CVE-2024-38543

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A null pointer dereference bug can occur in the Linux kernel when the physical memory runs out, causing the kcalloc() function in dmirror device evict chunk() to return null. If src pfns or dst pfns is dereferenced, this bug will happen. Moreover, if the kcalloc() fails, the pages mapping a chunk could not be evicted. To resolve this issue, a GFP NOFAIL flag is added to kcalloc(), and kcalloc() is switched to kvcalloc() to avoid failing allocations due to the lack of need for physically contiguous memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.