CVE-2024-41055: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.

Affected products

• Linux Linux Kernel: from 5.10.219, before 5.10.222 (fixed in 5.10.222); from 5.15.149, before 5.15.163 (fixed in 5.15.163); from 6.1.76, before 6.1.100 (fixed in 6.1.100); from 6.6.15, before 6.6.41 (fixed in 6.6.41); from 6.8, before 6.9.10 (fixed in 6.9.10)

Published 2024-07-29. Last modified 2026-06-17.