[Bug 1565567] Re: segv in sudo_getgrgid

Marc Deslauriers marc.deslauriers at canonical.com
Wed May 4 12:01:24 UTC 2016


** Also affects: sudo (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: sudo (Ubuntu Xenial)
       Status: New => Confirmed

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Title:
  segv in sudo_getgrgid

Status in sudo package in Ubuntu:
  Confirmed
Status in sudo source package in Xenial:
  Confirmed

Bug description:
  If the user is in a group with no name (because libnss-db got removed
  and the group was defined there, for example...) then:

  the call to sudo_debug_printf in sudo_getgrgid
  (plugins/sudoers/pwutil.c, line 462) causes a SEGV when trying to get
  item->d.gr->gr_name (since item->d.gr is NULL).

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