CVE-2021-28971

Updated: 2025-08-20 00:08:07.711095

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 PEBS status in a PEBS record is mishandled, aka CID-d88d05a9e0b6.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x MEDIUM 4.9
CVSS Version 3.x MEDIUM 5.5

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

CentOS 6 ELS kernel 2.6.32 5.5 MEDIUM Not Vulnerable 2021-11-02 14:03:33
CentOS 7 ELS kernel 3.10.0 5.5 MEDIUM Released CLSA-2024:1720468480 2024-07-23 17:33:56
CentOS 8.4 ELS kernel 4.18.0 5.5 MEDIUM Released CLSA-2022:1651145959 2022-04-28 16:00:01
CentOS 8.5 ELS kernel 4.18.0 5.5 MEDIUM Already Fixed 2025-10-24 07:18:31
CloudLinux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2022-01-27 14:14:30 Ignored due to low severity
Oracle Linux 6 ELS kernel 2.6.32 5.5 MEDIUM Ignored 2022-01-27 14:14:30 Ignored due to low severity
RHEL 7 ELS kernel 3.10.0 5.5 MEDIUM Released CLSA-2025:1750353839 2025-06-20 00:28:22
Ubuntu 16.04 ELS linux-hwe 4.15.0 5.5 MEDIUM Ignored 2022-09-28 08:02:40 Ignored due to low severity
Ubuntu 16.04 ELS linux 4.4.0 5.5 MEDIUM Not Vulnerable 2021-11-02 14:03:33 Ignored due to low severity
Ubuntu 18.04 ELS linux 4.15.0 5.5 MEDIUM Ignored 2023-03-02 04:04:04 Ignored due to low severity