Description
When generating the assembly code for <code>MLoadTypedArrayElementHole</code>, an incorrect AliasSet was used. In conjunction with another vulnerability this could have been used for an out of bounds memory read. This vulnerability affects Thunderbird < 91.8, Firefox < 99, and Firefox ESR < 91.8.
References (4)
Core 4
Core References
Exploit, Issue Tracking, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1756957
Exploit, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-13/
Exploit, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-14/
Exploit, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-15/
Scores
CVSS v3
6.5
EPSS
0.0027
EPSS Percentile
50.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-125
Status
published
Products (3)
mozilla/firefox
< 99.0
mozilla/firefox_esr
< 91.8
mozilla/thunderbird
< 91.8
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026