Description
A memory corruption vulnerability was addressed with improved locking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to execute arbitrary code with kernel privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apple | watchOS | unspecified – < 8.3 | 8.3 |
| Apple | iOS and iPadOS | unspecified – < 15.2 | 15.2 |
| Apple | macOS | unspecified – < 12.1, unspecified – < 11.6, unspecified – < 15.2, unspecified – < 2021 | 12.1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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realrodri/ExploiteameEsta ★ 0 · Apr 28, 2022
CVE-2021-30937 vulnerability checking app
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 2
- WID-SEC-2026-0631 Apple macOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 5, 2026
- WID-SEC-2022-0489 Apple iOS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 5, 2026
References
- https://support.apple.com/en-us/HT212975
- https://support.apple.com/en-us/HT212976
- https://support.apple.com/en-us/HT212978
- https://support.apple.com/en-us/HT212979
- https://support.apple.com/en-us/HT212981
- https://support.apple.com/en-us/HT212980
- http://packetstormsecurity.com/files/165475/XNU-inm_merge-Heap-Use-After-Free.html