The MITRE CVE dictionary describes this issue as:
Buffer overflow in the VFAT filesystem implementation in the Linux kernel before 3.3 allows local users to gain privileges or cause a denial of service (system crash) via a VFAT write operation on a filesystem with the utf8 mount option, which is not properly handled during UTF-8 to UTF-16 conversion.
- Red Hat Enterprise Linux (RHEL)
- Red Hat MRG Realtime 2
Please note, this issue did not affect RHEL 5.
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