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[Bug-tar] Potential NULL pointer passed to strlen()

From: Xu Zhongxing
Subject: [Bug-tar] Potential NULL pointer passed to strlen()
Date: Fri, 28 Oct 2011 17:35:04 +0800
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1

In git version, file rtapelib.c, rmt_open__(),

remote_file is initialized to 0. It's not guaranteed to be assigned a new pointer, then passed to strlen(), which would cause a crash.

At line 528: size_t remote_file_len = strlen(remote_file).

- Xu Zhongxing

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