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Avoid dereference of potentially null arguments #22

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Avoid dereference of potentially null arguments #22

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9 changes: 5 additions & 4 deletions pam_user_authorized_keys.c
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Original file line number Diff line number Diff line change
Expand Up @@ -158,11 +158,12 @@ parse_authorized_key_file(const char *user,
int
pam_user_key_allowed(const char *ruser, Key * key)
{
struct passwd *pw;
return
pamsshagentauth_user_key_allowed2(getpwuid(authorized_keys_file_allowed_owner_uid),
key, authorized_keys_file)
|| pamsshagentauth_user_key_allowed2(getpwuid(0), key,
authorized_keys_file)
( (pw = getpwuid(authorized_keys_file_allowed_owner_uid)) &&
pamsshagentauth_user_key_allowed2(pw, key, authorized_keys_file))
|| ((pw = getpwuid(0)) &&
pamsshagentauth_user_key_allowed2(pw, key, authorized_keys_file))
|| pamsshagentauth_user_key_command_allowed2(authorized_keys_command,
authorized_keys_command_user,
getpwnam(ruser), key);
Expand Down