CVE-2021-29649 Memory corruption in n/a
A memory leak in the Linux kernel's user mode driver allows attackers to cause a denial of service via resource exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-29649?
CVE-2021-29649 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 30 Mar 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Linux kernel before 5.11.11. The user mode driver (UMD) has a copy_process() memory leak, related to a lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c, aka CID-f60a85cad677.
Weakness: CWE-401
Which versions are affected by CVE-2021-29649?
It affects 2 products.
Products include Fedoraproject Fedora, Linux kernel.
How do I fix CVE-2021-29649?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-29649 being exploited?
There is no known exploitation of CVE-2021-29649 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as AZL-6552, DEBIAN-CVE-2021-29649, GHSA-vqfm-ggp3-m2h4, UBUNTU-CVE-2021-29649.