A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4945-1 webkit2gtk security update
EUVD EUVD EUVD-2021-8951 A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
Ubuntu USN Ubuntu USN USN-5024-1 WebKitGTK vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00164}

epss

{'score': 0.00154}


Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0015}

epss

{'score': 0.00164}


Mon, 07 Jul 2025 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: talos

Published:

Updated: 2024-08-03T18:23:29.206Z

Reserved: 2021-01-04T00:00:00

Link: CVE-2021-21779

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-07-08T12:15:09.903

Modified: 2024-11-21T05:48:57.273

Link: CVE-2021-21779

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-07-28T00:00:00Z

Links: CVE-2021-21779 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses