CVE-2021-47461
Published May 22, 2024
Last updated 6 months ago
Overview
- Description
- In the Linux kernel, the following vulnerability has been resolved: userfaultfd: fix a race between writeprotect and exit_mmap() A race is possible when a process exits, its VMAs are removed by exit_mmap() and at the same time userfaultfd_writeprotect() is called. The race was detected by KASAN on a development kernel, but it appears to be possible on vanilla kernels as well. Use mmget_not_zero() to prevent the race as done in other userfaultfd operations.
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Awaiting Analysis
Social media
- Hype score
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