01 Record

CVE-2021-28971

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

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.38% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 32.2% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2021-03-22 16:53Z5 YR AGO

Last updated

2024-08-03 21:55Z2 YR AGO

Reserved

2021-03-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-755Improper Handling of Exceptional ConditionsClass
CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

c02337e9c9d94d0e96ce3ca3bb7d8cd5aa50e8244d00ceef9575fc197449af69

05 Affected products

VendorProductVersionsPlatforms

debiandebian_linuxNot specified—

fedoraprojectfedoraNot specified—

linuxlinux_kernelNot specified—

netappaff_500fNot specified—

netappaff_500f_firmwareNot specified—

netappaff_a250Not specified—

netappaff_a250_firmwareNot specified—

netappcloud_backupNot specified—

netappsolidfire_baseboard_management_controller_firmwareNot specified—

redhatenterprise_linuxNot specified—

06 References

git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d88d05a9e0b6d9356e97129d4ff9942d765f46eax_refsource_MISC
lists.fedoraproject.orgFEDORA-2021-e636ce53dfhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PTRNPQTZ4GVS46SZ4OBXY5YDOGVPSTGQ/vendor-advisoryx_refsource_FEDORA
lists.fedoraproject.orgFEDORA-2021-68b0dd2373https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VCKIOXCOZGXBEZMO5LGGV5MWCHO6FT3/vendor-advisoryx_refsource_FEDORA
lists.fedoraproject.orgFEDORA-2021-9503fffad9https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T2S3I4SLRNRUQDOFYUS6IUAZMQNMPNLG/vendor-advisoryx_refsource_FEDORA
security.netapp.comhttps://security.netapp.com/advisory/ntap-20210430-0003/x_refsource_CONFIRM
lists.debian.org[debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlmailing-listx_refsource_MLIST
lists.debian.org[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlmailing-listx_refsource_MLIST

07 Fixed in

AlmaLinux 8

kernel-tools-libs-devel
Fixed in 4.18.0-348.el8

Arch Linux

linux
Fixed in 5.11.9.arch1-1
linux-hardened
Fixed in 5.11.9.hardened1-1
linux-lts
Fixed in 5.10.26-1
linux-zen
Fixed in 5.11.9.zen1-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

CloudLinux 8

kernel-tools-libs-devel
Fixed in 4.18.0-348.el8

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Debian 12

linux
Fixed in 5.10.26-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 5.10.26-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 5.10.26-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.