The CVE description of this issue is "The HFS and HFS+ (hfsplus) modules in Linux 2.6 allows attackers to cause a denial of service (oops) by using hfsplus to mount a filesystem that is not hfsplus." However this is actually two issues as can be seen from the commit: http://www.kernel.org/git/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=945b092011c6af71a0107be96e119c8c08776f3f The first is that in certain error cases for hfs and hfsplus there is a failure to free kernel structure. The second is a hfsplus flaw that could lead to a crash.
Created attachment 120823 [details] Proposed patch
Created attachment 120827 [details] Proposed patch
There turns out be a memory leak in the hfsplus failure path as well, so I fixed that too. The changes for all of these fixes mimic those from upstream.
commited in -22.23
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2006-0101.html