https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 13:31:18 +0000 https://vulnerability.circl.lu/vuln/cve-2024-40948 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>mm/page_table_check: fix crash on ZONE_DEVICE</p> <p>Not all pages may apply to pgtable check. One example is ZONE_DEVICE pages: they map PFNs directly, and they don&#39;t allocate page_ext at all even if there&#39;s struct page around. One may reference devm_memremap_pages().</p> <p>When both ZONE_DEVICE and page-table-check enabled, then try to map some dax memories, one can trigger kernel bug constantly now when the kernel was trying to inject some pfn maps on the dax device:</p> <p>kernel BUG at mm/page_table_check.c:55!</p> <p>While it&#39;s pretty legal to use set_pxx_at() for ZONE_DEVICE pages for page fault resolutions, skip all the checks if page_ext doesn&#39;t even exist in pgtable checker, which applies to ZONE_DEVICE but maybe more.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>mm/page_table_check: fix crash on ZONE_DEVICE</p> <p>Not all pages may apply to pgtable check. One example is ZONE_DEVICE pages: they map PFNs directly, and they don&#39;t allocate page_ext at all even if there&#39;s struct page around. One may reference devm_memremap_pages().</p> <p>When both ZONE_DEVICE and page-table-check enabled, then try to map some dax memories, one can trigger kernel bug constantly now when the kernel was trying to inject some pfn maps on the dax device:</p> <p>kernel BUG at mm/page_table_check.c:55!</p> <p>While it&#39;s pretty legal to use set_pxx_at() for ZONE_DEVICE pages for page fault resolutions, skip all the checks if page_ext doesn&#39;t even exist in pgtable checker, which applies to ZONE_DEVICE but maybe more.</p> https://vulnerability.circl.lu/vuln/cve-2024-40948