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SELinux: fix memory leakage in /security/selinux/hooks.c 

Fix memory leakage in /security/selinux/hooks.c

The buffer always needs to be freed here; we either error
out or allocate more memory.

Reported-by: iceberg <strakh@ispras.ru>
Signed-off-by: James Morris <jmorris@namei.org>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
This commit is contained in:
James Morris 2009-08-10 22:00:13 +10:00
parent 85dfd81dc5
commit 314dabb83a
1 changed files with 2 additions and 1 deletions
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3
security/selinux/hooks.c
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@ -1285,6 +1285,8 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
rc = inode->i_op->getxattr(dentry, XATTR_NAME_SELINUX,
context, len);
if (rc == -ERANGE) {
kfree(context);
/* Need a larger buffer. Query for the right size. */
rc = inode->i_op->getxattr(dentry, XATTR_NAME_SELINUX,
NULL, 0);
@ -1292,7 +1294,6 @@ static int inode_doinit_with_dentry(struct inode *inode, struct dentry *opt_dent
dput(dentry);
goto out_unlock;
}
kfree(context);
len = rc;
context = kmalloc(len+1, GFP_NOFS);
if (!context) {