critical
9.3
CWE
787
Advisory Published
Updated

CVE-2021-30937

First published: Tue Aug 24 2021(Updated: )

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.

Credit: Sergei Glazunov Google Project Zero cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Apple macOS Monterey<12.1
12.1
Apple macOS<11.6.2
11.6.2
tvOS<15.2
15.2
macOS Catalina
Apple iOS, iPadOS, and watchOS<15.2
15.2
Apple iOS, iPadOS, and watchOS<15.2
15.2
Apple iOS, iPadOS, and watchOS<8.3
8.3
Apple iOS, iPadOS, and watchOS<15.2
iStyle @cosme iPhone OS<15.2
Apple iOS and macOS>=10.15<=10.15.7
Apple iOS and macOS=10.15.7-security_update_2020
Apple iOS and macOS=10.15.7-security_update_2020-001
Apple iOS and macOS=10.15.7-security_update_2020-005
Apple iOS and macOS=10.15.7-security_update_2020-007
Apple iOS and macOS=10.15.7-security_update_2021-001
Apple iOS and macOS=10.15.7-security_update_2021-002
Apple iOS and macOS=10.15.7-security_update_2021-003
Apple iOS and macOS=10.15.7-security_update_2021-006
Apple iOS and macOS=10.15.7-security_update_2021-007
Apple iOS and macOS>=11.0<11.6.2
Apple iOS and macOS>=12.0<12.1
tvOS<15.2
Apple iOS, iPadOS, and watchOS<8.3

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID?

    The vulnerability ID is CVE-2021-30937.

  • What is the severity of CVE-2021-30937?

    The severity of CVE-2021-30937 is not mentioned in the description.

  • What software versions are affected by CVE-2021-30937?

    The vulnerability affects macOS Big Sur 11.6.2, macOS Monterey 12.1, Apple Catalina, iOS up to 15.2, iPadOS up to 15.2, watchOS up to 8.3, and tvOS up to 15.2.

  • How was CVE-2021-30937 addressed?

    The vulnerability was addressed with improved locking.

  • Where can I find more information about CVE-2021-30937?

    More information about CVE-2021-30937 can be found at the following references: [link1](https://support.apple.com/en-us/HT212978), [link2](https://support.apple.com/en-us/HT212980), [link3](https://support.apple.com/en-us/HT212979).

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