high
7.8
CWE
415
Advisory Published
CVE Published
Updated

CVE-2021-30703: Double Free

First published: Mon May 24 2021(Updated: )

A double free issue was addressed with improved memory management. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave, macOS Big Sur 11.4, watchOS 7.5. An application may be able to execute arbitrary code with kernel privileges.

Credit: an anonymous researcher product-security@apple.com

Affected SoftwareAffected VersionHow to fix
Apple macOS<11.4
11.4
tvOS<14.6
14.6
macOS Catalina
macOS Mojave
Apple iOS, iPadOS, and watchOS<14.6
14.6
Apple iOS, iPadOS, and watchOS<14.6
14.6
Apple iOS, iPadOS, and watchOS<7.5
7.5
Apple iOS, iPadOS, and watchOS<14.6
iOS<14.6
Apple iOS and macOS>=10.14<=10.14.5
Apple iOS and macOS>=10.15<=10.15.6
Apple iOS and macOS=10.14.6
Apple iOS and macOS=10.14.6-security_update_2019-001
Apple iOS and macOS=10.14.6-security_update_2019-002
Apple iOS and macOS=10.14.6-security_update_2019-004
Apple iOS and macOS=10.14.6-security_update_2019-005
Apple iOS and macOS=10.14.6-security_update_2019-006
Apple iOS and macOS=10.14.6-security_update_2019-007
Apple iOS and macOS=10.14.6-security_update_2020-001
Apple iOS and macOS=10.14.6-security_update_2020-002
Apple iOS and macOS=10.14.6-security_update_2020-003
Apple iOS and macOS=10.14.6-security_update_2020-004
Apple iOS and macOS=10.14.6-security_update_2020-005
Apple iOS and macOS=10.14.6-security_update_2020-006
Apple iOS and macOS=10.14.6-security_update_2020-007
Apple iOS and macOS=10.14.6-security_update_2021-001
Apple iOS and macOS=10.14.6-security_update_2021-002
Apple iOS and macOS=10.14.6-security_update_2021-003
Apple iOS and macOS=10.14.6-security_update_2021-004
Apple iOS and macOS=10.14.6-supplemental_update
Apple iOS and macOS=10.14.6-supplemental_update_2
Apple iOS and macOS=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-supplemental_update
Apple iOS and macOS>=11.0<11.4
tvOS<14.6
Apple iOS, iPadOS, and watchOS<7.5

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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 CVE-2021-30703?

    CVE-2021-30703 is a vulnerability in the Kernel that allows an application to execute arbitrary code with kernel privileges.

  • Which software versions are affected by CVE-2021-30703?

    CVE-2021-30703 affects Apple Mojave, Apple tvOS up to version 14.6, Apple watchOS up to version 7.5, Apple Catalina, Apple macOS Big Sur up to version 11.4, Apple iOS up to version 14.6, and Apple iPadOS up to version 14.6.

  • How can I fix CVE-2021-30703?

    To fix CVE-2021-30703, it is recommended to update your affected software versions to the latest available versions provided by Apple.

  • Where can I find more information about CVE-2021-30703?

    You can find more information about CVE-2021-30703 on the official Apple support page.

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