CVE-2021-1764: Use After Free

Published Jan 26, 2021
·
Updated

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause a denial of service.

Other sources

Kernel. A use after free issue was addressed with improved memory management.

Credit

@@m00nbsd

Affected Software

30 affected componentsFixes available
Apple tvOS<14.4
14.4
Apple macOS Big Sur<11.2
11.2
Apple Catalina
Apple Mojave
Apple WatchOS<7.3
7.3
Apple iOS<14.4
14.4
Apple iPadOS<14.4
14.4
Apple iPadOS<14.4
Apple iPhone OS<14.4
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
Apple macOS>=11.0<11.2
Apple tvOS<14.4
Apple WatchOS<7.3

Event History

Apr 2, 2021
CVE Published
via MITRE·05:55 PM
Data Sourced
via MITRE·05:55 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2021-1764?

CVE-2021-1764 is a vulnerability in the Kernel that allows for a use after free issue.

2

How does CVE-2021-1764 affect macOS Big Sur?

CVE-2021-1764 affects macOS Big Sur version 11.2.

3

How does CVE-2021-1764 affect Apple watchOS?

CVE-2021-1764 affects Apple watchOS up to version 7.3.

4

How does CVE-2021-1764 affect Apple iOS?

CVE-2021-1764 affects Apple iOS up to version 14.4.

5

How does CVE-2021-1764 affect Apple iPadOS?

CVE-2021-1764 affects Apple iPadOS up to version 14.4.

6

How does CVE-2021-1764 affect Apple tvOS?

CVE-2021-1764 affects Apple tvOS up to version 14.4.

7

How do I fix CVE-2021-1764?

To fix CVE-2021-1764, you should update your operating system to the latest version provided by Apple.

Company

Resources

Contact

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