Integer overflow in the ffs_mountfs function in Mac OS X 10.4.8 and FreeBSD 6.1 allows local users to cause a denial of service (panic) and possibly gain privileges via a crafted DMG image that causes "allocation of a negative size buffer" leading to a heap-based buffer overflow, a related issue to CVE-2006-5679. NOTE: a third party states that this issue does not cross privilege boundaries in FreeBSD because only root may mount a filesystem.
https://exchange.xforce.ibmcloud.com/vulnerabilities/31409
http://www.vupen.com/english/advisories/2007/0930
http://www.vupen.com/english/advisories/2007/0141
http://www.us-cert.gov/cas/techalerts/TA07-072A.html
http://www.securitytracker.com/id?1017751
http://www.securityfocus.com/bid/21993
http://secunia.com/advisories/24479
http://secunia.com/advisories/23703
http://lists.freebsd.org/pipermail/freebsd-security/2007-January/004218.html
http://lists.apple.com/archives/security-announce/2007/Mar/msg00002.html
http://docs.info.apple.com/article.html?artnum=305214
http://applefun.blogspot.com/2007/01/moab-10-01-2007-apple-dmg-ufs.html