[Bug 207362] Crafted gzip archive causes tar(1) to exhaust all your memory

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207362

--- Comment #6 from commit-hook at freebsd.org ---
A commit references this bug:

Author: delphij
Date: Tue Feb 23 08:12:39 UTC 2016
New revision: 295915
URL: https://svnweb.freebsd.org/changeset/base/295915

Log:
  Instant-MFC r295914: MFV r295913:

  Partially apply upstream changeset 6e06b1c8 (kientzle).

  Limit filter recursion level to 25 (instead of infinite).  This fixes a
  potential crash issue discovered by Alexander Cherepanov.

  PR:           207362
  Reported by:  Robert Clausecker
  Obtained from:        libarchive github project
  Approved by:  so

Changes:
_U  stable/9/contrib/libarchive/
_U  stable/9/contrib/libarchive/libarchive/
  stable/9/contrib/libarchive/libarchive/archive_read.c

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