CVE-2023-6856
19.12.2023, 14:15
The WebGL `DrawElementsInstanced` method was susceptible to a heap buffer overflow when used on systems with the Mesa VM driver. This issue could allow an attacker to perform remote code execution and sandbox escape. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.Enginsight
Vendor | Product | Version |
---|---|---|
mozilla | firefox | 𝑥 < 121.0 |
mozilla | firefox_esr | 𝑥 < 115.6 |
mozilla | thunderbird | 𝑥 < 115.6 |
debian | debian_linux | 10.0 |
debian | debian_linux | 11.0 |
debian | debian_linux | 12.0 |
𝑥
= Vulnerable software versions

Debian Releases
Debian Product | |||||||||||||
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firefox |
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firefox-esr |
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thunderbird |
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Ubuntu Releases
Ubuntu Product | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
firefox |
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mozjs102 |
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mozjs38 |
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mozjs52 |
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mozjs68 |
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mozjs78 |
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mozjs91 |
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thunderbird |
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Common Weakness Enumeration
References