The bufferdata function in WebGL is vulnerable to a buffer overflow with specific graphics drivers on Linux. This could result in malicious content freezing a tab or triggering a potentially exploitable crash. *Note: this issue only occurs on Linux. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2019-13/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-15/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-14/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1532525 | issue tracking permissions required vendor advisory |