{"cve":"CVE-2021-38200","nvd":{"published":"2021-08-08T20:15:07.110","modified":"2026-06-17T04:01:44.880","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13","https://github.com/torvalds/linux/commit/60b7ed54a41b550d50caf7f2418db4a7e75b5bdc","https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13","https://github.com/torvalds/linux/commit/60b7ed54a41b550d50caf7f2418db4a7e75b5bdc"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-38200","score":0.00255,"percentile":0.17171,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}