https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 09 Oct 2026 23:39:47 +0000 https://vulnerability.circl.lu/vuln/cve-2026-98223 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>mm: filemap: retain mapped dropbehind folios</p> <p>Fault-around can map ready dropbehind folios without going through the normal page-cache lookup that clears dropbehind. A mapping represents a competing cached user, so retain the folio instead of forcibly unmapping it when writeback completes.</p> <p>For a mapped folio, folio_unmap_invalidate() can call unmap_mapping_folio(), which takes i_mmap_rwsem and may sleep. Retaining mapped folios avoids this path when folio_end_dropbehind() runs in non-preemptible task context.</p> <p>Tal was able to trigger a sleeping-in-atomic warning due to this [1].</p> <p>Unmapped dropbehind folios continue through the existing invalidation path.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>mm: filemap: retain mapped dropbehind folios</p> <p>Fault-around can map ready dropbehind folios without going through the normal page-cache lookup that clears dropbehind. A mapping represents a competing cached user, so retain the folio instead of forcibly unmapping it when writeback completes.</p> <p>For a mapped folio, folio_unmap_invalidate() can call unmap_mapping_folio(), which takes i_mmap_rwsem and may sleep. Retaining mapped folios avoids this path when folio_end_dropbehind() runs in non-preemptible task context.</p> <p>Tal was able to trigger a sleeping-in-atomic warning due to this [1].</p> <p>Unmapped dropbehind folios continue through the existing invalidation path.</p> https://vulnerability.circl.lu/vuln/cve-2026-98223