20.04
-
5.15.0.87.97~20.04.45
-
linux-image-ibm
-
5.15.0.1041.44~20.04.13
-
linux-image-lowlatency-64k-hwe-20.04
-
5.15.0.87.96~20.04.42
-
linux-image-lowlatency-hwe-20.04
-
5.15.0.87.96~20.04.42
-
linux-image-oem-20.04
-
5.15.0.87.97~20.04.45
-
linux-image-oem-20.04b
-
5.15.0.87.97~20.04.45
-
linux-image-oem-20.04c
-
5.15.0.87.97~20.04.45
-
linux-image-oem-20.04d
-
5.15.0.87.97~20.04.45
-
linux-image-virtual-hwe-20.04
-
5.15.0.87.97~20.04.45
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.
Related notices
- USN-6439-1
- USN-6440-1
- USN-6441-1
- USN-6442-1
- USN-6444-1
- USN-6445-1
- USN-6440-2
- USN-6439-2
- USN-6441-2
- USN-6444-2
- USN-6445-2
- USN-6446-2
- USN-6440-3
- USN-6446-3
- USN-6454-1
- USN-6441-3
- USN-6454-2
- USN-6461-1
- USN-6466-1
- USN-6454-3
- USN-6454-4
- USN-6479-1
- USN-6699-1
- USN-6415-1
- LSN-0099-1
- USN-6503-1
- USN-6537-1
- USN-6572-1
- USN-6681-1
- USN-6681-2
- USN-6681-3
- USN-6681-4
- USN-6716-1
- USN-6443-1
- USN-6460-1
- USN-6343-1