[Bug 1890535] [NEW] Parsing of /etc/gshadow can return bad pointers causing segfaults in applications

[Malte Schmidt]

Public bug reported:

This bug is already solved upstream
(https://sourceware.org/bugzilla/show_bug.cgi?id=20338) in 2.32 and has
to be backported.

It indirectly causes systemd-sysusers on 20.04/focal to fail
(https://github.com/systemd/systemd/issues/6512).

** Affects: glibc
     Importance: Unknown
         Status: Unknown

** Affects: glibc (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: glibc gshadow systemd-sysusers

** Bug watch added: Sourceware.org Bugzilla #20338
   https://sourceware.org/bugzilla/show_bug.cgi?id=20338

** Also affects: glibc via
   https://sourceware.org/bugzilla/show_bug.cgi?id=20338
   Importance: Unknown
       Status: Unknown

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to glibc in Ubuntu.
https://bugs.launchpad.net/bugs/1890535

Title:
  Parsing of /etc/gshadow can return bad pointers causing segfaults in
  applications

Status in GLibC:
  Unknown
Status in glibc package in Ubuntu:
  New

Bug description:
  This bug is already solved upstream
  (https://sourceware.org/bugzilla/show_bug.cgi?id=20338) in 2.32 and
  has to be backported.

  It indirectly causes systemd-sysusers on 20.04/focal to fail
  (https://github.com/systemd/systemd/issues/6512).

To manage notifications about this bug go to:
https://bugs.launchpad.net/glibc/+bug/1890535/+subscriptions