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Attributed metadata history

REPORTPUBLIC METADATA

CVE-2021-22415: Huawei NPU Kernel Driver Use-After-Free

Summary In a previous advisory we disclosed multiple vulnerabilities within the NPU device’s mmap handler and discussed how it exposes sensitive kernel data. This advisory focuses on the implementation errors in the same handler. The mapping function ignores the requested size parameter and fails to back regions of the mapped virtual memory with an actual mapping. Trying to access these holes or r

Reference details

Source category
Research & news
Report title
CVE-2021-22415: Huawei NPU Kernel Driver Use-After-Free
First reported
Aug 02, 2021 00:00 UTC
Last reported
Aug 02, 2021 00:00 UTC
Catalog updated
Oct 08, 2026 03:51 UTC
Record ID
a2e59e4d19fbd07abe8f767f63e9a85896e0361d0400a88f368f3c28d03c3539

CVEs mentioned by sources

Published indicators

Network indicators are visibly defanged. This page does not make them clickable or send them to another service.

No validated file hashes or network indicators are stored for this record.

Source observations

src_350d40f2cc69277bca

Source-provided label
Not reported
Evidence class
mentioned in report
Confidence
Not reported
Observed
Aug 02, 2021 00:00 UTC
Retrieved
Oct 08, 2026 03:51 UTC

This record contains metadata and attribution only. It does not host, download, unpack, render, or execute malware samples.

Feed collection status

Sources represented on this page. Publication and observation dates describe the content; successful batch dates describe local collection. A recent batch does not certify complete coverage or current provider availability.

1 sources: 0 stale, 0 needing attention, 0 paused, 1 unverified.

Review source update dates and status
  • src_350d40f2cc69277bcaCollection status unverifiedLast successful batch: Unverified

Stale means older than twice the recorded collection interval, with a minimum of one hour; without an interval, the threshold is 24 hours. Cached content remains available while a feed is stale, paused, or unverified.