CVE-2025-1012: Use After Free
First published: Tue Feb 04 2025(Updated: )
A race during concurrent delazification could have led to a use-after-free.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/firefox | 135.0-1 | |
| debian/firefox-esr | <=115.14.0esr-1~deb11u1<=128.5.0esr-1~deb12u1 | 128.7.0esr-1~deb11u1 128.7.0esr-1~deb12u1 128.7.0esr-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~deb11u1 1:128.7.0esr-1~deb12u1 |
| Thunderbird | <128.7 | 128.7 |
| Thunderbird | <135 | 135 |
| Firefox | <115.20.0 | |
| Firefox | <135.0 | |
| Firefox | >=128.1.0<128.7.0 | |
| Thunderbird | <135.0 | |
| Thunderbird | >=128.0.1<128.7.0 | |
| Firefox | <135 | 135 |
| Firefox ESR | <128.7 | 128.7 |
| Firefox ESR | <115.20 | 115.20 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1939710
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-08/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-11/
- https://www.mozilla.org/security/advisories/mfsa2025-07/
- https://www.mozilla.org/security/advisories/mfsa2025-08/
- https://www.mozilla.org/security/advisories/mfsa2025-09/
- https://www.mozilla.org/security/advisories/mfsa2025-10/
- https://www.mozilla.org/security/advisories/mfsa2025-11/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-1012
- https://nvd.nist.gov/vuln/detail/CVE-2025-1012
- https://launchpad.net/bugs/cve/CVE-2025-1012
- https://security-tracker.debian.org/tracker/CVE-2025-1012
- https://ubuntu.com/security/CVE-2025-1012
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-07/#CVE-2025-1012
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-09/#CVE-2025-1012
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-10/#CVE-2025-1012
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-10/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-07/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-09/
- https://access.redhat.com/errata/RHSA-2025:1066
- https://access.redhat.com/errata/RHSA-2025:1133
- https://access.redhat.com/errata/RHSA-2025:1135
- https://access.redhat.com/errata/RHSA-2025:1138
- https://access.redhat.com/errata/RHSA-2025:1136
- https://access.redhat.com/errata/RHSA-2025:1132
- https://access.redhat.com/errata/RHSA-2025:1137
- https://access.redhat.com/errata/RHSA-2025:1139
- https://access.redhat.com/errata/RHSA-2025:1140
- https://access.redhat.com/errata/RHSA-2025:1184
- https://access.redhat.com/errata/RHSA-2025:1283
- https://access.redhat.com/errata/RHSA-2025:1292
- https://access.redhat.com/errata/RHSA-2025:1319
- https://access.redhat.com/errata/RHSA-2025:1317
- https://access.redhat.com/errata/RHSA-2025:1318
- https://access.redhat.com/errata/RHSA-2025:1339
- https://access.redhat.com/errata/RHSA-2025:1340
- https://access.redhat.com/errata/RHSA-2025:1341
- https://access.redhat.com/errata/RHSA-2025:1348
- https://bugzilla.redhat.com/show_bug.cgi?id=2343765
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2025-1012?
CVE-2025-1012 is classified as a critical vulnerability due to potential use-after-free conditions.
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.
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.
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.
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.
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