cve/2021/CVE-2021-28971.md

### [CVE-2021-28971](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28971)
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### 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.

### POC

#### Reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d88d05a9e0b6d9356e97129d4ff9942d765f46ea

#### Github
No PoCs found on GitHub currently.