There exists a vulnerability within a function of Linux eCryptfs (Enterprise Cryptographic Filesystem), which when properly exploited can lead to compromise of the vulnerable system. This vulnerability was confirmed in the Linux kernel version 2.6.30.3. Linux kernel versions 2.6.19 and later have eCryptfs support and may be also affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/79732/RISE-2009003.txt
Source: https://packetstormsecurity.com/files/79732/Linux-eCryptfs-parse_tag_3_packet-Encrypted-Key-Overflow.html