Vulnerability identifier: #VU64830

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-28971

CWE-ID: CWE-400

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to mishandling of PEBS status in a PEBS record In intel_pmu_drain_pebs_nhm in arch/x86/events/intel/ds.c in the Linux kernel. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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CPE

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d88d05a9e0b6d9356e97129d4ff9942d765f46ea
http://bugzilla.redhat.com/show_bug.cgi?id=1941784

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?