CVE-2023-25739: Use After Free
Last updated 24 July 2024
Other sources
Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext.
External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2023-06/#CVE-2023-25739
— Red Hat
Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext.
The Mozilla Foundation Security Advisory describes this flaw as: Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext.
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2023-25739.
Which software is affected by this vulnerability?
This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
What is the severity level of CVE-2023-25739?
The severity level of CVE-2023-25739 is High with a severity value of 8.8.
How does this vulnerability occur?
This vulnerability occurs due to module load requests that failed not being checked as to whether or not they were cancelled causing a use-after-free in ScriptLoadContext.
How can I fix CVE-2023-25739?
To fix CVE-2023-25739, update to the latest version of Firefox, Thunderbird, or Firefox ESR.