Date: Thu, 08 Aug 2024 20:07:39 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 280418] calendar -a trashes parent's pgrp login setting Message-ID: <bug-280418-227-KpU8RWi21z@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-280418-227@https.bugs.freebsd.org/bugzilla/> References: <bug-280418-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D280418 --- Comment #8 from commit-hook@FreeBSD.org --- A commit in branch stable/14 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D33708452aaabca205d81eceb83e0813e5= 882815c commit 33708452aaabca205d81eceb83e0813e5882815c Author: Kyle Evans <kevans@FreeBSD.org> AuthorDate: 2024-08-05 18:43:56 +0000 Commit: Kyle Evans <kevans@FreeBSD.org> CommitDate: 2024-08-08 19:59:21 +0000 calendar: don't setlogin(2) in the -a user handlers As of e67975d331 ("Fix 'calendar -a' in several ways."), `calendar -a` will now fork off a new process for each user and do all of its own processing in the user's own context. As a side-effect, calendar(1) started calling setlogin(2) in each of the forked processes and inadvertently hijacked the login name for the session it was running under, which was typically not a fresh session but rather that of whatever cron/periodic run spawned it. Thus, daily and security e-mails started coming from completely arbitrary user. We could create a new session, but it appears that nothing calendar(1) does really needs the login name to be clobbered; opt to just avoid the setlogin(2) call entirely rather than incur the overhead of a new session for each process. PR: 280418 Reviewed by: des, olce Fixes: e67975d331 ("Fix 'calendar -a' in several ways.") (cherry picked from commit 6cb8b61efe8899ee9194563108d0ae90c1eb89e3) usr.bin/calendar/calendar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --=20 You are receiving this mail because: You are on the CC list for the bug.=
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