configfs: fix lockless traversals of ->s_children
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 94% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
configfs: fix lockless traversals of ->s_children
Having the parent directory locked protects entries from removal
by another thread, but it does *not* protect cursors from being
moved around by lseek() - or freed, for that matter.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/459860529c109c5ce08b81c0776ca1200eaaeb4ahttps://git.kernel.org/stable/c/637ef4961470e04455102b34ac484a34d8eca0a4https://git.kernel.org/stable/c/77fd6f50f633a52c2db061e7d71d8cb486b0265ehttps://git.kernel.org/stable/c/91f289728ec706b7ff1ca0ee845dd73ff2253488https://git.kernel.org/stable/c/9b9e8bb81c41fd27e7b57a1c936fde140548535fhttps://git.kernel.org/stable/c/9e57e2863872e82e7c7237bc32299f67ebebc543https://git.kernel.org/stable/c/b166ab78dc3f48e83d2c80bdfde4159b31fdc5fbhttps://git.kernel.org/stable/c/e6d93108e0a27d7e6f95c7e45017d14ba2900d32