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MitreCVE-2021-28971

HistoryMar 22, 2021 - 5:15 p.m.

CVE-2021-28971

2021-03-2217:15:15

CWE-755

mitre

web.nvd.nist.gov

238

intel pmu

pebs

linux kernel

cve-2021-28971

nvd

haswell cpus

system crash

security advisory

CVSS2

4.9

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

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

AI Score

6.5

Confidence

High

EPSS

Percentile

14.2%

JSON

In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel through 5.11.8 on some Haswell CPUs, userspace applications (such as perf-fuzzer) can cause a system crash because the PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6.

Affected configurations

Nvd

Node

linuxlinux_kernelRange≤5.11.8

Node

fedoraprojectfedoraMatch32

fedoraprojectfedoraMatch33

fedoraprojectfedoraMatch34

Node

debiandebian_linuxMatch9.0

Node

netappcloud_backupMatch-

netappsolidfire_baseboard_management_controller_firmwareMatch-

Node

netappaff_a250_firmwareMatch-

AND

netappaff_a250Match-

Node

netappaff_500f_firmwareMatch-

AND

netappaff_500fMatch-

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
fedoraprojectfedora32cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
fedoraprojectfedora33cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
fedoraprojectfedora34cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
netappcloud_backup-cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netappsolidfire_baseboard_management_controller_firmware-cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
netappaff_a250_firmware-cpe:2.3:o:netapp:aff_a250_firmware:-:*:*:*:*:*:*:*
netappaff_a250-cpe:2.3:h:netapp:aff_a250:-:*:*:*:*:*:*:*
netappaff_500f_firmware-cpe:2.3:o:netapp:aff_500f_firmware:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
fedoraproject	fedora	32	cpe:2.3:o:fedoraproject:fedora:32:::::::*
fedoraproject	fedora	33	cpe:2.3:o:fedoraproject:fedora:33:::::::*
fedoraproject	fedora	34	cpe:2.3:o:fedoraproject:fedora:34:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*
netapp	cloud_backup	-	cpe:2.3:a:netapp:cloud_backup:-:::::::*
netapp	solidfire_baseboard_management_controller_firmware	-	cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:::::::*
netapp	aff_a250_firmware	-	cpe:2.3:o:netapp:aff_a250_firmware:-:::::::*
netapp	aff_a250	-	cpe:2.3:h:netapp:aff_a250:-:::::::*
netapp	aff_500f_firmware	-	cpe:2.3:o:netapp:aff_500f_firmware:-:::::::*