You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cross-Session MessagingArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What
Before connecting to another session's socket, Claude now verifies the peer's process id and that the socket is owned by an expected user id, rather than trusting the path alone.
Details
Messaging state gained fields for the accepted owner user ids, an in-flight start marker, and the last start-failure detail.
Evidence
peerDirOwnerUids
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
