https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Mon, 05 Oct 2026 10:45:03 +0000 https://vulnerability.circl.lu/vuln/cve-2021-47461 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>userfaultfd: fix a race between writeprotect and exit_mmap()</p> <p>A race is possible when a process exits, its VMAs are removed by exit_mmap() and at the same time userfaultfd_writeprotect() is called.</p> <p>The race was detected by KASAN on a development kernel, but it appears to be possible on vanilla kernels as well.</p> <p>Use mmget_not_zero() to prevent the race as done in other userfaultfd operations.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>userfaultfd: fix a race between writeprotect and exit_mmap()</p> <p>A race is possible when a process exits, its VMAs are removed by exit_mmap() and at the same time userfaultfd_writeprotect() is called.</p> <p>The race was detected by KASAN on a development kernel, but it appears to be possible on vanilla kernels as well.</p> <p>Use mmget_not_zero() to prevent the race as done in other userfaultfd operations.</p> https://vulnerability.circl.lu/vuln/cve-2021-47461