https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 04:54:26 +0000 https://vulnerability.circl.lu/vuln/cve-2026-89568 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>kho: fix size calculation in kho_preserved_memory_reserve()</p> <p>kho_preserved_memory_reserve() calculates the size of a preservation by doing 1 &lt;&lt; (order + PAGE_SHIFT). Since the &#39;1&#39; is a 32-bit integer, it can only be shifted by 31. That is, it will only work for preservations up to 2 GiB. Larger preservations will trigger undefined behaviour.</p> <p>While preservations larger than 2 GiB can&#39;t be obtained via folios currently, they can be obtained via kho_preserve_pages().</p> <p>For example, memblock reserve_mem uses kho_preserve_pages(). Reservations larger than 2 GiB are valid and will trigger this bug if properly aligned.</p> <p>Fix it by using 1UL for shifting.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>kho: fix size calculation in kho_preserved_memory_reserve()</p> <p>kho_preserved_memory_reserve() calculates the size of a preservation by doing 1 &lt;&lt; (order + PAGE_SHIFT). Since the &#39;1&#39; is a 32-bit integer, it can only be shifted by 31. That is, it will only work for preservations up to 2 GiB. Larger preservations will trigger undefined behaviour.</p> <p>While preservations larger than 2 GiB can&#39;t be obtained via folios currently, they can be obtained via kho_preserve_pages().</p> <p>For example, memblock reserve_mem uses kho_preserve_pages(). Reservations larger than 2 GiB are valid and will trigger this bug if properly aligned.</p> <p>Fix it by using 1UL for shifting.</p> https://vulnerability.circl.lu/vuln/cve-2026-89568