CWE
416 362
Advisory Published

USN-4387-1: Linux kernel vulnerabilities

First published: Wed Jun 10 2020(Updated: )

It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) Piotr Krysiuk discovered that race conditions existed in the file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12114) It was discovered that the USB susbsystem's scatter-gather implementation in the Linux kernel did not properly take data references in some situations, leading to a use-after-free. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-12464) Bui Quang Minh discovered that the XDP socket implementation in the Linux kernel did not properly validate meta-data passed from user space, leading to an out-of-bounds write vulnerability. A local attacker with the CAP_NET_ADMIN capability could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-12659)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-5.3.0-1023-aws<5.3.0-1023.25
5.3.0-1023.25
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-1023-kvm<5.3.0-1023.25
5.3.0-1023.25
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-1024-oracle<5.3.0-1024.26
5.3.0-1024.26
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-1026-gcp<5.3.0-1026.28
5.3.0-1026.28
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-1026-raspi2<5.3.0-1027.29
5.3.0-1027.29
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-1028-azure<5.3.0-1028.29
5.3.0-1028.29
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-59-generic<5.3.0-59.53
5.3.0-59.53
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-59-generic-lpae<5.3.0-59.53
5.3.0-59.53
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-59-lowlatency<5.3.0-59.53
5.3.0-59.53
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-59-snapdragon<5.3.0-59.53
5.3.0-59.53
Ubuntu=19.10
All of
ubuntu/linux-image-aws<5.3.0.1023.34
5.3.0.1023.34
Ubuntu=19.10
All of
ubuntu/linux-image-azure<5.3.0.1028.47
5.3.0.1028.47
Ubuntu=19.10
All of
ubuntu/linux-image-gcp<5.3.0.1026.37
5.3.0.1026.37
Ubuntu=19.10
All of
ubuntu/linux-image-generic<5.3.0.59.49
5.3.0.59.49
Ubuntu=19.10
All of
ubuntu/linux-image-generic-lpae<5.3.0.59.49
5.3.0.59.49
Ubuntu=19.10
All of
ubuntu/linux-image-gke<5.3.0.1026.37
5.3.0.1026.37
Ubuntu=19.10
All of
ubuntu/linux-image-kvm<5.3.0.1023.21
5.3.0.1023.21
Ubuntu=19.10
All of
ubuntu/linux-image-lowlatency<5.3.0.59.49
5.3.0.59.49
Ubuntu=19.10
All of
ubuntu/linux-image-oracle<5.3.0.1024.40
5.3.0.1024.40
Ubuntu=19.10
All of
ubuntu/linux-image-raspi2<5.3.0.1027.25
5.3.0.1027.25
Ubuntu=19.10
All of
ubuntu/linux-image-snapdragon<5.3.0.59.49
5.3.0.59.49
Ubuntu=19.10
All of
ubuntu/linux-image-virtual<5.3.0.59.49
5.3.0.59.49
Ubuntu=19.10
All of
ubuntu/linux-image-5.3.0-1023-aws<5.3.0-1023.25~18.04.1
5.3.0-1023.25~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-1024-oracle<5.3.0-1024.26~18.04.1
5.3.0-1024.26~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-1026-gcp<5.3.0-1026.28~18.04.1
5.3.0-1026.28~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-1026-gke<5.3.0-1026.28~18.04.1
5.3.0-1026.28~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-1026-raspi2<5.3.0-1026.28~18.04.1
5.3.0-1026.28~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-1028-azure<5.3.0-1028.29~18.04.1
5.3.0-1028.29~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-59-generic<5.3.0-59.53~18.04.1
5.3.0-59.53~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-59-generic-lpae<5.3.0-59.53~18.04.1
5.3.0-59.53~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-5.3.0-59-lowlatency<5.3.0-59.53~18.04.1
5.3.0-59.53~18.04.1
Ubuntu=18.04
All of
ubuntu/linux-image-aws<5.3.0.1023.23
5.3.0.1023.23
Ubuntu=18.04
All of
ubuntu/linux-image-azure<5.3.0.1028.25
5.3.0.1028.25
Ubuntu=18.04
All of
ubuntu/linux-image-gcp<5.3.0.1026.21
5.3.0.1026.21
Ubuntu=18.04
All of
ubuntu/linux-image-generic-hwe-18.04<5.3.0.59.113
5.3.0.59.113
Ubuntu=18.04
All of
ubuntu/linux-image-generic-lpae-hwe-18.04<5.3.0.59.113
5.3.0.59.113
Ubuntu=18.04
All of
ubuntu/linux-image-gke-5.3<5.3.0.1026.13
5.3.0.1026.13
Ubuntu=18.04
All of
ubuntu/linux-image-gkeop-5.3<5.3.0.59.113
5.3.0.59.113
Ubuntu=18.04
All of
ubuntu/linux-image-lowlatency-hwe-18.04<5.3.0.59.113
5.3.0.59.113
Ubuntu=18.04
All of
ubuntu/linux-image-oracle<5.3.0.1024.22
5.3.0.1024.22
Ubuntu=18.04
All of
ubuntu/linux-image-raspi2-hwe-18.04<5.3.0.1027.16
5.3.0.1027.16
Ubuntu=18.04
All of
ubuntu/linux-image-snapdragon-hwe-18.04<5.3.0.59.113
5.3.0.59.113
Ubuntu=18.04
All of
ubuntu/linux-image-virtual-hwe-18.04<5.3.0.59.113
5.3.0.59.113
Ubuntu=18.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-4387-1?

    USN-4387-1 addresses a vulnerability that could potentially lead to the exposure of sensitive kernel memory, which may be considered of high severity.

  • How do I fix USN-4387-1?

    To fix USN-4387-1, update your Ubuntu system to the patched versions of the affected Linux kernel packages.

  • Which Ubuntu versions are affected by USN-4387-1?

    USN-4387-1 affects Ubuntu version 19.10 and several derivatives that utilize the vulnerable kernel packages.

  • What are the implications of USN-4387-1?

    The implications of USN-4387-1 include potential risks related to the unauthorized access of sensitive information from kernel memory.

  • Is there a specific CVE associated with USN-4387-1?

    Yes, USN-4387-1 is associated with the CVEs CVE-2020-0067, CVE-2020-0543, and CVE-2020-12114.

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