Public bug reported:
[Impact]
When kill is called with a negative argument, incorrect parsing can lead it to
call sys_kill(-1), thus sending a signal to all permitted processes on the
system. A couple of users have hit this while deploying Hadoop, which seems to
tickle this - basically killing everything on the system.
[Test Case]
Though I don't know what Hadoop is calling, here's a couple of ways to trigger
this:
One possibility is if kill were called w/ a numeric signal that
happened to start with a '1' and while omitting the required <pid>
argument:
kill -12
Another would be to specify a numeric signal (that again happened to
start with a 1) multiple times:
kill -13 -13 12345
[Regression Risk]
This is a backport from upstream that is already available in 16.10, with no
known regressions.
** Affects: procps (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: procps (Ubuntu Xenial)
Importance: High
Assignee: dann frazier (dannf)
Status: In Progress
** Also affects: procps (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: procps (Ubuntu)
Status: New => Fix Released
** Changed in: procps (Ubuntu Xenial)
Status: New => In Progress
** Changed in: procps (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: procps (Ubuntu Xenial)
Assignee: (unassigned) => dann frazier (dannf)
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https://bugs.launchpad.net/bugs/1637026
Title:
kill incorrectly parses negative PIDs
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