CVE-2021-29945: Medium severity thunderbird vulnerability
The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.
Other sources
The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. Note: This issue only affected x86-32 platforms. Other platforms are unaffected.. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-29945.
What is the severity level of CVE-2021-29945?
CVE-2021-29945 has a severity level of medium.
Which platforms are affected by CVE-2021-29945?
Only x86-32 platforms are affected by CVE-2021-29945. Other platforms are unaffected.
Which software products are affected by CVE-2021-29945?
Mozilla Thunderbird (up to version 78.10), Mozilla Firefox ESR (up to version 78.10), and Mozilla Firefox (up to version 88) are affected by CVE-2021-29945.
How can I fix the CVE-2021-29945 vulnerability?
To fix the CVE-2021-29945 vulnerability, update Mozilla Thunderbird to version 78.10, Mozilla Firefox ESR to version 78.10, or Mozilla Firefox to version 88.