VULNERABILITY INTELLIGENCE

CVE-2021-28971

CVSS score5.5 MEDIUM
EPSS probability0.39%
CISA KEVNot currently listed
Published2021-03-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-755

Primary references