kernel: mm: prevent derefencing NULL ptr in pfn_section_valid()

A flaw was found in the Linux kernel. This flaw allows a local user to cause a Denial of Service DoS by crashing the system. A race condition during memory section deactivation in the memory management subsystem can lead to a null pointer dereference in the pfnsectionvalid function due to a missi...

SUSE CVE-2023-52489

In the Linux kernel, the following vulnerability has been resolved: mm/sparsemem: fix race in accessing memorysection-usage The below race is observed on a PFN which falls into the device memory region with the system memory configuration where PFN's are such that ZONENORMAL ZONEDEVICE ZONENORMAL...

DEBIAN-CVE-2023-52489

In the Linux kernel, the following vulnerability has been resolved: mm/sparsemem: fix race in accessing memorysection-usage The below race is observed on a PFN which falls into the device memory region with the system memory configuration where PFN's are such that ZONENORMAL ZONEDEVICE ZONENORMAL...