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AUSCERT External Security Bulletin Redistribution
ESB-2023.3117
USN-6127-1: Linux kernel vulnerabilities
1 June 2023
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: kernel
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-32233 CVE-2023-31436 CVE-2023-30456
CVE-2023-2612 CVE-2023-1380
Original Bulletin:
https://ubuntu.com/security/notices/USN-6127-1
Comment: CVSS (Max): 7.8* CVE-2023-32233 (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
* Not all CVSS available when published
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USN-6127-1: Linux kernel vulnerabilities
31 May 2023
Several security issues were fixed in the Linux kernel.
Releases
o Ubuntu 22.10
o Ubuntu 22.04 LTS
o Ubuntu 20.04 LTS
Packages
o linux - Linux kernel
o linux-aws - Linux kernel for Amazon Web Services (AWS) systems
o linux-aws-5.15 - Linux kernel for Amazon Web Services (AWS) systems
o linux-azure - Linux kernel for Microsoft Azure Cloud systems
o linux-azure-5.15 - Linux kernel for Microsoft Azure cloud systems
o linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
o linux-gcp-5.15 - Linux kernel for Google Cloud Platform (GCP) systems
o linux-gke - Linux kernel for Google Container Engine (GKE) systems
o linux-gke-5.15 - Linux kernel for Google Container Engine (GKE) systems
o linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
o linux-hwe-5.15 - Linux hardware enablement (HWE) kernel
o linux-hwe-5.19 - Linux hardware enablement (HWE) kernel
o linux-ibm - Linux kernel for IBM cloud systems
o linux-kvm - Linux kernel for cloud environments
o linux-lowlatency - Linux low latency kernel
o linux-lowlatency-hwe-5.15 - Linux low latency kernel
o linux-oracle - Linux kernel for Oracle Cloud systems
o linux-oracle-5.15 - Linux kernel for Oracle Cloud systems
o linux-raspi - Linux kernel for Raspberry Pi systems
Details
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
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-2023-32233 )
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. ( CVE-2023-31436 )
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash). ( CVE-2023-30456 )
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform data buffer size validation in some
situations. A physically proximate attacker could use this to craft a
malicious USB device that when inserted, could cause a denial of service
(system crash) or possibly expose sensitive information. ( CVE-2023-1380 )
Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu
Linux kernel contained a race condition when handling inode locking in some
situations. A local attacker could use this to cause a denial of service
(kernel deadlock). ( CVE-2023-2612 )
Reduce your security exposure
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Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.10
o linux-image-virtual - 5.19.0.43.39
o linux-image-5.19.0-1019-raspi - 5.19.0-1019.26
o linux-image-generic-64k - 5.19.0.43.39
o linux-image-generic - 5.19.0.43.39
o linux-image-aws - 5.19.0.1026.23
o linux-image-5.19.0-1025-lowlatency - 5.19.0-1025.26
o linux-image-5.19.0-1025-lowlatency-64k - 5.19.0-1025.26
o linux-image-raspi - 5.19.0.1019.18
o linux-image-5.19.0-1023-ibm - 5.19.0-1023.25
o linux-image-ibm - 5.19.0.1023.20
o linux-image-lowlatency-64k - 5.19.0.1025.21
