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selinux/stable-4.20 PR 20181115

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Merge tag 'selinux-pr-20181115' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull SELinux fixes from Paul Moore:
 "Two small SELinux fixes for v4.20.

  Ondrej's patch adds a check on user input, and my patch ensures we
  don't look past the end of a buffer.

  Both patches are quite small and pass the selinux-testsuite"

* tag 'selinux-pr-20181115' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: fix non-MLS handling in mls_context_to_sid()
  selinux: check length properly in SCTP bind hook
This commit is contained in:
Linus Torvalds 2018-11-15 11:26:09 -06:00
commit da5322e659
2 changed files with 10 additions and 3 deletions
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3
security/selinux/hooks.c
View File

@ -5318,6 +5318,9 @@ static int selinux_sctp_bind_connect(struct sock *sk, int optname,
addr_buf = address;
while (walk_size < addrlen) {
if (walk_size + sizeof(sa_family_t) > addrlen)
return -EINVAL;
addr = addr_buf;
switch (addr->sa_family) {
case AF_UNSPEC:

10
security/selinux/ss/mls.c
View File

@ -245,9 +245,13 @@ int mls_context_to_sid(struct policydb *pol,
char *rangep[2];
if (!pol->mls_enabled) {
if ((def_sid != SECSID_NULL && oldc) || (*scontext) == '\0')
return 0;
return -EINVAL;
/*
* With no MLS, only return -EINVAL if there is a MLS field
* and it did not come from an xattr.
*/
if (oldc && def_sid == SECSID_NULL)
return -EINVAL;
return 0;
}
/*