On arm64, WASM code could have resulted in incorrect assembly generation leading to a register allocation problem, and a potentially exploitable crash. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://www.mozilla.org/security/advisories/mfsa2022-20/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2022-22/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2022-21/ | vendor advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1766806 | issue tracking permissions required vendor advisory |