Opened 7 years ago

Closed 7 years ago

#6362 closed defect (fixed)

expression is always false

Reported by: Appchecker Owned by:
Priority: normal Component: avformat
Version: git-master Keywords: nut
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Hello!

We've checked your code with appChecker static analyzer (​https://cnpo.ru/en/solutions/appchecker.php) and found possible bug:

​https://github.com/FFmpeg/FFmpeg/blob/59d219b91ef6c8f5415e174c920e07629312d1d6/libavformat/nutdec.c#L205

   if (nut->version < NUT_MIN_VERSION &&
        nut->version > NUT_MAX_VERSION) {
        av_log(s, AV_LOG_ERROR, "Version %d not supported.\n",
               nut->version);
        return AVERROR(ENOSYS);
    }

nut->version can't be < NUT_MIN_VERSION (2) and > NUT_MAX_VERSION (4) at the same time.

Possible defects were found by Echelon Team with appChecker static analyzer(​https://cnpo.ru/en/solutions/appchecker.php)

Change History (1)

comment:1 by Carl Eugen Hoyos, 7 years ago

Component: ffmpeg → avformat
Keywords: nut added; weakness expression false cwe-570 code defect removed
Resolution: → fixed
Status: new → closed
Version: 2.8.11 → git-master

Should be fixed in 20da4135

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