USN-5302-1: Linux kernel (OEM) vulnerabilities

Published Feb 22, 2022
·
Updated

Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 releaseagent feature. A local attacker could use this to gain administrative privileges. (CVE-2022-0492) Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-43976) Wenqing Liu discovered that the f2fs file system implementation in the Linux kernel did not properly validate inode types while performing garbage collection. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2021-44879) Samuel Page discovered that the Transparent Inter-Process Communication (TIPC) protocol implementation in the Linux kernel contained a stack-based buffer overflow. A remote attacker could use this to cause a denial of service (system crash) for systems that have a TIPC bearer configured. (CVE-2022-0435) Lyu Tao discovered that the NFS implementation in the Linux kernel did not properly handle requests to open a directory on a regular file. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2022-24448) It was discovered that the YAM AX.25 device driver in the Linux kernel did not properly deallocate memory in some error conditions. A local privileged attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2022-24959)

Affected Software

9 affected componentsFixes available
Linux Kernel
All of the following
ubuntu/linux-image-oem-20.04c<5.14.0.1024.22
5.14.0.1024.22
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-20.04b<5.14.0.1024.22
5.14.0.1024.22
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-oem-20.04<5.14.0.1024.22
5.14.0.1024.22
Ubuntu Ubuntu=20.04
All of the following
ubuntu/linux-image-5.14.0-1024-oem<5.14.0-1024.26
5.14.0-1024.26
Ubuntu Ubuntu=20.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-oem-20.04c to a version that resolves this vulnerability.

    Fixed in 5.14.0.1024.22
  2. Upgrade

    Upgrade ubuntu/linux-image-oem-20.04b to a version that resolves this vulnerability.

    Fixed in 5.14.0.1024.22
  3. Upgrade

    Upgrade ubuntu/linux-image-oem-20.04d to a version that resolves this vulnerability.

    Fixed in 5.14.0.1024.22
  4. Upgrade

    Upgrade ubuntu/linux-image-oem-20.04 to a version that resolves this vulnerability.

    Fixed in 5.14.0.1024.22
  5. Upgrade

    Upgrade ubuntu/linux-image-5.14.0-1024-oem to a version that resolves this vulnerability.

    Fixed in 5.14.0-1024.26
  6. Upgrade

    Upgrade Linux kernel to a version that resolves this vulnerability.

    Patch USN-5302-1

Event History

Feb 22, 2022
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2022-0492?

The severity of CVE-2022-0492 is high.

2

How does CVE-2022-0492 impact the Linux kernel?

CVE-2022-0492 allows a local attacker to gain administrative privileges by exploiting a vulnerability in the cgroups implementation.

3

Which versions of Ubuntu Linux are affected by CVE-2022-0492?

Ubuntu Linux version 20.04 is affected by CVE-2022-0492.

4

How can I fix the CVE-2022-0492 vulnerability?

Update your Ubuntu Linux kernel to version 5.14.0.1024.22 or higher to fix the CVE-2022-0492 vulnerability.

5

Where can I find more information about CVE-2022-0492?

You can find more information about CVE-2022-0492 on the Ubuntu Security website at https://ubuntu.com/security/CVE-2022-0492.

Contact

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