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[Bug 1565567] Re: segv in sudo_getgrgid

 

Thanks for the detailed analysis.

I have uploaded a package for testing with the minimal fix in the
following PPA:

https://launchpad.net/~mdeslaur/+archive/ubuntu/testing

Once it's finished building, could someone please check if the package
resolves their issue? If so, I'll upload it to proposed as an SRU.

Thanks!


** Changed in: sudo (Ubuntu)
     Assignee: (unassigned) => Marc Deslauriers (mdeslaur)

** Changed in: sudo (Ubuntu Xenial)
     Assignee: (unassigned) => Marc Deslauriers (mdeslaur)

** Bug watch added: bugzilla.sudo.ws/ #743
   http://bugzilla.sudo.ws/show_bug.cgi?id=743

** Also affects: sudo via
   http://bugzilla.sudo.ws/show_bug.cgi?id=743
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/1565567

Title:
  segv in sudo_getgrgid

Status in sudo:
  Unknown
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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