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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-31 14:16:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-31 14:16:13 -0800
commit2cfa1cd3da14814a1e9ec6a4fce8612637d3ee3d (patch)
treea3d5f2dcb3fd5db19e48fe9c7e0b7c96db8c1f72 /security/selinux/ss
parent3dbc4f548519f9882676843b4fcdb4e61668baf8 (diff)
parent4b14752ec4e0d87126e636384cf37c8dd9df157c (diff)
Merge tag 'selinux-pr-20180130' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore: "A small pull request this time, just three patches, and one of these is just a comment update (swap the FSF physical address for a URL). The other two patches are small bug fixes found by szybot/syzkaller; they individual patch descriptions should tell you all you ever wanted to know" * tag 'selinux-pr-20180130' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: skip bounded transition processing if the policy isn't loaded selinux: ensure the context is NUL terminated in security_context_to_sid_core() security: replace FSF address with web source in license notices
Diffstat (limited to 'security/selinux/ss')
-rw-r--r--security/selinux/ss/services.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 33cfe5d3d6cb..8900ea5cbabf 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -867,6 +867,9 @@ int security_bounded_transition(u32 old_sid, u32 new_sid)
int index;
int rc;
+ if (!ss_initialized)
+ return 0;
+
read_lock(&policy_rwlock);
rc = -EINVAL;
@@ -1413,27 +1416,25 @@ static int security_context_to_sid_core(const char *scontext, u32 scontext_len,
if (!scontext_len)
return -EINVAL;
+ /* Copy the string to allow changes and ensure a NUL terminator */
+ scontext2 = kmemdup_nul(scontext, scontext_len, gfp_flags);
+ if (!scontext2)
+ return -ENOMEM;
+
if (!ss_initialized) {
int i;
for (i = 1; i < SECINITSID_NUM; i++) {
- if (!strcmp(initial_sid_to_string[i], scontext)) {
+ if (!strcmp(initial_sid_to_string[i], scontext2)) {
*sid = i;
- return 0;
+ goto out;
}
}
*sid = SECINITSID_KERNEL;
- return 0;
+ goto out;
}
*sid = SECSID_NULL;
- /* Copy the string so that we can modify the copy as we parse it. */
- scontext2 = kmalloc(scontext_len + 1, gfp_flags);
- if (!scontext2)
- return -ENOMEM;
- memcpy(scontext2, scontext, scontext_len);
- scontext2[scontext_len] = 0;
-
if (force) {
/* Save another copy for storing in uninterpreted form */
rc = -ENOMEM;