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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/459860529c109c5ce08b81c0776ca1200eaaeb4a
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/637ef4961470e04455102b34ac484a34d8eca0a4
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/77fd6f50f633a52c2db061e7d71d8cb486b0265e
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/91f289728ec706b7ff1ca0ee845dd73ff2253488
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9b9e8bb81c41fd27e7b57a1c936fde140548535f
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9e57e2863872e82e7c7237bc32299f67ebebc543
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e6d93108e0a27d7e6f95c7e45017d14ba2900d32
416baaa9-dc9f-4396-8d5f-8c081fb06d67