On Mon, Nov 28, 2022 at 7:47 AM Qiu, Zheng <[email protected]> wrote:
>
> This patch contains a fix for CVE-2022-3970
>
> Reference:
> https://nvd.nist.gov/vuln/detail/CVE-2022-3970
> https://security-tracker.debian.org/tracker/CVE-2022-3970
>
> Patch generated from :
> https://gitlab.com/libtiff/libtiff/-/commit/227500897dfb07fb7d27f7aa570050e62617e3be
>
> Upstream-Status: Accepted
>
> Signed-off-by: Zheng Qiu <[email protected]>
> ---
> .../libtiff/tiff/CVE-2022-3970.patch | 38 +++++++++++++++++++
> meta/recipes-multimedia/libtiff/tiff_4.3.0.bb | 1 +
> 2 files changed, 39 insertions(+)
> create mode 100644 meta/recipes-multimedia/libtiff/tiff/CVE-2022-3970.patch
>
> diff --git a/meta/recipes-multimedia/libtiff/tiff/CVE-2022-3970.patch
> b/meta/recipes-multimedia/libtiff/tiff/CVE-2022-3970.patch
> new file mode 100644
> index 0000000000..e8f143933a
> --- /dev/null
> +++ b/meta/recipes-multimedia/libtiff/tiff/CVE-2022-3970.patch
> @@ -0,0 +1,38 @@
> +From 227500897dfb07fb7d27f7aa570050e62617e3be Mon Sep 17 00:00:00 2001
> +From: Even Rouault <[email protected]>
> +Date: Tue, 8 Nov 2022 15:16:58 +0100
> +Subject: [PATCH] TIFFReadRGBATileExt(): fix (unsigned) integer overflow on
> + strips/tiles > 2 GB
> +
> +Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=53137
Missing CVE:, Upstream-Status:, and Signed-off-by:
Please submit a V2 with these included.
Thanks,
Steve
> +---
> + libtiff/tif_getimage.c | 8 ++++----
> + 1 file changed, 4 insertions(+), 4 deletions(-)
> +
> +diff --git a/libtiff/tif_getimage.c b/libtiff/tif_getimage.c
> +index a4d0c1d6..60b94d8e 100644
> +--- a/libtiff/tif_getimage.c
> ++++ b/libtiff/tif_getimage.c
> +@@ -3016,15 +3016,15 @@ TIFFReadRGBATileExt(TIFF* tif, uint32_t col,
> uint32_t row, uint32_t * raster, in
> + return( ok );
> +
> + for( i_row = 0; i_row < read_ysize; i_row++ ) {
> +- memmove( raster + (tile_ysize - i_row - 1) * tile_xsize,
> +- raster + (read_ysize - i_row - 1) * read_xsize,
> ++ memmove( raster + (size_t)(tile_ysize - i_row - 1) * tile_xsize,
> ++ raster + (size_t)(read_ysize - i_row - 1) * read_xsize,
> + read_xsize * sizeof(uint32_t) );
> +- _TIFFmemset( raster + (tile_ysize - i_row - 1) *
> tile_xsize+read_xsize,
> ++ _TIFFmemset( raster + (size_t)(tile_ysize - i_row - 1) *
> tile_xsize+read_xsize,
> + 0, sizeof(uint32_t) * (tile_xsize - read_xsize) );
> + }
> +
> + for( i_row = read_ysize; i_row < tile_ysize; i_row++ ) {
> +- _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize,
> ++ _TIFFmemset( raster + (size_t)(tile_ysize - i_row - 1) * tile_xsize,
> + 0, sizeof(uint32_t) * tile_xsize );
> + }
> +
> +--
> +2.33.0
> +
> diff --git a/meta/recipes-multimedia/libtiff/tiff_4.3.0.bb
> b/meta/recipes-multimedia/libtiff/tiff_4.3.0.bb
> index 29a2c38d8e..7df4369755 100644
> --- a/meta/recipes-multimedia/libtiff/tiff_4.3.0.bb
> +++ b/meta/recipes-multimedia/libtiff/tiff_4.3.0.bb
> @@ -24,6 +24,7 @@ SRC_URI =
> "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
> file://CVE-2022-34526.patch \
> file://CVE-2022-2869.patch \
> file://CVE-2022-2867.patch \
> + file://CVE-2022-3970.patch \
> file://b258ed69a485a9cfb299d9f060eb2a46c54e5903.patch \
>
> file://0001-tiffcrop-Fix-issue-330-and-some-more-from-320-to-349.patch \
> file://CVE-2022-2953.patch \
> --
> 2.33.0
>
>
>
>
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