CVE-2024-44969 s390/sclp: Prevent release of buffer in I/O
A memory leak in the Linux kernel s390/sclp driver can cause denial of service if a hardware halt attempt fails during interrupted I/O operations.
- 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-2024-44969?
CVE-2024-44969 is a medium-severity memory corruption vulnerability in Linux kernel, published on 4 Sep 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:
s390/sclp: Prevent release of buffer in I/O
When a task waiting for completion of a Store Data operation is interrupted, an attempt is made to halt this operation. If this attempt fails due to a hardware or firmware problem, there is a chance that the SCLP facility might store data into buffers referenced by the original operation at a later time.
Handle this situation by not releasing the referenced data buffers if the halt attempt fails. For current use cases, this might result in a leak of few pages of memory in case of a rare hardware/firmware malfunction.
Weakness: CWE-401
Which versions are affected by CVE-2024-44969?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-44969?
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-2024-44969 being exploited?
There is no known exploitation of CVE-2024-44969 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-49881, BELL-CVE-2024-44969, DEBIAN-CVE-2024-44969, GHSA-4w3q-gj3x-9575, ROOT-OS-DEBIAN-11-CVE-2024-44969, UBUNTU-CVE-2024-44969.