CVE-2025-1012: Use-after-free during concurrent delazification
Published Feb 4, 2025
·Updated
A race during concurrent delazification could have led to a use-after-free.
Affected Software
13 affected componentsFixes available
debian/firefox
135.0-1
debian/firefox-esr<=115.14.0esr-1~deb11u1, <=128.5.0esr-1~deb12u1
128.7.0esr-1~deb11u1128.7.0esr-1~deb12u1128.7.0esr-1
debian/thunderbird<=1:115.12.0-1~deb11u1, <=1:128.5.0esr-1~deb12u1, <=1:128.6.0esr-1
1:128.7.0esr-1~deb11u11:128.7.0esr-1~deb12u1
Mozilla Thunderbird<128.7
128.7
Mozilla Firefox<115.20.0
Mozilla Firefox<135.0
Mozilla Firefox>=128.1.0<128.7.0
Mozilla Thunderbird<135.0
Mozilla Thunderbird>=128.0.1<128.7.0
Mozilla Firefox<135
135
Mozilla Firefox ESR<128.7
128.7
Mozilla Firefox ESR<115.20
115.20
Mozilla Thunderbird<135
135
Event History
Feb 4, 2025
CVE Published
via Mozilla·12:00 AM
CVE Published
via MITRE·01:58 PM
Data Sourced
via MITRE·01:58 PM
Description
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via Red Hat·03:02 PM
DescriptionSeverityAffected Software
Feb 11, 2025
Data Sourced
via Ubuntu·05:04 AM
RemedyDescriptionSeverityAffected Software
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
1
What is the severity of CVE-2025-1012?
CVE-2025-1012 is classified as a critical vulnerability due to potential use-after-free conditions.
2
How do I fix CVE-2025-1012?
To fix CVE-2025-1012, update to the latest version of Firefox or Thunderbird as specified in the advisory.
3
Which software versions are affected by CVE-2025-1012?
CVE-2025-1012 affects Firefox versions below 135, Firefox ESR versions below 115.20, and Thunderbird versions below 135.
4
What kind of threat does CVE-2025-1012 pose?
CVE-2025-1012 poses a threat of exploitation through use-after-free vulnerabilities during concurrent operations.
5
Is CVE-2025-1012 currently being actively exploited?
At this time, there are no public reports indicating that CVE-2025-1012 is being actively exploited in the wild.