CVE-2020-26952 Memory corruption in Firefox
Incorrect JIT bookkeeping during out-of-memory handling can cause memory corruption, potentially allowing code execution or crashes in Firefox.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-26952?
CVE-2020-26952 is a high-severity memory corruption vulnerability in Mozilla Firefox, published on 9 Dec 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption and a potentially exploitable crash when handling out-of-memory errors. This vulnerability affects Firefox < 83.
Weakness: CWE-787
Which versions are affected by CVE-2020-26952?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2020-26952?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-26952 being exploited?
There is no known exploitation of CVE-2020-26952 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-gqgc-5jm8-qf2w, UBUNTU-CVE-2020-26952.