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) -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1637026 Title: kill incorrectly parses negative PIDs Status in procps package in Ubuntu: Fix Released Status in procps source package in Xenial: In Progress Bug description: [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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1637026/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp