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Ubuntu 22.04 LTS USN-5879-1 Critical: Linux Kernel Buffer Overflow

ubuntu
Calendar Grey February 16, 2023
Dist Ubuntu Esm H88
Numerous security flaws in the Linux kernel have been resolved in Ubuntu 22.04 LTS, necessitating prompt upgrades.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-hwe-5.19: Linux hardware enablement (HWE) kernel

Details:

Kyle Zeng discovered that the sysctl implementation in the Linux kernel

contained a stack-based buffer overflow. A local attacker could use this to

cause a denial of service (system crash) or execute arbitrary code.

(CVE-2022-4378)

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 the Bluetooth HCI implementation in the Linux kernel

did not properly deallocate memory in some situations. An attacker could

possibly use this cause a denial of service (memory exhaustion).

(CVE-2022-3619)

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow kernel system update ubuntu hardware enablement

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.19.0-32-generic   5.19.0-32.33~22.04.1
   linux-image-5.19.0-32-generic-64k  5.19.0-32.33~22.04.1
   linux-image-5.19.0-32-generic-lpae  5.19.0-32.33~22.04.1
   linux-image-generic-64k-hwe-22.04  5.19.0.32.33~22.04.9
   linux-image-generic-hwe-22.04   5.19.0.32.33~22.04.9
   linux-image-generic-lpae-hwe-22.04  5.19.0.32.33~22.04.9
   linux-image-virtual-hwe-22.04   5.19.0.32.33~22.04.9

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-5879-1

CVE-2022-3619, CVE-2022-3628, CVE-2022-3640, CVE-2022-3643,

CVE-2022-42895, CVE-2022-42896, CVE-2022-4378, CVE-2022-45934,

CVE-2023-0590

Severity
critical
Lowest
Low
Medium
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Critical

February 16, 2023

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow kernel system update ubuntu hardware enablement

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe-5.19/5.19.0-32.33~22.04.1

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