CVE-2024-44969

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.6.50

Description The issue occurs when a task waiting for completion of a Store Data operation is interrupted, and an attempt to halt this operation fails due to a hardware or firmware problem. This can lead to the SCLP facility storing data into buffers referenced by the original operation at a later time, potentially resulting in a memory leak. The situation is handled by not releasing the referenced data buffers if the halt attempt fails. For current use cases, this might result in a leak of a few pages of memory in case of a rare hardware/firmware malfunction.

Recommendations Update to Linux kernel version 6.6.50 or later to resolve the issue. As a temporary workaround, consider implementing measures to minimize the risk of memory leaks, such as monitoring system resources and adjusting configuration settings to reduce the likelihood of interrupted Store Data operations.