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commit fa3d493f7a573b4e4e2538486e912093a0161c1b
parent 8636b1dbce854363cd98922b3e4b49a603c4d5fd
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed, 13 Mar 2019 11:10:42 -0700

Merge tag 'selinux-pr-20190312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux fixes from Paul Moore:
 "Two small fixes for SELinux in v5.1: one adds a buffer length check to
  the SELinux SCTP code, the other ensures that the SELinux labeling for
  a NFS mount is not disabled if the filesystem is mounted twice"

* tag 'selinux-pr-20190312' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  security/selinux: fix SECURITY_LSM_NATIVE_LABELS on reused superblock
  selinux: add the missing walk_size + len check in selinux_sctp_bind_connect

Diffstat:
Msecurity/selinux/hooks.c | 8+++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c @@ -939,8 +939,11 @@ static int selinux_sb_clone_mnt_opts(const struct super_block *oldsb, BUG_ON(!(oldsbsec->flags & SE_SBINITIALIZED)); /* if fs is reusing a sb, make sure that the contexts match */ - if (newsbsec->flags & SE_SBINITIALIZED) + if (newsbsec->flags & SE_SBINITIALIZED) { + if ((kern_flags & SECURITY_LSM_NATIVE_LABELS) && !set_context) + *set_kern_flags |= SECURITY_LSM_NATIVE_LABELS; return selinux_cmp_sb_context(oldsb, newsb); + } mutex_lock(&newsbsec->lock); @@ -5134,6 +5137,9 @@ static int selinux_sctp_bind_connect(struct sock *sk, int optname, return -EINVAL; } + if (walk_size + len > addrlen) + return -EINVAL; + err = -EINVAL; switch (optname) { /* Bind checks */