[USN-6284-1] Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-6284-1
August 11, 2023
linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-gkeop,
linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi,
linux-raspi-5.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
Summary:
Several security issues were fixed in the Linux kernel.
Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-iot: Linux kernel for IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi systems
Details:
It was discovered that the netlink implementation in the Linux kernel did
not properly validate policies when parsing attributes in some situations.
An attacker could use this to cause a denial of service (infinite
recursion). (CVE-2020-36691)
Billy Jheng Bing Jhong discovered that the CIFS network file system
implementation in the Linux kernel did not properly validate arguments to
ioctl() in some situations. A local attacker could possibly use this to
cause a denial of service (system crash). (CVE-2022-0168)
It was discovered that the ext4 file system implementation in the Linux
kernel contained a use-after-free vulnerability. An attacker could use this
to construct a malicious ext4 file system image that, when mounted, could
cause a denial of service (system crash). (CVE-2022-1184)
It was discovered that some AMD x86-64 processors with SMT enabled could
speculatively execute instructions using a return address from a sibling
thread. A local attacker could possibly use this to expose sensitive
information. (CVE-2022-27672)
William Zhao discovered that the Traffic Control (TC) subsystem in the
Linux kernel did not properly handle network packet retransmission in
certain situations. A local attacker could use this to cause a denial of
service (kernel deadlock). (CVE-2022-4269)
It was discovered that a race condition existed in the qdisc implementation
in the Linux kernel, 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-2023-0590)
It was discovered that a race condition existed in the btrfs file system
implementation in the Linux kernel, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-1611)
It was discovered that the APM X-Gene SoC hardware monitoring driver in the
Linux kernel contained a race condition, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or expose sensitive information (kernel memory).
(CVE-2023-1855)
It was discovered that the ST NCI NFC driver did not properly handle device
removal events. A physically proximate attacker could use this to cause a
denial of service (system crash). (CVE-2023-1990)
It was discovered that the XFS file system implementation in the Linux
kernel did not properly perform metadata validation when mounting certain
images. An attacker could use this to specially craft a file system image
that, when mounted, could cause a denial of service (system crash).
(CVE-2023-2124)
It was discovered that the SLIMpro I2C device driver in the Linux kernel
did not properly validate user-supplied data in some situations, leading to
an out-of-bounds write vulnerability. A privileged attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2023-2194)
It was discovered that a race condition existed in the TLS subsystem in the
Linux kernel, leading to a use-after-free or 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-2023-28466)
It was discovered that the DA9150 charger driver in the Linux kernel did
not properly handle device removal, leading to a user-after free
vulnerability. A physically proximate attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-30772)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly handle error conditions in some situations, leading
to a use-after-free vulnerability. A local attacker could possibly use this
to cause a denial of service (system crash). (CVE-2023-3111)
It was discovered that the Ricoh R5C592 MemoryStick card reader driver in
the Linux kernel contained a race condition during module unload, 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-2023-3141)
It was discovered that the Qualcomm EMAC ethernet driver in the Linux
kernel did not properly handle device removal, leading to a user-after free
vulnerability. A physically proximate attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-33203)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
linux-image-5.4.0-1019-iot 5.4.0-1019.20
linux-image-5.4.0-1074-gkeop 5.4.0-1074.78
linux-image-5.4.0-1091-raspi 5.4.0-1091.102
linux-image-5.4.0-1096-kvm 5.4.0-1096.102
linux-image-5.4.0-1106-oracle 5.4.0-1106.115
linux-image-5.4.0-1107-aws 5.4.0-1107.115
linux-image-5.4.0-1110-gcp 5.4.0-1110.119
linux-image-5.4.0-156-generic 5.4.0-156.173
linux-image-5.4.0-156-generic-lpae 5.4.0-156.173
linux-image-5.4.0-156-lowlatency 5.4.0-156.173
linux-image-aws-lts-20.04 5.4.0.1107.104
linux-image-gcp-lts-20.04 5.4.0.1110.112
linux-image-generic 5.4.0.156.152
linux-image-generic-lpae 5.4.0.156.152
linux-image-gkeop 5.4.0.1074.72
linux-image-gkeop-5.4 5.4.0.1074.72
linux-image-kvm 5.4.0.1096.91
linux-image-lowlatency 5.4.0.156.152
linux-image-oem 5.4.0.156.152
linux-image-oem-osp1 5.4.0.156.152
linux-image-oracle-lts-20.04 5.4.0.1106.99
linux-image-raspi 5.4.0.1091.121
linux-image-raspi2 5.4.0.1091.121
linux-image-virtual 5.4.0.156.152
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
linux-image-5.4.0-1091-raspi 5.4.0-1091.102~18.04.1
linux-image-5.4.0-1106-oracle 5.4.0-1106.115~18.04.1
linux-image-5.4.0-1107-aws 5.4.0-1107.115~18.04.1
linux-image-5.4.0-1110-gcp 5.4.0-1110.119~18.04.1
linux-image-aws 5.4.0.1107.85
linux-image-gcp 5.4.0.1110.86
linux-image-oracle 5.4.0.1106.115~18.04.78
linux-image-raspi-hwe-18.04 5.4.0.1091.88
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:
https://ubuntu.com/security/notices/USN-6284-1
CVE-2020-36691, CVE-2022-0168, CVE-2022-1184, CVE-2022-27672,
CVE-2022-4269, CVE-2023-0590, CVE-2023-1611, CVE-2023-1855,
CVE-2023-1990, CVE-2023-2124, CVE-2023-2194, CVE-2023-28466,
CVE-2023-30772, CVE-2023-3111, CVE-2023-3141, CVE-2023-33203
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-156.173
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1107.115
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1110.119
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1074.78
https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1019.20
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1096.102
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1106.115
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1091.102
A Linux kernel security update has been released for Ubuntu Linux 18.04 LTS and 23.04 LTS.
