CVE-2024-56563 ceph: fix cred leak in ceph_mds_check_access()
A missing credential release in the Ceph filesystem driver causes a memory leak, potentially leading to resource exhaustion and denial of service.
- 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-2024-56563?
CVE-2024-56563 is a high-severity memory corruption vulnerability in Linux kernel, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ceph: fix cred leak in ceph_mds_check_access()
get_current_cred() increments the reference counter, but the put_cred() call was missing.
Which versions are affected by CVE-2024-56563?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-56563?
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-2024-56563 being exploited?
There is no known exploitation of CVE-2024-56563 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-56563, DEBIAN-CVE-2024-56563, GHSA-35r3-xfww-vf6j, UBUNTU-CVE-2024-56563.