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selinux/stable-5.3 PR 20190726

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Merge tag 'selinux-pr-20190726' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux fix from Paul Moore:
 "One small SELinux patch to add some proper bounds/overflow checking
  when adding a new sid/secid"

* tag 'selinux-pr-20190726' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: check sidtab limit before adding a new entry
This commit is contained in:
Linus Torvalds 2019-07-26 19:13:38 -07:00
commit 40233e7c44
1 changed files with 5 additions and 0 deletions
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5
security/selinux/ss/sidtab.c
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@ -286,6 +286,11 @@ static int sidtab_reverse_lookup(struct sidtab *s, struct context *context,
++count;
}
/* bail out if we already reached max entries */
rc = -EOVERFLOW;
if (count >= SIDTAB_MAX)
goto out_unlock;
/* insert context into new entry */
rc = -ENOMEM;
dst = sidtab_do_lookup(s, count, 1);