CVE-2025-1931: Use After Free
First published: Tue Mar 04 2025(Updated: )
It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Firefox | <136 | |
| Firefox ESR | <115.21<128.8 | |
| Firefox ESR | <115.21 | 115.21 |
| debian/firefox | 136.0-1 | |
| debian/firefox-esr | <=115.14.0esr-1~deb11u1<=128.5.0esr-1~deb12u1 | 128.8.0esr-1~deb11u1 128.8.0esr-1~deb12u1 128.8.0esr-1 |
| debian/thunderbird | <=1:115.12.0-1~deb11u1<=1:128.5.0esr-1~deb12u1<=1:128.7.0esr-1 | 1:128.8.0esr-1~deb11u1 1:128.8.0esr-1~deb12u1 1:128.8.0esr-1 |
| Firefox ESR | <128.8 | 128.8 |
| Firefox | <136 | 136 |
| Thunderbird | <136 | 136 |
| Thunderbird | <128.8 | 128.8 |
| Firefox | <115.21.0 | |
| Firefox | <136.0 | |
| Firefox | >=116.0<128.8.0 | |
| Thunderbird | <128.8.0 | |
| Thunderbird | >=129.0<136.0 |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1944126
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-15/
- https://www.mozilla.org/security/advisories/mfsa2025-14/
- https://www.mozilla.org/security/advisories/mfsa2025-15/
- https://www.mozilla.org/security/advisories/mfsa2025-16/
- https://www.mozilla.org/security/advisories/mfsa2025-17/
- https://www.mozilla.org/security/advisories/mfsa2025-18/
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-1931
- https://nvd.nist.gov/vuln/detail/CVE-2025-1931
- https://launchpad.net/bugs/cve/CVE-2025-1931
- https://security-tracker.debian.org/tracker/CVE-2025-1931
- https://ubuntu.com/security/CVE-2025-1931
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-14/#CVE-2025-1931
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-16/#CVE-2025-1931
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-18/#CVE-2025-1931
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-16/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-14/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-17/
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-18/
- https://access.redhat.com/errata/RHSA-2025:2359
- https://access.redhat.com/errata/RHSA-2025:2452
- https://access.redhat.com/errata/RHSA-2025:2481
- https://access.redhat.com/errata/RHSA-2025:2480
- https://access.redhat.com/errata/RHSA-2025:2479
- https://access.redhat.com/errata/RHSA-2025:2485
- https://access.redhat.com/errata/RHSA-2025:2484
- https://access.redhat.com/errata/RHSA-2025:2486
- https://access.redhat.com/errata/RHSA-2025:2699
- https://access.redhat.com/errata/RHSA-2025:2708
- https://bugzilla.redhat.com/show_bug.cgi?id=2349786
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2025-1931?
CVE-2025-1931 has been categorized as a potentially exploitable vulnerability that can lead to a crash.
How do I fix CVE-2025-1931?
To fix CVE-2025-1931, upgrade to Mozilla Firefox version 136 or Mozilla Firefox ESR versions 115.21 or 128.8.
What causes CVE-2025-1931?
CVE-2025-1931 is caused by a use-after-free error in the content process of a WebTransport connection.
Which software versions are affected by CVE-2025-1931?
Affected software includes Mozilla Firefox versions up to 136 and Mozilla Firefox ESR versions up to 115.21 and 128.8.
Can CVE-2025-1931 be exploited remotely?
Yes, CVE-2025-1931 may potentially be exploited remotely, leading to a crash of the affected application.
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