CVE-2026-64180: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 6b8f0798b85aa529011570369db985a788f3003f преди b8ab30c79fc00147125b9c39f928561d9dd13d06; 6b8f0798b85aa529011570369db985a788f3003f преди 09ce923071e7852ece60d7368e05249bf32c7967; 6b8f0798b85aa529011570369db985a788f3003f преди df64c0d21c3f85f844b2f656333e43d97e6ffa74; 6b8f0798b85aa529011570369db985a788f3003f преди 93866f55f7e292fe3d47d36c9efe5ee10213a06b
• Linux Linux: 6.8; преди 6.8; 6.12.92 до 6.12.*; 6.18.34 до 6.18.*; 7.0.11 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64180
• https://nvd.nist.gov/vuln/detail/CVE-2026-64180
• https://git.kernel.org/stable/c/b8ab30c79fc00147125b9c39f928561d9dd13d06
• https://git.kernel.org/stable/c/09ce923071e7852ece60d7368e05249bf32c7967
• https://git.kernel.org/stable/c/df64c0d21c3f85f844b2f656333e43d97e6ffa74
• https://git.kernel.org/stable/c/93866f55f7e292fe3d47d36c9efe5ee10213a06b