Tracker / CVE-2024-41055
CVE-2024-41055
Medium 5.5
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 and versions
| linux | linux_kernel · 5.10.219 → 5.10.222 |
|---|---|
| linux | linux_kernel · 5.15.149 → 5.15.163 |
| linux | linux_kernel · 6.1.76 → 6.1.100 |
| linux | linux_kernel · 6.6.15 → 6.6.41 |
| linux | linux_kernel · 6.8 → 6.9.10 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.