[Bug 477607] New: mkfontscale produces syscalls with EINVAL

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Mon Dec 22 12:02:53 UTC 2008

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Summary: mkfontscale produces syscalls with EINVAL


           Summary: mkfontscale produces syscalls with EINVAL
           Product: Fedora
           Version: 9
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: medium
          Priority: low
         Component: freetype
        AssignedTo: besfahbo at redhat.com
        ReportedBy: sgrubb at redhat.com
         QAContact: extras-qa at fedoraproject.org
                CC: besfahbo at redhat.com, kevin at tigcc.ticalc.org,
                    fedora-fonts-bugs-list at redhat.com
    Classification: Fedora

Created an attachment (id=327635)
 --> (https://bugzilla.redhat.com/attachment.cgi?id=327635)
patch fixing problems described herein

Description of problem:
The mkfontscale program uses the freetype library. Our IDS work shows that the
freetype library causes mmap syscalls with EINVAL return codes. This is because
its not checking the length of the file before calling mmap. If the file is
opened readonly and the length is 0, the kernel does not like it.

How reproducible:

Steps to Reproduce:
1. add to audit rules: -a always,exit -S mmap -F exit=-ENIVAL -k einval
2. reboot system
3. ausearch --start recent -k einval

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