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libselinux: seusers: Check for strchr failure

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If we have a malformed seusers entry we may not find the : proceeding
the level and would thus get a NULL.  This can blow up.  Check for this
error and bail gracefully.  Found by coverity

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Dan Walsh 2012-06-21 09:42:45 -04:00 committed by Eric Paris
parent fa7a9a604e
commit bd8ea2eb6c
1 changed files with 1 additions and 0 deletions
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libselinux/src/seusers.c
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@ -298,6 +298,7 @@ int getseuser(const char *username, const char *service,
seuser++; seuser++;
level = strchr(seuser, ':'); level = strchr(seuser, ':');
if (! level) goto err;
*level = 0; *level = 0;
level++; level++;
*r_seuser = strdup(seuser); *r_seuser = strdup(seuser);