PT-2026-61497 · Linux · Linux Kernel

CVE-2026-64180 · Published 2026-07-19 · Updated 2026-07-19

Positive Technologies (AI Summary)

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

Description An issue exists in the memory hotplug component where the remove memory blocks and altmaps() function fails to release a reference to the memory block device. This occurs because find memory block() acquires a reference that is not subsequently dropped after the mem->altmap is retrieved and cleared, leading to a memory block device reference leak during the removal of memory blocks and their altmaps.

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

Related Identifiers

CVE-2026-64180

Affected Products

Linux Kernel

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-64180 · Security Note
• https://twitter.com/CVEnew/status/2078951950897287496 · Twitter Post
• https://git.kernel.org/stable/c/df64c0d21c3f85f844b2f656333e43d97e6ffa74 · Note
• https://twitter.com/infoflowcloud/status/2078953276439978305 · Twitter Post
• https://git.kernel.org/stable/c/09ce923071e7852ece60d7368e05249bf32c7967 · Note
• https://git.kernel.org/stable/c/93866f55f7e292fe3d47d36c9efe5ee10213a06b · Note
• https://git.kernel.org/stable/c/b8ab30c79fc00147125b9c39f928561d9dd13d06 · Note