File _patchinfo of Package patchinfo.501

<patchinfo incident="501">
  <issue id="921978" tracker="bnc">VUL-0: CVE-2015-1802: libXFont: BDF file parsing issues in libXfont</issue>
  <issue id="CVE-2015-1804" tracker="cve" />
  <issue id="CVE-2015-1802" tracker="cve" />
  <issue id="CVE-2015-1803" tracker="cve" />
  <category>security</category>
  <rating>important</rating>
  <packager>michalsrb</packager>
  <description>
LibXFont was updated to fix security problems.

Following security issues were fixed:
- CVE-2015-1802: The bdf parser reads a count for the number of properties
  defined in a font from the font file, and allocates arrays with entries for each
  property based on that count. It never checked to see if that count
  was negative, or large enough to overflow when multiplied by the size
  of the structures being allocated, and could thus allocate the wrong
  buffer size, leading to out of bounds writes.

- CVE-2015-1803: If the bdf parser failed to parse the data for the bitmap for any
  character, it would proceed with an invalid pointer to the bitmap
  data and later crash when trying to read the bitmap from that pointer.

- CVE-2015-1804: The bdf parser read metrics values as 32-bit integers, but stored
  them into 16-bit integers. Overflows could occur in various operations
  leading to out-of-bounds memory access. 
</description>
  <summary>Security update for libXfont</summary>
  <relogin_needed/>
</patchinfo>