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CVE Vulnerabilities

CVE-2026-78376

Use After Free

Published: Aug 24, 2026 | Modified: Nov 05, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
8.8 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-78376
CWEhttps://cwe.mitre.org/data/definitions/416.html

A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory handling and result in memory corruption.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
Red Hat Enterprise Linux 7 Extended Lifecycle SupportRedHatwebkitgtk4-0:2.54.0-1.el7_9*
Red Hat Enterprise Linux 8RedHatwebkit2gtk3-0:2.54.0-1.el8_10*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatwebkit2gtk3-0:2.54.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatwebkit2gtk3-0:2.54.0-1.el8_4*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatwebkit2gtk3-0:2.54.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnRedHatwebkit2gtk3-0:2.54.0-1.el8_6*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatwebkit2gtk3-0:2.54.0-1.el8_8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatwebkit2gtk3-0:2.54.0-1.el8_8*
Red Hat Enterprise Linux 9RedHatwebkit2gtk3-0:2.54.0-1.el9_8*
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsRedHatwebkit2gtk3-0:2.54.0-1.el9_2*
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsRedHatwebkit2gtk3-0:2.54.0-1.el9_4*
Red Hat Enterprise Linux 9.6 Extended Update SupportRedHatwebkit2gtk3-0:2.54.0-1.el9_6*
Qtwebkit-opensource-srcUbuntuesm-apps/bionic*
Qtwebkit-opensource-srcUbuntuesm-apps/focal*
Qtwebkit-opensource-srcUbuntuesm-apps/jammy*
Qtwebkit-opensource-srcUbuntuesm-apps/noble*
Qtwebkit-opensource-srcUbuntuesm-infra-legacy/xenial*
Qtwebkit-opensource-srcUbuntujammy*
Qtwebkit-opensource-srcUbuntunoble*
Qtwebkit-sourceUbuntuesm-apps-legacy/xenial*
Qtwebkit-sourceUbuntuesm-apps/bionic*
Webkit2gtkUbuntuesm-infra-legacy/xenial*
Webkit2gtkUbuntuesm-infra/bionic*
Webkit2gtkUbuntuesm-infra/focal*
Webkit2gtkUbuntujammy*
WebkitgtkUbuntuesm-apps-legacy/xenial*
WebkitgtkUbuntuesm-apps/bionic*
WpewebkitUbuntuesm-apps/focal*
WpewebkitUbuntuesm-apps/jammy*
WpewebkitUbuntujammy*

Potential Mitigations

References

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