CWE
190 416 362
Advisory Published

USN-5137-2: Linux kernel vulnerabilities

First published: Thu Nov 11 2021(Updated: )

It was discovered that the f2fs file system in the Linux kernel did not properly validate metadata in some situations. 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) or possibly execute arbitrary code. (CVE-2019-19449) It was discovered that the Infiniband RDMA userspace connection manager implementation in the Linux kernel contained a race condition leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possible execute arbitrary code. (CVE-2020-36385) Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428) Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556) Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477) It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739) It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743) It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753) It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-bluefield<5.4.0.1021.22
5.4.0.1021.22
=20.04
All of
ubuntu/linux-image-oracle-lts-20.04<5.4.0.1057.57
5.4.0.1057.57
=20.04
All of
ubuntu/linux-image-5.4.0-1021-bluefield<5.4.0-1021.24
5.4.0-1021.24
=20.04
All of
ubuntu/linux-image-raspi2<5.4.0.1046.81
5.4.0.1046.81
=20.04
All of
ubuntu/linux-image-raspi<5.4.0.1046.81
5.4.0.1046.81
=20.04
All of
ubuntu/linux-image-5.4.0-1057-oracle<5.4.0-1057.61
5.4.0-1057.61
=20.04
All of
ubuntu/linux-image-5.4.0-1046-raspi<5.4.0-1046.50
5.4.0-1046.50
=20.04
All of
ubuntu/linux-image-5.4.0-1057-oracle<5.4.0-1057.61~18.04.1
5.4.0-1057.61~18.04.1
=18.04
All of
ubuntu/linux-image-oracle<5.4.0.1057.61~18.04.37
5.4.0.1057.61~18.04.37
=18.04
All of
ubuntu/linux-image-5.4.0-1055-gke<5.4.0-1055.58~18.04.1
5.4.0-1055.58~18.04.1
=18.04
All of
ubuntu/linux-image-gke-5.4<5.4.0.1055.58~18.04.20
5.4.0.1055.58~18.04.20
=18.04
All of
ubuntu/linux-image-5.4.0-1046-raspi<5.4.0-1046.50~18.04.1
5.4.0-1046.50~18.04.1
=18.04
All of
ubuntu/linux-image-raspi-hwe-18.04<5.4.0.1046.49
5.4.0.1046.49
=18.04

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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 USN-5137-2.

  • What is the affected software?

    The affected software is the Linux kernel.

  • What are the potential impacts of this vulnerability?

    The potential impacts of this vulnerability include denial of service (system crash) and possible execution of arbitrary code.

  • How can I fix this vulnerability?

    To fix this vulnerability, you should update to the recommended version of the Linux kernel provided by Ubuntu.

  • Where can I find more information about this vulnerability?

    You can find more information about this vulnerability on the Ubuntu security advisory page.

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