diff options
Diffstat (limited to 'meta/recipes-multimedia/libtiff/tiff/0006-fix-heap-buffer-overflow-in-tiffcp-278.patch')
| -rw-r--r-- | meta/recipes-multimedia/libtiff/tiff/0006-fix-heap-buffer-overflow-in-tiffcp-278.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/libtiff/tiff/0006-fix-heap-buffer-overflow-in-tiffcp-278.patch b/meta/recipes-multimedia/libtiff/tiff/0006-fix-heap-buffer-overflow-in-tiffcp-278.patch new file mode 100644 index 0000000000..afd5e59960 --- /dev/null +++ b/meta/recipes-multimedia/libtiff/tiff/0006-fix-heap-buffer-overflow-in-tiffcp-278.patch @@ -0,0 +1,57 @@ +CVE: CVE-2022-0924 +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.burton@arm.com> + +From 1074b9691322b1e3671cd8ea0b6b3509d08978fb Mon Sep 17 00:00:00 2001 +From: 4ugustus <wangdw.augustus@qq.com> +Date: Thu, 10 Mar 2022 08:48:00 +0000 +Subject: [PATCH 6/6] fix heap buffer overflow in tiffcp (#278) + +--- + tools/tiffcp.c | 17 ++++++++++++++++- + 1 file changed, 16 insertions(+), 1 deletion(-) + +diff --git a/tools/tiffcp.c b/tools/tiffcp.c +index 1f889516..552d8fad 100644 +--- a/tools/tiffcp.c ++++ b/tools/tiffcp.c +@@ -1661,12 +1661,27 @@ DECLAREwriteFunc(writeBufferToSeparateStrips) + tdata_t obuf; + tstrip_t strip = 0; + tsample_t s; ++ uint16_t bps = 0, bytes_per_sample; + + obuf = limitMalloc(stripsize); + if (obuf == NULL) + return (0); + _TIFFmemset(obuf, 0, stripsize); + (void) TIFFGetFieldDefaulted(out, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); ++ (void) TIFFGetField(out, TIFFTAG_BITSPERSAMPLE, &bps); ++ if( bps == 0 ) ++ { ++ TIFFError(TIFFFileName(out), "Error, cannot read BitsPerSample"); ++ _TIFFfree(obuf); ++ return 0; ++ } ++ if( (bps % 8) != 0 ) ++ { ++ TIFFError(TIFFFileName(out), "Error, cannot handle BitsPerSample that is not a multiple of 8"); ++ _TIFFfree(obuf); ++ return 0; ++ } ++ bytes_per_sample = bps/8; + for (s = 0; s < spp; s++) { + uint32_t row; + for (row = 0; row < imagelength; row += rowsperstrip) { +@@ -1676,7 +1691,7 @@ DECLAREwriteFunc(writeBufferToSeparateStrips) + + cpContigBufToSeparateBuf( + obuf, (uint8_t*) buf + row * rowsize + s, +- nrows, imagewidth, 0, 0, spp, 1); ++ nrows, imagewidth, 0, 0, spp, bytes_per_sample); + if (TIFFWriteEncodedStrip(out, strip++, obuf, stripsize) < 0) { + TIFFError(TIFFFileName(out), + "Error, can't write strip %"PRIu32, +-- +2.25.1 + |