shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-01 00:36:40 +09:00
Code Issues Packages Projects Releases Wiki Activity

xfs: fix acl count validation in xfs_acl_from_disk()

Browse Source 
commit 093019cf1b upstream.

Commit fa8b18ed didn't prevent the integer overflow and possible
memory corruption.  "count" can go negative and bypass the check.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Xi Wang
2011-12-12 21:55:52 +00:00
committed by Greg Kroah-Hartman
parent f9fd8d6232
commit da777f649c
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/xfs/xfs_acl.c
View File

@@ -39,7 +39,7 @@ xfs_acl_from_disk(struct xfs_acl *aclp)
struct posix_acl_entry *acl_e;
struct posix_acl *acl;
struct xfs_acl_entry *ace;
int count, i;
unsigned int count, i;
count = be32_to_cpu(aclp->acl_cnt);
if (count > XFS_ACL_MAX_ENTRIES)