o linux-image-5.19.0-1027-azure - 5.19.0-1027.30
o linux-image-raspi-nolpae - 5.19.0.1019.18
o linux-image-5.19.0-43-generic - 5.19.0-43.44
o linux-image-5.19.0-1025-gcp - 5.19.0-1025.27
o linux-image-azure - 5.19.0.1027.22
o linux-image-5.19.0-1024-oracle - 5.19.0-1024.27
o linux-image-kvm - 5.19.0.1024.21
o linux-image-5.19.0-43-generic-lpae - 5.19.0-43.44
o linux-image-gcp - 5.19.0.1025.21
o linux-image-generic-lpae - 5.19.0.43.39
o linux-image-5.19.0-43-generic-64k - 5.19.0-43.44
o linux-image-5.19.0-1019-raspi-nolpae - 5.19.0-1019.26
o linux-image-oracle - 5.19.0.1024.20
o linux-image-5.19.0-1024-kvm - 5.19.0-1024.25
o linux-image-5.19.0-1026-aws - 5.19.0-1026.27
o linux-image-lowlatency - 5.19.0.1025.21
Ubuntu 22.04
o linux-image-gkeop - 5.15.0.1021.20
o linux-image-virtual - 5.15.0.73.71
o linux-image-5.15.0-73-generic - 5.15.0-73.80
o linux-image-5.19.0-43-generic - 5.19.0-43.44~22.04.1
o linux-image-5.15.0-1031-ibm - 5.15.0-1031.34
o linux-image-azure - 5.15.0.1039.35
o linux-image-5.19.0-43-generic-64k - 5.19.0-43.44~22.04.1
o linux-image-generic-64k-hwe-22.04 - 5.19.0.43.44~22.04.17
o linux-image-kvm - 5.15.0.1034.30
o linux-image-lowlatency - 5.15.0.73.78
o linux-image-generic-64k - 5.15.0.73.71
o linux-image-gke-5.15 - 5.15.0.1034.33
o linux-image-5.15.0-1021-gkeop - 5.15.0-1021.26
o linux-image-5.15.0-73-lowlatency - 5.15.0-73.80
o linux-image-5.15.0-1034-kvm - 5.15.0-1034.39
o linux-image-5.15.0-1036-oracle - 5.15.0-1036.42
o linux-image-gkeop-5.15 - 5.15.0.1021.20
o linux-image-5.15.0-1039-azure - 5.15.0-1039.46
o linux-image-generic-lpae-hwe-22.04 - 5.19.0.43.44~22.04.17
o linux-image-5.15.0-73-lowlatency-64k - 5.15.0-73.80
o linux-image-generic-lpae - 5.15.0.73.71
o linux-image-ibm - 5.15.0.1031.27
o linux-image-virtual-hwe-22.04 - 5.19.0.43.44~22.04.17
o linux-image-azure-lts-22.04 - 5.15.0.1039.35
o linux-image-aws-lts-22.04 - 5.15.0.1037.36
o linux-image-5.15.0-73-generic-64k - 5.15.0-73.80
o linux-image-gke - 5.15.0.1034.33
o linux-image-gcp-lts-22.04 - 5.15.0.1035.31
o linux-image-oracle - 5.15.0.1036.31
o linux-image-5.15.0-1034-gke - 5.15.0-1034.39
o linux-image-generic - 5.15.0.73.71
o linux-image-generic-hwe-22.04 - 5.19.0.43.44~22.04.17
o linux-image-5.15.0-1037-aws - 5.15.0-1037.41
o linux-image-5.19.0-43-generic-lpae - 5.19.0-43.44~22.04.1
o linux-image-5.15.0-1035-gcp - 5.15.0-1035.43
o linux-image-lowlatency-64k - 5.15.0.73.78
o linux-image-5.15.0-73-generic-lpae - 5.15.0-73.80
Ubuntu 20.04
o linux-image-5.15.0-1039-azure - 5.15.0-1039.46~20.04.1
o linux-image-5.15.0-1034-gke - 5.15.0-1034.39~20.04.1
o linux-image-virtual-hwe-20.04 - 5.15.0.73.80~20.04.34
o linux-image-aws - 5.15.0.1037.41~20.04.26
o linux-image-azure-cvm - 5.15.0.1039.46~20.04.29
o linux-image-gke-5.15 - 5.15.0.1034.39~20.04.1
o linux-image-lowlatency-hwe-20.04 - 5.15.0.73.80~20.04.31
o linux-image-generic-hwe-20.04 - 5.15.0.73.80~20.04.34
o linux-image-5.15.0-73-generic - 5.15.0-73.80~20.04.1
o linux-image-5.15.0-73-lowlatency - 5.15.0-73.80~20.04.1
o linux-image-oem-20.04c - 5.15.0.73.80~20.04.34
o linux-image-oem-20.04b - 5.15.0.73.80~20.04.34
o linux-image-oem-20.04d - 5.15.0.73.80~20.04.34
o linux-image-azure - 5.15.0.1039.46~20.04.29
o linux-image-5.15.0-1037-aws - 5.15.0-1037.41~20.04.1
o linux-image-oem-20.04 - 5.15.0.73.80~20.04.34
