CVE-2021-38200

2021-08-0820:15:07

Debian Security Bug Tracker

security-tracker.debian.org

linux

kernel

denial of service

vulnerability

cve-2021-38200

perf_event_paranoid

null pointer

oops

perf record

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

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

EPSS

Percentile

5.1%

JSON

arch/powerpc/perf/core-book3s.c in the Linux kernel before 5.12.13, on systems with perf_event_paranoid=-1 and no specific PMU driver support registered, allows local users to cause a denial of service (perf_instruction_pointer NULL pointer dereference and OOPS) via a “perf record” command.

OSVersionArchitecturePackageVersionFilename
Debian12alllinux< 6.1.106-3linux_6.1.106-3_all.deb
Debian11alllinux< 5.10.223-1linux_5.10.223-1_all.deb
Debian999alllinux< 6.10.11-1linux_6.10.11-1_all.deb
Debian13alllinux< 6.10.11-1linux_6.10.11-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	linux	< 6.1.106-3	linux_6.1.106-3_all.deb
Debian	11	all	linux	< 5.10.223-1	linux_5.10.223-1_all.deb
Debian	999	all	linux	< 6.10.11-1	linux_6.10.11-1_all.deb
Debian	13	all	linux	< 6.10.11-1	linux_6.10.11-1_all.deb