==========================================================================
\nUbuntu Security Notice USN-5758-1
\nDecember 01, 2022<\/p>\n
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
\n==========================================================================<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 16.04 ESM
\n– Ubuntu 14.04 ESM<\/p>\n
Summary:<\/p>\n
Several security issues were fixed in the Linux kernel.<\/p>\n
Software Description:
\n– linux: Linux kernel
\n– linux-aws: Linux kernel for Amazon Web Services (AWS) systems
\n– linux-kvm: Linux kernel for cloud environments
\n– linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty<\/p>\n
Details:<\/p>\n
Jann Horn discovered that the Linux kernel did not properly track memory
\nallocations for anonymous VMA mappings in some situations, leading to
\npotential data structure reuse. A local attacker could use this to cause a
\ndenial of service (system crash) or possibly execute arbitrary code.
\n(CVE-2022-42703)<\/p>\n
It was discovered that the video4linux driver for Empia based TV cards in
\nthe Linux kernel did not properly perform reference counting in some
\nsituations, leading to a use-after-free vulnerability. A local attacker
\ncould use this to cause a denial of service (system crash) or possibly
\nexecute arbitrary code. (CVE-2022-3239)<\/p>\n
It was discovered that a memory leak existed in the IPv6 implementation of
\nthe Linux kernel. A local attacker could use this to cause a denial of
\nservice (memory exhaustion). (CVE-2022-3524)<\/p>\n
It was discovered that a race condition existed in the Bluetooth subsystem
\nin the Linux kernel, leading to a use-after-free vulnerability. A local
\nattacker could use this to cause a denial of service (system crash) or
\npossibly execute arbitrary code. (CVE-2022-3564)<\/p>\n
It was discovered that the ISDN implementation of the Linux kernel
\ncontained a use-after-free vulnerability. A privileged user could use this
\nto cause a denial of service (system crash) or possibly execute arbitrary
\ncode. (CVE-2022-3565)<\/p>\n
It was discovered that the TCP implementation in the Linux kernel contained
\na data race condition. An attacker could possibly use this to cause
\nundesired behaviors. (CVE-2022-3566)<\/p>\n
It was discovered that the IPv6 implementation in the Linux kernel
\ncontained a data race condition. An attacker could possibly use this to
\ncause undesired behaviors. (CVE-2022-3567)<\/p>\n
It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in
\nthe Linux kernel did not properly handle certain error conditions. A local
\nattacker with physical access could plug in a specially crafted USB device
\nto cause a denial of service (memory exhaustion). (CVE-2022-3594)<\/p>\n
It was discovered that a null pointer dereference existed in the NILFS2
\nfile system implementation in the Linux kernel. A local attacker could use
\nthis to cause a denial of service (system crash). (CVE-2022-3621)<\/p>\n
It was discovered that the IDT 77252 ATM PCI device driver in the Linux
\nkernel did not properly remove any pending timers during device exit,
\nresulting in a use-after-free vulnerability. A local attacker could
\npossibly use this to cause a denial of service (system crash) or execute
\narbitrary code. (CVE-2022-3635)<\/p>\n
Khalid Masum discovered that the NILFS2 file system implementation in the
\nLinux kernel did not properly handle certain error conditions, leading to a
\nuse-after-free vulnerability. A local attacker could use this to cause a
\ndenial of service or possibly execute arbitrary code. (CVE-2022-3649)<\/p>\n
Xingyuan Mo and Gengjia Chen discovered that the Promise SuperTrak EX
\nstorage controller driver in the Linux kernel did not properly handle
\ncertain structures. A local attacker could potentially use this to expose
\nsensitive information (kernel memory). (CVE-2022-40768)<\/p>\n
It was discovered that the USB monitoring (usbmon) component in the Linux
\nkernel did not properly set permissions on memory mapped in to user space
\nprocesses. A local attacker could use this to cause a denial of service
\n(system crash) or possibly execute arbitrary code. (CVE-2022-43750)<\/p>\n
Update instructions:<\/p>\n
The problem can be corrected by updating your system to the following
\npackage versions:<\/p>\n
Ubuntu 16.04 ESM:
\nlinux-image-4.4.0-1115-kvm 4.4.0-1115.125
\nlinux-image-4.4.0-1152-aws 4.4.0-1152.167
\nlinux-image-4.4.0-235-generic 4.4.0-235.269
\nlinux-image-4.4.0-235-lowlatency 4.4.0-235.269
\nlinux-image-aws 4.4.0.1152.156
\nlinux-image-generic 4.4.0.235.241
\nlinux-image-kvm 4.4.0.1115.112
\nlinux-image-lowlatency 4.4.0.235.241
\nlinux-image-virtual 4.4.0.235.241<\/p>\n
Ubuntu 14.04 ESM:
\nlinux-image-4.4.0-1114-aws 4.4.0-1114.120
\nlinux-image-4.4.0-235-generic 4.4.0-235.269~14.04.1
\nlinux-image-4.4.0-235-lowlatency 4.4.0-235.269~14.04.1
\nlinux-image-aws 4.4.0.1114.111
\nlinux-image-generic-lts-xenial 4.4.0.235.204
\nlinux-image-lowlatency-lts-xenial 4.4.0.235.204
\nlinux-image-virtual-lts-xenial 4.4.0.235.204<\/p>\n
After a standard system update you need to reboot your computer to make
\nall the necessary changes.<\/p>\n
ATTENTION: Due to an unavoidable ABI change the kernel updates have
\nbeen given a new version number, which requires you to recompile and
\nreinstall all third party kernel modules you might have installed.
\nUnless you manually uninstalled the standard kernel metapackages
\n(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
\nlinux-powerpc), a standard system upgrade will automatically perform
\nthis as well.<\/p>\n
References:
\nhttps:\/\/ubuntu.com\/security\/notices\/USN-5758-1
\nCVE-2022-3239, CVE-2022-3524, CVE-2022-3564, CVE-2022-3565,
\nCVE-2022-3566, CVE-2022-3567, CVE-2022-3594, CVE-2022-3621,
\nCVE-2022-3635, CVE-2022-3649, CVE-2022-40768, CVE-2022-42703,
\nCVE-2022-43750<\/p>\n","protected":false},"excerpt":{"rendered":"
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