In intelpmudrainpebsnhm 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.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-28971.json"
[
{
"signature_type": "Function",
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@d88d05a9e0b6d9356e97129d4ff9942d765f46ea",
"digest": {
"function_hash": "210057673688847813647245636584758304618",
"length": 2089.0
},
"id": "CVE-2021-28971-95373036",
"deprecated": false,
"target": {
"file": "arch/x86/events/intel/ds.c",
"function": "intel_pmu_drain_pebs_nhm"
}
},
{
"signature_type": "Line",
"signature_version": "v1",
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git@d88d05a9e0b6d9356e97129d4ff9942d765f46ea",
"digest": {
"line_hashes": [
"36014806074225808427310264087374689730",
"42215726207328180642477121104795742211",
"197436153246271124471931523393889920675",
"307393345652770435633411234748135831886"
],
"threshold": 0.9
},
"id": "CVE-2021-28971-cdbdbe7c",
"deprecated": false,
"target": {
"file": "arch/x86/events/intel/ds.c"
}
}
]