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authorLinus Torvalds <torvalds@linux-foundation.org>2018-05-30 16:35:07 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2018-05-30 16:35:07 -0500
commit943cf9f3ca16133dbd00f9a4cbfea46512fcb0e8 (patch)
tree0f41a7d08f725701203530978b6180d6cb340ea7
parentc462f16b1a319991c59747e65837924a5ff17755 (diff)
parentefe3de79e0b52ca281ef6691480c8c68c82a4657 (diff)
downloadlinux-943cf9f3ca16133dbd00f9a4cbfea46512fcb0e8.tar.bz2
Merge tag 'selinux-pr-20180530' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull SELinux fix from Paul Moore: "One more small fix for SELinux: a small string length fix found by KASAN. I dislike sending patches this late in the release cycle, but this patch fixes a legitimate problem, is very small, limited in scope, and well understood. There are two threads with more information on the problem, the latest is linked below: https://marc.info/?t=152723737400001&r=1&w=2 Stephen points out in the thread linked above: 'Such a setxattr() call can only be performed by a process with CAP_MAC_ADMIN that is also allowed mac_admin permission in SELinux policy. Consequently, this is never possible on Android (no process is allowed mac_admin permission, always enforcing) and is only possible in Fedora/RHEL for a few domains (if enforcing)'" * tag 'selinux-pr-20180530' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: KASAN: slab-out-of-bounds in xattr_getsecurity
-rw-r--r--security/selinux/ss/services.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 8057e19dc15f..3ce225e3f142 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -1494,7 +1494,7 @@ static int security_context_to_sid_core(struct selinux_state *state,
scontext_len, &context, def_sid);
if (rc == -EINVAL && force) {
context.str = str;
- context.len = scontext_len;
+ context.len = strlen(str) + 1;
str = NULL;
} else if (rc)
goto out_unlock;