critical
9.3
Advisory Published
CVE Published
Updated

CVE-2021-1779

First published: Mon Feb 01 2021(Updated: )

A logic error in kext loading was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. An application may be able to execute arbitrary code with system privileges.

Credit: product-security@apple.com Csaba Fitzl @theevilbit Offensive Security

Affected SoftwareAffected VersionHow to fix
Apple macOS<11.2
11.2
macOS Catalina
macOS Mojave
Apple iOS and macOS>=10.14<10.14.6
Apple iOS and macOS>=10.15<10.15.7
Apple iOS and macOS=10.14.6
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-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-supplemental_update
macOS>=11.0<11.2

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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-2021-1779?

    CVE-2021-1779 is a vulnerability in IOKit that was addressed with improved state handling.

  • Which software versions are affected by CVE-2021-1779?

    CVE-2021-1779 affects macOS Big Sur version 11.2 exclusively, Apple Catalina, and Apple Mojave.

  • How can I fix CVE-2021-1779?

    To fix CVE-2021-1779, update your macOS Big Sur to version 11.2 or later.

  • What is the severity of CVE-2021-1779?

    The severity of CVE-2021-1779 is not specified.

  • Where can I find more information about CVE-2021-1779?

    You can find more information about CVE-2021-1779 on the official Apple support page: https://support.apple.com/en-us/HT212147

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