In the Linux kernel, the following vulnerability has been resolved:
selinux: check connect-related permissions on TCP Fast Open
Similar to Landlock, SELinux was not updated when TCP Fast Open
support was introduced to ensure connect-related permissions are
checked when using TCP Fast Open. Update its socket_sendmsg() hook to
call selinux_socket_connect() when MSG_FASTOPEN is passed.
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
None
No disruption
CVSS Vector v3.1
References 6
https://git.kernel.org/stable/c/11406d0d7e11b4e525bb2ace2c70107031d058da
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/44c74d27d1b9aaa99fa8a83640c1223575262b80
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/646ebbc5f2ff9147d084e1213143f091026a611c
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e507633bf76bccf1a6af27771fb0d6e2862b7eac
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fc633a598206d4f23af782db7c0b5f3a82751d2c
416baaa9-dc9f-4396-8d5f-8c081fb06d67