CVE-2023-6857 (published 2023-12-19T13:38:37.621Z)
When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary. 
*This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
Affected products: Vendor: Mozilla
Product: Firefox ESR
Versions: unspecified