Uninitialized memory in the Audio/Video component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
Weakness
The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | * | 115.42.0 (excluding) |
| Firefox | Mozilla | 116.0 (including) | 140.17.0 (excluding) |
| Firefox | Mozilla | 141.0 (including) | 153.4.0 (excluding) |
| Firefox | Mozilla | 154.0.0 (including) | 157.0.0 (excluding) |
| Thunderbird | Mozilla | * | 140.17.0 (excluding) |
| Thunderbird | Mozilla | 141.0 (including) | 153.4.0 (excluding) |
| Thunderbird | Mozilla | 154.0 (including) | 157.0 (excluding) |
| Mozjs102 | Ubuntu | esm-apps/noble | * |
| Mozjs102 | Ubuntu | jammy | * |
| Mozjs102 | Ubuntu | noble | * |
| Mozjs115 | Ubuntu | noble | * |
| Mozjs52 | Ubuntu | esm-apps/focal | * |
| Mozjs52 | Ubuntu | esm-infra/bionic | * |
| Mozjs68 | Ubuntu | esm-infra/focal | * |
| Mozjs78 | Ubuntu | esm-apps/jammy | * |
| Mozjs78 | Ubuntu | jammy | * |
| Mozjs91 | Ubuntu | jammy | * |
| Thunderbird | Ubuntu | jammy | * |
Potential Mitigations
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2069804
- https://www.mozilla.org/security/advisories/mfsa2026-100/
- https://www.mozilla.org/security/advisories/mfsa2026-101/
- https://www.mozilla.org/security/advisories/mfsa2026-102/
- https://www.mozilla.org/security/advisories/mfsa2026-103/
- https://www.mozilla.org/security/advisories/mfsa2026-97/
- https://www.mozilla.org/security/advisories/mfsa2026-98/
- https://www.mozilla.org/security/advisories/mfsa2026-99/