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| author | Christian Göttsche <cgzones@googlemail.com> | 2020-12-07 14:45:47 +0100 |
|---|---|---|
| committer | Tomáš Mráz <tmraz@redhat.com> | 2020-12-08 18:15:08 +0100 |
| commit | 5b30470ea3f441403c20f8ddc5a62a6db61bf7e3 (patch) | |
| tree | a48131b35099b19dfc865584e4cac395233e7e26 /modules/pam_namespace/pam_namespace.c | |
| parent | deb5a9fb07ce3dad86ad66789c91b703ad12ca2f (diff) | |
pam_namespace: check for string_to_security_class failure
Check for the unlikely case string_to_security_class() does not find the
associated SELinux security class.
This will only happen if the loaded SELinux policy does not define the
class "dir" (which no sane policy does) or querying the selinuxfs
fails.
Suggested by #309
Diffstat (limited to 'modules/pam_namespace/pam_namespace.c')
| -rw-r--r-- | modules/pam_namespace/pam_namespace.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/modules/pam_namespace/pam_namespace.c b/modules/pam_namespace/pam_namespace.c index f8ced1c3..4d4188d0 100644 --- a/modules/pam_namespace/pam_namespace.c +++ b/modules/pam_namespace/pam_namespace.c @@ -844,6 +844,12 @@ static int form_context(const struct polydir_s *polyptr, if (polyptr->method == CONTEXT) { tclass = string_to_security_class("dir"); + if (tclass == 0) { + pam_syslog(idata->pamh, LOG_ERR, + "Error getting dir security class"); + freecon(scon); + return PAM_SESSION_ERR; + } if (security_compute_member(scon, *origcon, tclass, i_context) < 0) { |