[Bug libc/34526] New: rpmatch is not thread-safe

https://sourceware.org/bugzilla/show_bug.cgi?id=34526

            Bug ID: 34526
           Summary: rpmatch is not thread-safe
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: fweimer at redhat dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---
             Flags: security-

Created attachment 16940
  --> https://sourceware.org/bugzilla/attachment.cgi?id=16940&action=edit
RHEL-216351.html

There's a compiled regexp cache in rpmatch. It's global, but not protected by a
mutex, so there is a data race.

I'm required to mention: Found by AISLE in partnership with Red Hat

This isn't a security vulnerability, though.

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