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tools: fix crash in virt-login-shell if config doesn't exist

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If the 'allowed_users' config setting in virt-login-shell.conf
does not exist, we dereference a NULL pointer resulting in a
crash. We should check for this case and thus ensure the user
is denied access gracefully.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2019-08-01 12:07:47 +01:00
parent 59a3b79506
commit 275bcbebab
1 changed files with 1 additions and 1 deletions
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tools/virt-login-shell.c
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@ -54,7 +54,7 @@ static int virLoginShellAllowedUser(virConfPtr conf,
goto cleanup;
for (entries = users; *entries; entries++) {
for (entries = users; entries && *entries; entries++) {
char *entry = *entries;
/*
If string begins with a % this indicates a linux group.