[Bug 1025670] [NEW] Segfault (.bss overflow) in PCRE

[Tim Starling]

Public bug reported:

A bug in PCRE was fixed upstream. The issue is a segfault with a pattern
like /\x{300000}/ui, e.g.

pcregrep -ui '\x{300000}' < /dev/null

There was no bounds checking on access to some UCD character tables, and
insufficient bounds checking in \x character construction. The fix was
included in a commit that did a lot of other things:

http://vcs.pcre.org/viewvc?view=revision&revision=774

but I have split out the relevant single-line fix for your convenience.
Patch attached.

** Affects: pcre3 (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1025670

Title:
  Segfault (.bss overflow) in PCRE

Status in “pcre3” package in Ubuntu:
  New

Bug description:
  A bug in PCRE was fixed upstream. The issue is a segfault with a
  pattern like /\x{300000}/ui, e.g.

  pcregrep -ui '\x{300000}' < /dev/null

  There was no bounds checking on access to some UCD character tables,
  and insufficient bounds checking in \x character construction. The fix
  was included in a commit that did a lot of other things:

  http://vcs.pcre.org/viewvc?view=revision&revision=774

  but I have split out the relevant single-line fix for your
  convenience. Patch attached.

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