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Attributed metadata history

REPORTPUBLIC METADATA

CVE-2021-22390: Huawei NPU Kernel Driver Use-After-Free

Summary Due to a bug in the way mappings are closed it is possible to free a kmallocated memory chunk arbitrary times. This vulnerability can be used to craft a use after free scenario against any kernel structure that is allocated from the kmalloc-64 cache. There is rich public literature on how such use after free vulnerabilities can be utilized to compromise the kernel, achieve code execution i

Reference details

Source category
Research & news
Report title
CVE-2021-22390: 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
78dc509d21752665ce62084360227ec64f248980783a9881767c56d0c8d02e23

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.