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home:dirkmueller:acdc:as_python3_module
gimp
gimp-CVE-2022-32990.patch
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File gimp-CVE-2022-32990.patch of Package gimp
diff -urp gimp-2.10.30.orig/app/core/gimpchannel.c gimp-2.10.30/app/core/gimpchannel.c --- gimp-2.10.30.orig/app/core/gimpchannel.c 2021-12-19 14:48:32.000000000 -0600 +++ gimp-2.10.30/app/core/gimpchannel.c 2022-08-01 16:19:08.966210849 -0500 @@ -1824,7 +1824,7 @@ gimp_channel_boundary (GimpChannel gboolean gimp_channel_is_empty (GimpChannel *channel) { - g_return_val_if_fail (GIMP_IS_CHANNEL (channel), FALSE); + g_return_val_if_fail (GIMP_IS_CHANNEL (channel), TRUE); return GIMP_CHANNEL_GET_CLASS (channel)->is_empty (channel); } diff -urp gimp-2.10.30.orig/app/xcf/xcf-load.c gimp-2.10.30/app/xcf/xcf-load.c --- gimp-2.10.30.orig/app/xcf/xcf-load.c 2021-12-19 14:48:33.000000000 -0600 +++ gimp-2.10.30/app/xcf/xcf-load.c 2022-08-01 16:19:20.814273376 -0500 @@ -183,10 +183,19 @@ xcf_load_image (Gimp *gimp, xcf_read_int32 (info, (guint32 *) &width, 1); xcf_read_int32 (info, (guint32 *) &height, 1); xcf_read_int32 (info, (guint32 *) &image_type, 1); - if (image_type < GIMP_RGB || image_type > GIMP_INDEXED || - width <= 0 || height <= 0) + if (image_type < GIMP_RGB || image_type > GIMP_INDEXED) goto hard_error; + /* Be lenient with corrupt image dimensions. + * Hopefully layer dimensions will be valid. */ + if (width <= 0 || height <= 0 || + width > GIMP_MAX_IMAGE_SIZE || height > GIMP_MAX_IMAGE_SIZE) + { + GIMP_LOG (XCF, "Invalid image size %d x %d, setting to 1x1.", width, height); + width = 1; + height = 1; + } + if (info->file_version >= 4) { gint p; @@ -476,6 +485,13 @@ xcf_load_image (Gimp *gimp, */ saved_pos = info->cp; + if (offset < saved_pos) + { + GIMP_LOG (XCF, "Invalid layer offset: %" G_GOFFSET_FORMAT + " at offset: %" G_GOFFSET_FORMAT, offset, saved_pos); + goto error; + } + /* seek to the layer offset */ if (! xcf_seek_pos (info, offset, NULL)) goto error; @@ -616,6 +632,13 @@ xcf_load_image (Gimp *gimp, */ saved_pos = info->cp; + if (offset < saved_pos) + { + GIMP_LOG (XCF, "Invalid channel offset: %" G_GOFFSET_FORMAT + " at offset: % "G_GOFFSET_FORMAT, offset, saved_pos); + goto error; + } + /* seek to the channel offset */ if (! xcf_seek_pos (info, offset, NULL)) goto error; @@ -625,6 +648,7 @@ xcf_load_image (Gimp *gimp, if (!channel) { n_broken_channels++; + GIMP_LOG (XCF, "Failed to load channel."); if (! xcf_seek_pos (info, saved_pos, NULL)) goto error; @@ -1867,6 +1891,7 @@ xcf_load_layer (XcfInfo *info, const Babl *format; gboolean is_fs_drawable; gchar *name; + goffset cur_offset; /* check and see if this is the drawable the floating selection * is attached to. if it is then we'll do the attachment in our caller. @@ -1918,7 +1943,8 @@ xcf_load_layer (XcfInfo *info, return NULL; } - if (width <= 0 || height <= 0) + if (width <= 0 || height <= 0 || + width > GIMP_MAX_IMAGE_SIZE || height > GIMP_MAX_IMAGE_SIZE) { gboolean is_group_layer = FALSE; gboolean is_text_layer = FALSE; @@ -1983,6 +2009,7 @@ xcf_load_layer (XcfInfo *info, } /* read the hierarchy and layer mask offsets */ + cur_offset = info->cp; xcf_read_offset (info, &hierarchy_offset, 1); xcf_read_offset (info, &layer_mask_offset, 1); @@ -1992,6 +2019,11 @@ xcf_load_layer (XcfInfo *info, */ if (! gimp_viewable_get_children (GIMP_VIEWABLE (layer))) { + if (hierarchy_offset < cur_offset) + { + GIMP_LOG (XCF, "Invalid layer hierarchy offset!"); + goto error; + } if (! xcf_seek_pos (info, hierarchy_offset, NULL)) goto error; @@ -2015,6 +2047,11 @@ xcf_load_layer (XcfInfo *info, /* read in the layer mask */ if (layer_mask_offset != 0) { + if (layer_mask_offset < cur_offset) + { + GIMP_LOG (XCF, "Invalid layer mask offset!"); + goto error; + } if (! xcf_seek_pos (info, layer_mask_offset, NULL)) goto error; @@ -2071,6 +2108,7 @@ xcf_load_channel (XcfInfo *info, gboolean is_fs_drawable; gchar *name; GimpRGB color = { 0.0, 0.0, 0.0, GIMP_OPACITY_OPAQUE }; + goffset cur_offset; /* check and see if this is the drawable the floating selection * is attached to. if it is then we'll do the attachment in our caller. @@ -2080,10 +2118,16 @@ xcf_load_channel (XcfInfo *info, /* read in the layer width, height and name */ xcf_read_int32 (info, (guint32 *) &width, 1); xcf_read_int32 (info, (guint32 *) &height, 1); - if (width <= 0 || height <= 0) - return NULL; + if (width <= 0 || height <= 0 || + width > GIMP_MAX_IMAGE_SIZE || height > GIMP_MAX_IMAGE_SIZE) + { + GIMP_LOG (XCF, "Invalid channel size %d x %d.", width, height); + return NULL; + } xcf_read_string (info, &name, 1); + GIMP_LOG (XCF, "Channel width=%d, height=%d, name='%s'", + width, height, name); /* create a new channel */ channel = gimp_channel_new (image, width, height, name, &color); @@ -2097,9 +2141,16 @@ xcf_load_channel (XcfInfo *info, xcf_progress_update (info); - /* read the hierarchy and layer mask offsets */ + /* read the hierarchy offset */ + cur_offset = info->cp; xcf_read_offset (info, &hierarchy_offset, 1); + if (hierarchy_offset < cur_offset) + { + GIMP_LOG (XCF, "Invalid hierarchy offset!"); + goto error; + } + /* read in the hierarchy */ if (! xcf_seek_pos (info, hierarchy_offset, NULL)) goto error; @@ -2143,6 +2194,7 @@ xcf_load_layer_mask (XcfInfo *info, gboolean is_fs_drawable; gchar *name; GimpRGB color = { 0.0, 0.0, 0.0, GIMP_OPACITY_OPAQUE }; + goffset cur_offset; /* check and see if this is the drawable the floating selection * is attached to. if it is then we'll do the attachment in our caller. @@ -2152,10 +2204,16 @@ xcf_load_layer_mask (XcfInfo *info, /* read in the layer width, height and name */ xcf_read_int32 (info, (guint32 *) &width, 1); xcf_read_int32 (info, (guint32 *) &height, 1); - if (width <= 0 || height <= 0) - return NULL; + if (width <= 0 || height <= 0 || + width > GIMP_MAX_IMAGE_SIZE || height > GIMP_MAX_IMAGE_SIZE) + { + GIMP_LOG (XCF, "Invalid layer mask size %d x %d.", width, height); + return NULL; + } xcf_read_string (info, &name, 1); + GIMP_LOG (XCF, "Layer mask width=%d, height=%d, name='%s'", + width, height, name); /* create a new layer mask */ layer_mask = gimp_layer_mask_new (image, width, height, name, &color); @@ -2170,9 +2228,16 @@ xcf_load_layer_mask (XcfInfo *info, xcf_progress_update (info); - /* read the hierarchy and layer mask offsets */ + /* read the hierarchy offset */ + cur_offset = info->cp; xcf_read_offset (info, &hierarchy_offset, 1); + if (hierarchy_offset < cur_offset) + { + GIMP_LOG (XCF, "Invalid hierarchy offset!"); + goto error; + } + /* read in the hierarchy */ if (! xcf_seek_pos (info, hierarchy_offset, NULL)) goto error; @@ -2210,6 +2275,7 @@ xcf_load_buffer (XcfInfo *info, gint width; gint height; gint bpp; + goffset cur_offset; format = gegl_buffer_get_format (buffer); @@ -2225,8 +2291,15 @@ xcf_load_buffer (XcfInfo *info, bpp != babl_format_get_bytes_per_pixel (format)) return FALSE; + cur_offset = info->cp; xcf_read_offset (info, &offset, 1); /* top level */ + if (offset < cur_offset) + { + GIMP_LOG (XCF, "Invalid buffer offset!"); + return FALSE; + } + /* seek to the level offset */ if (! xcf_seek_pos (info, offset, NULL)) return FALSE;
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