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ubuntuUbuntuUSN-4916-1
HistoryApr 15, 2021 - 12:00 a.m.

Linux kernel vulnerabilities

2021-04-1500:00:00
ubuntu.com
104

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.6 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.006 Low

EPSS

Percentile

78.0%

JSON

Releases

  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM
  • Ubuntu 14.04 ESM

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud systems
  • linux-dell300x - Linux kernel for Dell 300x platforms
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe - Linux hardware enablement (HWE) kernel
  • linux-kvm - Linux kernel for cloud environments
  • linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-raspi2 - Linux kernel for Raspberry Pi (V8) systems
  • linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors

Details

It was discovered that the overlayfs implementation in the Linux kernel did
not properly validate the application of file system capabilities with
respect to user namespaces. A local attacker could use this to gain
elevated privileges. (CVE-2021-3493)

Piotr Krysiuk discovered that the BPF JIT compiler for x86 in the Linux
kernel did not properly validate computation of branch displacements in
some situations. A local attacker could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2021-29154)

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchlinux-image-4.15.0-1017-dell300x< 4.15.0-1017.21UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-1017-dell300x-dbgsym< 4.15.0-1017.21UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-1070-oracle< 4.15.0-1070.78UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-1070-oracle-dbgsym< 4.15.0-1070.78UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-1084-raspi2< 4.15.0-1084.89UNKNOWN
Ubuntu18.04noarchlinux-buildinfo-4.15.0-1084-raspi2< 4.15.0-1084.89UNKNOWN
Ubuntu18.04noarchlinux-headers-4.15.0-1084-raspi2< 4.15.0-1084.89UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-1084-raspi2-dbgsym< 4.15.0-1084.89UNKNOWN
Ubuntu18.04noarchlinux-modules-4.15.0-1084-raspi2< 4.15.0-1084.89UNKNOWN
Ubuntu18.04noarchlinux-raspi2-headers-4.15.0-1084< 4.15.0-1084.89UNKNOWN
Rows per page:
1-10 of 7251

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osv
osv
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-lts-xenial, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
2021-04-15 23:26:22
linux, linux-aws, linux-gke-5.3, linux-hwe, linux-kvm, linux-lts-xenial, linux-oem-5.6, linux-raspi2, linux-raspi2-5.3, linux-snapdragon regression
2021-04-22 03:59:34
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.3, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe, linux-hwe-5.4, linux-hwe-5.8, linux-kvm, linux-oem-5.10, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4, linux-raspi2-5.3 vulnerabilities
2021-04-15 23:35:11
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Ubuntu: Security Advisory (USN-4916-2)
2021-04-22 00:00:00
Ubuntu: Security Advisory (USN-4916-1)
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Ubuntu: Security Advisory (USN-4917-1)
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Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4916-1)
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Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-4917-1)
2021-04-16 00:00:00
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2021-04-20 00:00:00
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Linux kernel vulnerabilities
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2021-12-01 20:54:47
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K54635192 : Linux kernel overlayfs vulnerability CVE-2021-3493
2021-06-04 00:00:00
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2021-04-08 00:00:00
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2021-04-18 17:50:05
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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8.6 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

0.006 Low

EPSS

Percentile

78.0%

JSON
Related for USN-4916-1
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