Description: net: Only allow init netns to set default tcp cong to a restricted algo
References:
Notes:
 carnil> Introduced in 6670e1524477 ("tcp: Namespace-ify
 carnil> sysctl_tcp_default_congestion_control"). Vulnerable versions: 4.15-rc1.
Bugs:
upstream: released (5.13-rc1) [8d432592f30fcc34ef5a10aac4887b4897884493]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: released (5.10.37) [6c1ea8bee75df8fe2184a50fcd0f70bf82986f42]
4.19-upstream-stable: released (4.19.191) [992de06308d9a9584d59b96d294ac676f924e437]
sid: released (5.10.38-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: N/A "Fixed before branching point"
4.19-buster-security: released (4.19.194-1)