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MEDIUM · 5.5

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 PEB...

Vulnerability 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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
LinuxLinux Kernel<= 5.11.8
FedoraprojectFedora32
DebianDebian Linux9.0
NetappCloud Backup-
NetappSolidfire Baseboard Management Controller Firmware-
NetappAff A250 Firmware-
NetappAff A250-
NetappAff 500F Firmware-
NetappAff 500F-

Related Weaknesses (CWE)

CWE-755

References

FAQ

What is CVE-2021-28971?

CVE-2021-28971 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 PEB...

How severe is CVE-2021-28971?

CVE-2021-28971 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-28971?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Debian Debian Linux, Netapp Cloud Backup, Netapp Solidfire Baseboard Management Controller Firmware.