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selinux/stable-5.17 PR 20220203

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Merge tag 'selinux-pr-20220203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull selinux fix from Paul Moore:
 "One small SELinux patch to ensure that a policy structure field is
  properly reset after freeing so that we don't inadvertently do a
  double-free on certain error conditions"

* tag 'selinux-pr-20220203' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: fix double free of cond_list on error paths
This commit is contained in:
Linus Torvalds 2022-02-03 16:44:12 -08:00
commit 551007a8f1
1 changed files with 2 additions and 1 deletions
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3
security/selinux/ss/conditional.c
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@ -152,6 +152,8 @@ static void cond_list_destroy(struct policydb *p)
for (i = 0; i < p->cond_list_len; i++)
cond_node_destroy(&p->cond_list[i]);
kfree(p->cond_list);
p->cond_list = NULL;
p->cond_list_len = 0;
}
void cond_policydb_destroy(struct policydb *p)
@ -441,7 +443,6 @@ int cond_read_list(struct policydb *p, void *fp)
return 0;
err:
cond_list_destroy(p);
p->cond_list = NULL;
return rc;
}