CWE
119 190 416 476
Advisory Published

USN-5708-1: backport-iwlwifi-dkms vulnerabilities

First published: Tue Nov 01 2022(Updated: )

Sönke Huster discovered that an integer overflow vulnerability existed in the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-41674) Sönke Huster discovered that a use-after-free vulnerability existed in the WiFi driver stack in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42719) Sönke Huster discovered that the WiFi driver stack in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-42720) Sönke Huster discovered that the WiFi driver stack in the Linux kernel did not properly handle BSSID/SSID lists in some situations. A physically proximate attacker could use this to cause a denial of service (infinite loop). (CVE-2022-42721) Sönke Huster discovered that the WiFi driver stack in the Linux kernel contained a NULL pointer dereference vulnerability in certain situations. A physically proximate attacker could use this to cause a denial of service (system crash). This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.10. (CVE-2022-42722)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/backport-iwlwifi-dkms<9904-0ubuntu3.1
9904-0ubuntu3.1
=22.10
All of
ubuntu/backport-iwlwifi-dkms<9858-0ubuntu3.1
9858-0ubuntu3.1
=22.04
All of
ubuntu/backport-iwlwifi-dkms<8324-0ubuntu3~20.04.5
8324-0ubuntu3~20.04.5
=20.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this advisory?

    The vulnerability ID for this advisory is CVE-2022-41674.

  • What is the severity of CVE-2022-41674?

    The severity of CVE-2022-41674 is high.

  • How does CVE-2022-41674 impact the affected software?

    CVE-2022-41674 allows a physically proximate attacker to cause a denial of service (system crash) or possibly execute arbitrary code.

  • How can I fix the vulnerability?

    To fix the vulnerability, update the backport-iwlwifi-dkms package to version 9904-0ubuntu3.1 (for Ubuntu 22.10), 9858-0ubuntu3.1 (for Ubuntu 22.04), or 8324-0ubuntu3~20.04.5 (for Ubuntu 20.04).

  • Where can I find more information about CVE-2022-41674?

    You can find more information about CVE-2022-41674 at the following link: [CVE-2022-41674](https://ubuntu.com/security/CVE-2022-41674).

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