CVE-2022-48991

The CVE-2022-48991 entry corresponds to a Linux kernel issue in mm/khugepaged where MMU notifiers must be invoked in shmem/file collapse paths. The vulnerability could allow page use-after-free on pages mirrored by secondary MMUs (e.g., KVM) if present PTEs are removed without proper notification...

CVE-2022-48991 mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths

In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths Any codepath that zaps page table entries must invoke MMU notifiers to ensure that secondary MMUs like KVM don't keep accessing pages which aren't mapped anymore...

CVE-2022-48991 mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths

In the Linux kernel, the following vulnerability has been resolved: mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths Any codepath that zaps page table entries must invoke MMU notifiers to ensure that secondary MMUs like KVM don't keep accessing pages which aren't mapped anymore...

PT-2023-33228 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.15.83 Description: The issue is related to the invocation of MMU notifiers in shmem/file collapse paths in the Linux Kernel. The actual impact and attack plausibility have not yet been proven. Recommendations...