[PATCH] security/selinux: fix potential memleak in error branch

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This patch try to fix potential memleak in error branch.

Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>
---
 security/selinux/hooks.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 62d30c0a30c2..10700720bb74 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -983,6 +983,7 @@ static int selinux_sb_clone_mnt_opts(const struct super_block *oldsb,
 static int selinux_add_opt(int token, const char *s, void **mnt_opts)
 {
 	struct selinux_mnt_opts *opts = *mnt_opts;
+	bool is_alloc_opts = false;
 
 	if (token == Opt_seclabel)	/* eaten and completely ignored */
 		return 0;
@@ -992,9 +993,13 @@ static int selinux_add_opt(int token, const char *s, void **mnt_opts)
 		if (!opts)
 			return -ENOMEM;
 		*mnt_opts = opts;
+		is_alloc_opts = true;
 	}
-	if (!s)
+	if (!s) {
+		if (is_alloc_opts)
+			kfree(opts);
 		return -ENOMEM;
+	}
 	switch (token) {
 	case Opt_context:
 		if (opts->context || opts->defcontext)
@@ -1020,6 +1025,8 @@ static int selinux_add_opt(int token, const char *s, void **mnt_opts)
 	return 0;
 Einval:
 	pr_warn(SEL_MOUNT_FAIL_MSG);
+	if (is_alloc_opts)
+		kfree(opts);
 	return -EINVAL;
 }
 
-- 
2.33.1




[Index of Archives]     [Selinux Refpolicy]     [Linux SGX]     [Fedora Users]     [Fedora Desktop]     [Yosemite Photos]     [Yosemite Camping]     [Yosemite Campsites]     [KDE Users]     [Gnome Users]

  Powered by Linux