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Ubuntu 18.04 LTS USN-5861-1 High: Linux-Dell300x Kernel Flaws

ubuntu
Calendar Grey February 9, 2023
Dist Ubuntu Esm H88
Several vulnerabilities affecting linux-dell300x have been addressed in Ubuntu 18.04 LTS. Make sure your system is up to date for optimal security.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-dell300x: Linux kernel for Dell 300x platforms

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)

Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation

in the Linux kernel contained multiple use-after-free vulnerabilities. A

physically proximate attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2022-42896)

It was discovered that an out-of-bounds write vulnerability existed in the

Video for Linux 2 (V4L2) implementation in the Linux kernel. A local

attacker could use this to cause a denial of service (system crash) or

possibly execute arbitrary code. (CVE-2022-20369)

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow software update kernel ubuntu linux-dell300x

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1060-dell300x  4.15.0-1060.65
   linux-image-dell300x            4.15.0.1060.59

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-5861-1

CVE-2022-20369, CVE-2022-26373, CVE-2022-2663, CVE-2022-29900,

CVE-2022-29901, CVE-2022-3643, CVE-2022-3646, CVE-2022-3649,

CVE-2022-39842, CVE-2022-41849, CVE-2022-41850, CVE-2022-42896,

CVE-2022-43750, CVE-2022-43945, CVE-2022-45934

February 09, 2023

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow software update kernel ubuntu linux-dell300x

Package Information

https://launchpad.net/ubuntu/+source/linux-dell300x/4.15.0-1060.65

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