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CVE Vulnerabilities

CVE-2022-40960

Use After Free

Published: Dec 22, 2022 | Modified: Apr 15, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2022-40960
CWEhttps://cwe.mitre.org/data/definitions/416.html

Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

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 Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.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
FirefoxMozilla*105.0 (excluding)
Firefox_esrMozilla*102.3 (excluding)
ThunderbirdMozilla*102.3 (excluding)
Red Hat Enterprise Linux 7RedHatthunderbird-0:102.3.0-3.el7_9*
Red Hat Enterprise Linux 7RedHatfirefox-0:102.3.0-6.el7_9*
Red Hat Enterprise Linux 8RedHatfirefox-0:102.3.0-6.el8_6*
Red Hat Enterprise Linux 8RedHatthunderbird-0:102.3.0-3.el8_6*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatfirefox-0:102.3.0-6.el8_1*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatthunderbird-0:102.3.0-3.el8_1*
Red Hat Enterprise Linux 8.2 Extended Update SupportRedHatfirefox-0:102.3.0-6.el8_2*
Red Hat Enterprise Linux 8.2 Extended Update SupportRedHatthunderbird-0:102.3.0-3.el8_2*
Red Hat Enterprise Linux 8.4 Extended Update SupportRedHatfirefox-0:102.3.0-6.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update SupportRedHatthunderbird-0:102.3.0-3.el8_4*
Red Hat Enterprise Linux 9RedHatfirefox-0:102.3.0-6.el9_0*
Red Hat Enterprise Linux 9RedHatthunderbird-0:102.3.0-3.el9_0*
FirefoxUbuntubionic*
FirefoxUbuntufocal*
FirefoxUbuntutrusty*
FirefoxUbuntuupstream*
FirefoxUbuntuxenial*
ThunderbirdUbuntubionic*
ThunderbirdUbuntufocal*
ThunderbirdUbuntujammy*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuupstream*
ThunderbirdUbuntuxenial*

Potential Mitigations

References

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