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| author | Su_Laus <sulau@freenet.de> | 2023-02-03 17:38:55 +0100 |
|---|---|---|
| committer | Su_Laus <sulau@freenet.de> | 2023-02-03 17:38:55 +0100 |
| commit | d63de61b1ec3385f6383ef9a1f453e4b8b11d536 (patch) | |
| tree | fc72894b0de5961014e7032b8d60d1d48d9a5957 | |
| parent | a63e18ca432e1ee4761309a53019e32bcc446b1d (diff) | |
| download | libtiff-git-d63de61b1ec3385f6383ef9a1f453e4b8b11d536.tar.gz | |
TIFFClose() avoid NULL pointer dereferencing. fix#515
Closes #515
| -rw-r--r-- | libtiff/tif_close.c | 11 | ||||
| -rw-r--r-- | tools/tiffcrop.c | 5 |
2 files changed, 11 insertions, 5 deletions
diff --git a/libtiff/tif_close.c b/libtiff/tif_close.c index 985d290c..907d7f13 100644 --- a/libtiff/tif_close.c +++ b/libtiff/tif_close.c @@ -147,9 +147,12 @@ void _TIFFCleanupIFDOffsetAndNumberMaps(TIFF *tif) void TIFFClose(TIFF *tif) { - TIFFCloseProc closeproc = tif->tif_closeproc; - thandle_t fd = tif->tif_clientdata; + if (tif != NULL) + { + TIFFCloseProc closeproc = tif->tif_closeproc; + thandle_t fd = tif->tif_clientdata; - TIFFCleanup(tif); - (void)(*closeproc)(fd); + TIFFCleanup(tif); + (void)(*closeproc)(fd); + } } diff --git a/tools/tiffcrop.c b/tools/tiffcrop.c index 7db69883..84e26ac6 100644 --- a/tools/tiffcrop.c +++ b/tools/tiffcrop.c @@ -2920,7 +2920,10 @@ int main(int argc, char *argv[]) } } - TIFFClose(out); + if (out != NULL) + { + TIFFClose(out); + } return (0); } /* end main */ |