CVE-2021-29632 Memory corruption in FreeBSD
A memory corruption vulnerability in the FreeBSD console allows attackers to overwrite kernel memory, potentially leading to code execution or privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-29632?
CVE-2021-29632 is a high-severity memory corruption vulnerability in Freebsd Freebsd, published on 18 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In FreeBSD 13.0-STABLE before n247428-9352de39c3dc, 12.2-STABLE before r370674, 13.0-RELEASE before p6, and 12.2-RELEASE before p12, certain conditions involving use of the highlight buffer while text is scrolling on the console, console data may overwrite data structures associated with the system console or other kernel memory.
Which versions are affected by CVE-2021-29632?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2021-29632?
No fix has been published for CVE-2021-29632 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-29632 being exploited?
There is no known exploitation of CVE-2021-29632 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-hvhc-gqfx-h3hx.