1. Ubuntu Security Notices
  2. USN-6025-1

USN-6025-1: Linux kernel vulnerabilities

Publication date

19 April 2023

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the Traffic-Control Index (TCINDEX) implementation
in the Linux kernel contained 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-2023-1281)

It was discovered that the OverlayFS implementation in the Linux kernel did
not properly handle copy up operation in some conditions. A local attacker
could possibly use this to gain elevated privileges. (CVE-2023-0386)

Haowei Yan discovered that a race condition existed in the Layer 2
Tunneling Protocol (L2TP) implementation in the Linux kernel. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2022-4129)

It was discovered that the network queuing discipline implementation in the
Linux kernel contained a null...

It was discovered that the Traffic-Control Index (TCINDEX) implementation
in the Linux kernel contained 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-2023-1281)

It was discovered that the OverlayFS implementation in the Linux kernel did
not properly handle copy up operation in some conditions. A local attacker
could possibly use this to gain elevated privileges. (CVE-2023-0386)

Haowei Yan discovered that a race condition existed in the Layer 2
Tunneling Protocol (L2TP) implementation in the Linux kernel. A local
attacker could possibly use this to cause a denial of service (system
crash). (CVE-2022-4129)

It was discovered that the network queuing discipline implementation in the
Linux kernel contained a null pointer dereference in some situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2022-47929)

It was discovered that the NTFS file system implementation in the Linux
kernel contained a null pointer dereference in some situations. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2022-4842)

Kyle Zeng discovered that the IPv6 implementation in the Linux kernel
contained a NULL pointer dereference vulnerability in certain situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2023-0394)

It was discovered that the Human Interface Device (HID) support driver in
the Linux kernel contained a type confusion vulnerability in some
situations. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-1073)

It was discovered that a memory leak existed in the SCTP protocol
implementation in the Linux kernel. A local attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2023-1074)

It was discovered that the NFS implementation in the Linux kernel did not
properly handle pending tasks in some situations. A local attacker could
use this to cause a denial of service (system crash) or expose sensitive
information (kernel memory). (CVE-2023-1652)

Lianhui Tang discovered that the MPLS implementation in the Linux kernel
did not properly handle certain sysctl allocation failure conditions,
leading to a double-free vulnerability. An attacker could use this to cause
a denial of service or possibly execute arbitrary code. (CVE-2023-26545)

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-5.15.0-1018-gkeop –  5.15.0-1018.23
linux-image-virtual –  5.15.0.70.68
linux-image-5.15.0-1028-ibm –  5.15.0-1028.31
linux-image-5.15.0-70-lowlatency-64k –  5.15.0-70.77
linux-image-5.15.0-70-lowlatency –  5.15.0-70.77
linux-image-generic-64k –  5.15.0.70.68
linux-image-generic –  5.15.0.70.68
linux-image-5.15.0-70-generic-lpae –  5.15.0-70.77
linux-image-5.15.0-1027-raspi-nolpae –  5.15.0-1027.29
linux-image-gke-5.15 –  5.15.0.1031.30
linux-image-5.15.0-70-generic-64k –  5.15.0-70.77
linux-image-ibm –  5.15.0.1028.24
linux-image-5.15.0-1033-oracle –  5.15.0-1033.39
linux-image-gcp –  5.15.0.1032.27
linux-image-5.15.0-1036-azure-fde –  5.15.0-1036.43.1
linux-image-5.15.0-1031-kvm –  5.15.0-1031.36
linux-image-azure-fde –  5.15.0.1036.43.13
linux-image-azure-lts-22.04 –  5.15.0.1036.32
linux-image-gkeop –  5.15.0.1018.17
linux-image-azure –  5.15.0.1036.32
linux-image-raspi-nolpae –  5.15.0.1027.24
linux-image-aws-lts-22.04 –  5.15.0.1034.33
linux-image-5.15.0-1034-aws –  5.15.0-1034.38
linux-image-gke –  5.15.0.1031.30
linux-image-5.15.0-1032-gcp –  5.15.0-1032.40
linux-image-5.15.0-1027-raspi –  5.15.0-1027.29
linux-image-5.15.0-1031-gke –  5.15.0-1031.36
linux-image-5.15.0-1036-azure –  5.15.0-1036.43
linux-image-lowlatency-64k –  5.15.0.70.75
linux-image-gkeop-5.15 –  5.15.0.1018.17
linux-image-oracle –  5.15.0.1033.28
linux-image-raspi –  5.15.0.1027.24
linux-image-kvm –  5.15.0.1031.27
linux-image-generic-lpae –  5.15.0.70.68
linux-image-5.15.0-70-generic –  5.15.0-70.77
linux-image-lowlatency –  5.15.0.70.75
20.04 focal linux-image-5.15.0-70-lowlatency-64k –  5.15.0-70.77~20.04.1
linux-image-5.15.0-70-lowlatency –  5.15.0-70.77~20.04.1
linux-image-aws –  5.15.0.1034.38~20.04.23
linux-image-azure-cvm –  5.15.0.1036.43~20.04.26
linux-image-gke-5.15 –  5.15.0.1031.36~20.04.1
linux-image-lowlatency-hwe-20.04 –  5.15.0.70.77~20.04.28
linux-image-gcp –  5.15.0.1032.40~20.04.1
linux-image-5.15.0-1033-oracle –  5.15.0-1033.39~20.04.1
linux-image-azure –  5.15.0.1036.43~20.04.26
linux-image-5.15.0-1034-aws –  5.15.0-1034.38~20.04.1
linux-image-5.15.0-1032-gcp –  5.15.0-1032.40~20.04.1
linux-image-lowlatency-64k-hwe-20.04 –  5.15.0.70.77~20.04.28
linux-image-5.15.0-1031-gke –  5.15.0-1031.36~20.04.1
linux-image-5.15.0-1036-azure –  5.15.0-1036.43~20.04.1
linux-image-oracle –  5.15.0.1033.39~20.04.1

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References

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