CVE-2021-30809: Use After Free
A flaw was found in WebKitGTK. A use after free issue was addressed with improved memory management.
References: https://webkitgtk.org/security/WSA-2021-0007.html https://www.openwall.com/lists/oss-security/2021/12/20/6
Other sources
A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.
— MITRE
WebKit. A use after free issue was addressed with improved memory management.
Credit
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2021-30837
- CVE-2021-30838
- CVE-2021-30866
- CVE-2021-30834
- CVE-2021-30928
- CVE-2021-30831
- CVE-2021-30840
- CVE-2021-30841
- CVE-2021-30842
- CVE-2021-30843
- CVE-2021-30852
- CVE-2021-30814
- CVE-2021-30835
- CVE-2021-30847
- CVE-2021-30857
- CVE-2013-0340
- CVE-2021-30855
- CVE-2021-30854
- CVE-2021-30850
- CVE-2021-30808
- CVE-2021-30897
- CVE-2021-30884
- CVE-2021-30818
- CVE-2021-30823
- CVE-2021-30836
- CVE-2021-30809
- CVE-2021-30846
- CVE-2021-30849
- CVE-2021-30851
- CVE-2021-30810
- CVE-2021-30811
- CVE-2021-30882
- CVE-2021-30925
- CVE-2021-30873
- CVE-2021-30876
- CVE-2021-30879
- CVE-2021-30877
- CVE-2021-30880
- CVE-2021-30994
- CVE-2021-30907
- CVE-2021-30899
- CVE-2021-30931
- CVE-2021-30917
- CVE-2021-30903
- CVE-2021-30905
- CVE-2021-30919
- CVE-2020-9846
- CVE-2021-30881
- CVE-2021-30923
- CVE-2021-30895
- CVE-2021-30896
- CVE-2021-30933
- CVE-2021-30906
- CVE-2021-30867
- CVE-2021-30922
- CVE-2021-30824
- CVE-2021-30901
- CVE-2021-30821
- CVE-2021-30883
- CVE-2021-30924
- CVE-2021-30886
- CVE-2021-30909
- CVE-2021-30916
- CVE-2021-30864
- CVE-2021-30813
- CVE-2021-31011
- CVE-2021-30904
- CVE-2021-30910
- CVE-2021-30911
- CVE-2021-30874
- CVE-2021-30920
- CVE-2021-31004
- CVE-2021-31002
- CVE-2021-30868
- CVE-2021-30912
- CVE-2021-30913
- CVE-2021-30915
- CVE-2021-31005
- CVE-2021-31008
- CVE-2021-30848
- CVE-2021-30887
- CVE-2021-30888
- CVE-2021-30889
- CVE-2021-30861
- CVE-2021-30890
- CVE-2021-30930
- CVE-2021-30908
- CVE-2021-30833
- CVE-2021-30892
- CVE-2021-30825
- CVE-2021-30863
- CVE-2021-30816
- CVE-2021-30819
- CVE-2021-30898
- CVE-2021-30870
- CVE-2021-30815
- CVE-2021-31001
- CVE-2021-30826
Frequently Asked Questions
What is CVE-2021-30809?
CVE-2021-30809 is a vulnerability in WebKit that allows for a use-after-free attack due to a memory management issue.
Which software is affected by CVE-2021-30809?
CVE-2021-30809 affects Apple watchOS (up to version 8), Apple iOS (up to version 15), Apple iPadOS (up to version 15), Apple tvOS (up to version 15), Apple Safari (up to version 15), and Apple macOS Monterey (up to version 12.0.1).
How severe is CVE-2021-30809?
The severity of CVE-2021-30809 is not specified in the information provided.
How can I fix CVE-2021-30809?
To fix CVE-2021-30809, it is recommended to update the affected software to the latest versions provided by Apple.
Where can I find more information about CVE-2021-30809?
You can find more information about CVE-2021-30809 on the official Apple support page: [link](https://support.apple.com/en-us/HT212814).