CVE-2026-64180 - mm/memory_hotplug: fix memory block reference leak on remove

CVE-2026-64180 - mm/memory_hotplug: fix memory block reference leak on remove

https://cvefeed.io/rssfeed/latest.atom / Sun, 07/19/2026 - 19:06
CVE ID :CVE-2026-64180
Published : July 19, 2026, 4:18 p.m. | 31 minutes ago
Description :In the Linux kernel, the following vulnerability has been resolved: mm/memory_hotplug: fix memory block reference leak on remove Patch series "mm: Fix memory block leaks and locking", v2. This series fixes two memory block device reference leaks and one locking issue around the per-memory_block hwpoison counter. This patch (of 2): remove_memory_blocks_and_altmaps() looks up each memory block with find_memory_block(), which acquires a reference to the memory block device. That reference is never dropped on this path, resulting in a leaked device reference when removing memory blocks and their altmaps. Drop the reference after retrieving mem->altmap and clearing mem->altmap, before removing the memory block device.
Severity: 0.0 | NA
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