USN-5754-2: Linux kernel (Azure) vulnerabilities
12 December 2022
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux-azure - Linux kernel for Microsoft Azure Cloud systems
Details
It was discovered that the NFSD implementation in the Linux kernel did not
properly handle some RPC messages, leading to a buffer overflow. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-43945)
It was discovered that a memory leak existed in the IPv6 implementation of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2022-3524)
It was discovered that a race condition existed in the Bluetooth subsystem
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-2022-3564)
It was discovered that the ISDN implementation of the Linux kernel
contained a use-after-free vulnerability. A privileged user could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3565)
It was discovered that the TCP implementation in the Linux kernel contained
a data race condition. An attacker could possibly use this to cause
undesired behaviors. (CVE-2022-3566)
It was discovered that the IPv6 implementation in the Linux kernel
contained a data race condition. An attacker could possibly use this to
cause undesired behaviors. (CVE-2022-3567)
It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in
the Linux kernel did not properly handle certain error conditions. A local
attacker with physical access could plug in a specially crafted USB device
to cause a denial of service (memory exhaustion). (CVE-2022-3594)
It was discovered that a null pointer dereference existed in the NILFS2
file system implementation in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash). (CVE-2022-3621)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 22.10
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-5754-1
- USN-5755-1
- USN-5756-1
- USN-5757-1
- USN-5757-2
- USN-5758-1
- USN-5755-2
- USN-5756-2
- USN-5773-1
- USN-5756-3
- USN-5774-1
- USN-5779-1
- USN-5780-1
- USN-5789-1
- USN-5914-1
- USN-5794-1
- USN-5802-1
- USN-5804-1
- USN-5804-2
- USN-5808-1
- USN-5813-1
- USN-5829-1
- USN-5830-1
- USN-5861-1
- USN-5863-1
- USN-5875-1
- USN-5918-1
- LSN-0092-1
- USN-5913-1