CVE-2025-9179
Publication date 20 August 2025
Last updated 26 August 2025
Ubuntu priority
An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process. This vulnerability affects Firefox < 142, Firefox ESR < 115.27, Firefox ESR < 128.14, Firefox ESR < 140.2, Thunderbird < 142, Thunderbird < 128.14, and Thunderbird < 140.2.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| firefox | 25.04 plucky |
Not affected
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Not affected
|
|
| thunderbird | 25.04 plucky |
Not affected
|
| 24.04 LTS noble |
Not affected
|
|
| 22.04 LTS jammy |
Vulnerable
|
|
| mozjs38 | 25.04 plucky | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 18.04 LTS bionic |
Needs evaluation
|
|
| mozjs52 | 25.04 plucky | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Ignored | |
| 18.04 LTS bionic | Ignored | |
| mozjs68 | 25.04 plucky | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 20.04 LTS focal | Ignored | |
| mozjs78 | 25.04 plucky | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Ignored | |
| mozjs91 | 25.04 plucky | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Ignored | |
| mozjs102 | 25.04 plucky | Not in release |
| 24.04 LTS noble | Ignored | |
| 22.04 LTS jammy | Ignored | |
| mozjs115 | 25.04 plucky | Ignored |
| 24.04 LTS noble | Ignored | |
| 22.04 LTS jammy | Not in release |
Notes
mdeslaur
mozjs* contain a copy of the SpiderMonkey JavaScript engine. It is not feasible to backport security fixes to the mozjs* packages, as such, marking them as ignored. starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap starting with Ubuntu 24.04, the thunderbird package is just a script that installs the Thunderbird snap
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
9.8 · Critical
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2025-9179
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-66/#CVE-2025-9179
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-64/#CVE-2025-9179
- https://www.mozilla.org/en-US/security/advisories/mfsa2025-71/#CVE-2025-9179
- https://bugzilla.mozilla.org/show_bug.cgi?id=1979527
- https://www.mozilla.org/security/advisories/mfsa2025-64/
- https://www.mozilla.org/security/advisories/mfsa2025-65/
- https://www.mozilla.org/security/advisories/mfsa2025-66/
- https://www.mozilla.org/security/advisories/mfsa2025-67/
- https://www.mozilla.org/security/advisories/mfsa2025-70/
- https://www.mozilla.org/security/advisories/mfsa2025-71/
- https://www.mozilla.org/security/advisories/mfsa2025-72/