o linux-image-5.15.0-73-generic-lpae - 5.15.0-73.80~20.04.1
o linux-image-5.15.0-73-generic-64k - 5.15.0-73.80~20.04.1
o linux-image-5.15.0-1036-oracle - 5.15.0-1036.42~20.04.1
o linux-image-gcp - 5.15.0.1035.43~20.04.1
o linux-image-5.15.0-73-lowlatency-64k - 5.15.0-73.80~20.04.1
o linux-image-5.15.0-1035-gcp - 5.15.0-1035.43~20.04.1
o linux-image-generic-64k-hwe-20.04 - 5.15.0.73.80~20.04.34
o linux-image-oracle - 5.15.0.1036.42~20.04.1
o linux-image-generic-lpae-hwe-20.04 - 5.15.0.73.80~20.04.34
o linux-image-lowlatency-64k-hwe-20.04 - 5.15.0.73.80~20.04.31
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-2023-32233
o CVE-2023-1380
o CVE-2023-2612
o CVE-2023-31436
o CVE-2023-30456
Related notices
o USN-6122-1 : linux-modules-6.1.0-1013-oem, linux-oem-22.04c,
linux-image-oem-22.04c, linux-oem-6.1, linux-oem-6.1-headers-6.1.0-1013,
linux-modules-ivsc-oem-22.04c, linux-tools-oem-22.04c,
linux-image-unsigned-6.1.0-1013-oem, linux-headers-oem-22.04c,
linux-oem-6.1-tools-6.1.0-1013, linux-modules-iwlwifi-oem-22.04c,
linux-buildinfo-6.1.0-1013-oem, linux-headers-6.1.0-1013-oem,
linux-modules-ipu6-6.1.0-1013-oem, linux-tools-6.1.0-1013-oem,
linux-modules-iwlwifi-6.1.0-1013-oem, linux-modules-ipu6-oem-22.04c,
linux-modules-ivsc-6.1.0-1013-oem, linux-image-6.1.0-1013-oem,
linux-oem-6.1-tools-host
o USN-6123-1 : linux-modules-ivsc-oem-22.04b, linux-buildinfo-6.0.0-1017-oem,
linux-modules-ipu6-6.0.0-1017-oem, linux-oem-22.04b,
linux-image-6.0.0-1017-oem, linux-oem-6.0, linux-oem-6.0-tools-6.0.0-1017,
linux-image-oem-22.04b, linux-modules-6.0.0-1017-oem,
linux-headers-6.0.0-1017-oem, linux-oem-6.0-headers-6.0.0-1017,
linux-tools-oem-22.04b, linux-modules-ivsc-6.0.0-1017-oem,
linux-modules-iwlwifi-oem-22.04b, linux-oem-6.0-tools-host,
linux-image-unsigned-6.0.0-1017-oem, linux-headers-oem-22.04b,
linux-modules-iwlwifi-6.0.0-1017-oem, linux-modules-ipu6-oem-22.04b,
linux-tools-6.0.0-1017-oem
o USN-6124-1 : linux-modules-ipu6-oem-22.04,
linux-image-unsigned-5.17.0-1032-oem, linux-oem-5.17,
linux-headers-oem-22.04a, linux-buildinfo-5.17.0-1032-oem,
linux-modules-ivsc-5.17.0-1032-oem, linux-headers-5.17.0-1032-oem,
linux-modules-5.17.0-1032-oem, linux-tools-oem-22.04a,
linux-oem-5.17-tools-5.17.0-1032, linux-headers-oem-22.04,
linux-oem-5.17-headers-5.17.0-1032, linux-oem-22.04a,
linux-oem-5.17-tools-host, linux-oem-22.04,
linux-modules-ipu6-5.17.0-1032-oem, linux-image-5.17.0-1032-oem,
linux-tools-oem-22.04, linux-image-oem-22.04,
linux-modules-ipu6-oem-22.04a, linux-modules-iwlwifi-5.17.0-1032-oem,
linux-modules-iwlwifi-oem-22.04a, linux-tools-5.17.0-1032-oem,
linux-modules-ivsc-oem-22.04a, linux-modules-ivsc-oem-22.04,
linux-image-oem-22.04a, linux-modules-iwlwifi-oem-22.04
o USN-6033-1 : linux-modules-ipu6-6.1.0-1009-oem,
linux-modules-ipu6-oem-22.04c, linux-oem-6.1-headers-6.1.0-1009,
linux-image-oem-22.04c, linux-oem-6.1, linux-buildinfo-6.1.0-1009-oem,
linux-modules-6.1.0-1009-oem, linux-modules-ivsc-6.1.0-1009-oem,
linux-modules-ivsc-oem-22.04c, linux-headers-oem-22.04c,
linux-oem-6.1-tools-host, linux-tools-6.1.0-1009-oem,
linux-tools-oem-22.04c, linux-image-unsigned-6.1.0-1009-oem,
linux-oem-6.1-tools-6.1.0-1009, linux-image-6.1.0-1009-oem,
linux-headers-6.1.0-1009-oem, linux-oem-22.04c
- --------------------------END INCLUDED TEXT--------------------
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