https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=298085
--- Comment #6 from [email protected] --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=8646d65b45339642d4aab1de35a2bc79fc45f09e commit 8646d65b45339642d4aab1de35a2bc79fc45f09e Author: Glen Barber <[email protected]> AuthorDate: 2026-09-03 07:51:28 +0000 Commit: Dag-Erling Smørgrav <[email protected]> CommitDate: 2026-09-03 07:58:54 +0000 hastd: Fix crash on empty message A HAST message can be empty, in which case ebuf_add_tail() does nothing and ebuf_data() returns NULL because the size of the ebuf is zero, but hast_proto_recv_hdr() asserts that the return value is not NULL, resulting in an immediate crash if hastctl or hastd receive an empty message. This is trivially reproducable by running `hastctl status` or `hastctl role init` (as the rc script does prior to stopping hastd). To avoid this, don't try to grow the ebuf or receive additional data if the header size is zero. PR: 298085 MFC after: 3 days Reviewed by: kevans, gjb Differential Revision: https://reviews.freebsd.org/D59306 sbin/hastd/hast_proto.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) -- You are receiving this mail because: You are the assignee for the bug.
