CVE-2021-38200 Null dereference in n/a

What is CVE-2021-38200?

CVE-2021-38200 is a medium-severity vulnerability in Linux kernel, published on 8 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

arch/powerpc/perf/core-book3s.c in the Linux kernel before 5.12.13, on systems with perf_event_paranoid=-1 and no specific PMU driver support registered, allows local users to cause a denial of service (perf_instruction_pointer NULL pointer dereference and OOPS) via a "perf record" command.

Weakness: CWE-476

Which versions are affected by CVE-2021-38200?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2021-38200?

Upgrade to a fixed version.

Is CVE-2021-38200 being exploited?

There is no known exploitation of CVE-2021-38200 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-6584, GHSA-hvvv-j3j9-xhr9, UBUNTU-CVE-2021-38200.