Backport #8829: Segfault in Zlib::Inflate

• Status: Closed
• Assignee: nagachika (Tomoyuki Chikanaga)

[mml (McClain Looney)]

Repro:

ruby -rzlib -e 'Zlib::Inflate.inflate([0x08,0x3C,0x0,0x0,0x0,0x0].pack("c*"))'

tested on p247, osx (10.8), linux 2.6, (linux: zlib 1.2.3)

[drbrain (Eric Hodel)]

• Status changed from Open to Assigned
• Assignee set to drbrain (Eric Hodel)
• Backport changed from 1.9.3: UNKNOWN, 2.0.0: UNKNOWN to 1.9.3: DONTNEED, 2.0.0: REQUIRED

Seems to be my bug.

[drbrain (Eric Hodel)]

• Status changed from Assigned to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r42720.
McClain, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• ext/zlib/zlib.c (zstream_run): Fix handling of deflate streams that
  need a dictionary but are being decompressed by Zlib::Inflate.inflate
  (which has no option to set a dictionary). Now Zlib::NeedDict is
  raised instead of crashing. [ruby-trunk - Bug #8829]
• test/zlib/test_zlib.rb (TestZlibInflate): Test for the above.

[nagachika (Tomoyuki Chikanaga)]

• Tracker changed from Bug to Backport
• Project changed from Ruby to 15
• Category deleted (core)
• Status changed from Closed to Assigned
• Assignee changed from drbrain (Eric Hodel) to nagachika (Tomoyuki Chikanaga)

[nagachika (Tomoyuki Chikanaga)]

• Status changed from Assigned to Closed

This issue was solved with changeset r42727.
McClain, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

merge revision(s) 42720: [Backport #8829]

* ext/zlib/zlib.c (zstream_run):  Fix handling of deflate streams that
  need a dictionary but are being decompressed by Zlib::Inflate.inflate
  (which has no option to set a dictionary).  Now Zlib::NeedDict is
  raised instead of crashing.  [ruby-trunk - Bug #8829]

* test/zlib/test_zlib.rb (TestZlibInflate):  Test for the above.