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

Affected SoftwareAffected VersionHow to fix
Apple iPadOS<14.6
Apple iPhone OS<14.6
Apple Mac OS X>=10.14<=10.14.5
Apple Mac OS X>=10.15<=10.15.6
Apple Mac OS X=10.14.6
Apple Mac OS X=10.14.6-security_update_2019-001
Apple Mac OS X=10.14.6-security_update_2019-002
Apple Mac OS X=10.14.6-security_update_2019-004
Apple Mac OS X=10.14.6-security_update_2019-005
Apple Mac OS X=10.14.6-security_update_2019-006
Apple Mac OS X=10.14.6-security_update_2019-007
Apple Mac OS X=10.14.6-security_update_2020-001
Apple Mac OS X=10.14.6-security_update_2020-002
Apple Mac OS X=10.14.6-security_update_2020-003
Apple Mac OS X=10.14.6-security_update_2020-004
Apple Mac OS X=10.14.6-security_update_2020-005
Apple Mac OS X=10.14.6-security_update_2020-006
Apple Mac OS X=10.14.6-security_update_2020-007
Apple Mac OS X=10.14.6-security_update_2021-001
Apple Mac OS X=10.14.6-security_update_2021-002
Apple Mac OS X=10.14.6-security_update_2021-003
Apple Mac OS X=10.14.6-security_update_2021-004
Apple Mac OS X=10.14.6-supplemental_update
Apple Mac OS X=10.14.6-supplemental_update_2
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2020-005
Apple Mac OS X=10.15.7-security_update_2020-007
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-security_update_2021-003
Apple Mac OS X=10.15.7-supplemental_update
Apple macOS>=11.0<11.4
Apple tvOS<14.6
Apple watchOS<7.5
Apple Mojave
Apple Catalina
Apple watchOS<7.5
7.5
Apple macOS Big Sur<11.4
11.4
Apple iOS<14.6
14.6
Apple iPadOS<14.6
14.6
Apple tvOS<14.6
14.6

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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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