CVE-2022-22674 — Apple macOS Out-of-Bounds Read Vulnerability

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Monterey 12.3.1, Security Update 2022-004 Catalina, macOS Big Sur 11.6.6. A local user may be able to read kernel memor

01What is this vulnerability?

An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. This issue is fixed in macOS Monterey 12.3.1, Security Update 2022-004 Catalina, macOS Big Sur 11.6.6. A local user may be able to read kernel memory.

02Affected products

Vendor	Product	Versions
Apple	macOS	unspecified
Apple	macOS	unspecified
Apple	macOS	unspecified

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-04-04. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-05-26T17:43:37.000Z
• Last modified: 2025-10-21T23:15:39.269Z
• Added to CISA KEV: 2022-04-04
• BOD 22-01 due: 2022-04-25

09References

• support.apple.com — https://support.apple.com/en-us/HT213255
• support.apple.com — https://support.apple.com/en-us/HT213256
• support.apple.com — https://support.apple.com/en-us/HT213220