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ubuntuUbuntuUSN-4710-1
HistoryFeb 03, 2021 - 12:00 a.m.

Linux kernel vulnerability

2021-02-0300:00:00
ubuntu.com
253

4.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.3 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

Releases

  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM

Packages

  • linux - Linux kernel
  • linux-hwe - Linux hardware enablement (HWE) kernel

Details

Kiyin (尹亮) discovered that the perf subsystem in the Linux kernel did
not properly deallocate memory in some situations. A privileged attacker
could use this to cause a denial of service (kernel memory exhaustion).

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchlinux-image-4.15.0-135-generic< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchkernel-signed-image-4.15.0-135-generic-di< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-135-generic-dbgsym< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-135-lowlatency< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-135-lowlatency-dbgsym< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchlinux-image-4.15.0-135-generic-lpae< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchblock-modules-4.15.0-135-generic-di< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchcrypto-modules-4.15.0-135-generic-di< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchfat-modules-4.15.0-135-generic-di< 4.15.0-135.139UNKNOWN
Ubuntu18.04noarchfb-modules-4.15.0-135-generic-di< 4.15.0-135.139UNKNOWN
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4.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.3 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON
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