VULNERABILITY

VMware Photon OS: CVE-2021-47461

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VMware Photon OS: CVE-2021-47461

Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
05/22/2024
Created
01/21/2025
Added
01/20/2025
Modified
02/18/2025

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.

Solution(s)

  • vmware-photon_os_update_tdnf

References

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