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SUSE:SLE-12-SP3:GA
gimp.25275
gimp-CVE-2022-32990.patch
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File gimp-CVE-2022-32990.patch of Package gimp.25275
diff -urp gimp-2.8.18.orig/app/core/gimpchannel.c gimp-2.8.18/app/core/gimpchannel.c --- gimp-2.8.18.orig/app/core/gimpchannel.c 2015-08-20 17:57:24.000000000 -0500 +++ gimp-2.8.18/app/core/gimpchannel.c 2022-07-26 16:12:47.163604475 -0500 @@ -1994,7 +1994,7 @@ gimp_channel_bounds (GimpChannel *channe 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-2.8.18.orig/app/xcf/xcf-load.c gimp-2.8.18/app/xcf/xcf-load.c --- gimp-2.8.18.orig/app/xcf/xcf-load.c 2022-07-26 16:12:26.275494168 -0500 +++ gimp-2.8.18/app/xcf/xcf-load.c 2022-07-27 11:38:45.368964480 -0500 @@ -174,10 +174,18 @@ xcf_load_image (Gimp *gimp, info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1); info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1); info->cp += xcf_read_int32 (info->fp, (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) + { + width = 1; + height = 1; + } + image = gimp_create_image (gimp, width, height, image_type, FALSE); gimp_image_undo_disable (image); @@ -235,6 +243,11 @@ xcf_load_image (Gimp *gimp, */ saved_pos = info->cp; + if (offset < saved_pos) + { + goto error; + } + /* seek to the layer offset */ if (! xcf_seek_pos (info, offset, NULL)) goto error; @@ -318,6 +331,11 @@ xcf_load_image (Gimp *gimp, */ saved_pos = info->cp; + if (offset < saved_pos) + { + goto error; + } + /* seek to the channel offset */ if (! xcf_seek_pos (info, offset, NULL)) goto error; @@ -1178,6 +1196,7 @@ xcf_load_layer (XcfInfo *info, gint type; 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. @@ -1188,9 +1207,10 @@ xcf_load_layer (XcfInfo *info, info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1); info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1); info->cp += xcf_read_int32 (info->fp, (guint32 *) &type, 1); - if (width <= 0 || height <= 0) - return NULL; - + if (width <= 0 || height <= 0 || + width > GIMP_MAX_IMAGE_SIZE || height > GIMP_MAX_IMAGE_SIZE) + return NULL; + info->cp += xcf_read_string (info->fp, &name, 1); /* create a new layer */ @@ -1224,6 +1244,7 @@ xcf_load_layer (XcfInfo *info, } /* read the hierarchy and layer mask offsets */ + cur_offset = info->cp; info->cp += xcf_read_int32 (info->fp, &hierarchy_offset, 1); info->cp += xcf_read_int32 (info->fp, &layer_mask_offset, 1); @@ -1233,6 +1254,10 @@ xcf_load_layer (XcfInfo *info, */ if (! gimp_viewable_get_children (GIMP_VIEWABLE (layer))) { + if (hierarchy_offset < cur_offset) + { + goto error; + } if (! xcf_seek_pos (info, hierarchy_offset, NULL)) goto error; @@ -1252,6 +1277,10 @@ xcf_load_layer (XcfInfo *info, /* read in the layer mask */ if (layer_mask_offset != 0) { + if (layer_mask_offset < cur_offset) + { + goto error; + } if (! xcf_seek_pos (info, layer_mask_offset, NULL)) goto error; @@ -1296,6 +1325,7 @@ 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. @@ -1305,7 +1335,8 @@ xcf_load_channel (XcfInfo *info, /* read in the layer width, height and name */ info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1); info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1); - if (width <= 0 || height <= 0) + if (width <= 0 || height <= 0 || + width > GIMP_MAX_IMAGE_SIZE || height > GIMP_MAX_IMAGE_SIZE) return NULL; info->cp += xcf_read_string (info->fp, &name, 1); @@ -1322,9 +1353,15 @@ xcf_load_channel (XcfInfo *info, xcf_progress_update (info); - /* read the hierarchy and layer mask offsets */ + /* read the hierarchy offset */ + cur_offset = info->cp; info->cp += xcf_read_int32 (info->fp, &hierarchy_offset, 1); + if (hierarchy_offset < cur_offset) + { + goto error; + } + /* read in the hierarchy */ if (!xcf_seek_pos (info, hierarchy_offset, NULL)) goto error; @@ -1357,6 +1394,7 @@ 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. @@ -1366,8 +1404,11 @@ xcf_load_layer_mask (XcfInfo *info, /* read in the layer width, height and name */ info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1); info->cp += xcf_read_int32 (info->fp, (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) + { + return NULL; + } info->cp += xcf_read_string (info->fp, &name, 1); @@ -1384,9 +1425,15 @@ 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; info->cp += xcf_read_int32 (info->fp, &hierarchy_offset, 1); + if (hierarchy_offset < cur_offset) + { + goto error; + } + /* read in the hierarchy */ if (! xcf_seek_pos (info, hierarchy_offset, NULL)) goto error; @@ -1416,6 +1463,7 @@ xcf_load_hierarchy (XcfInfo *info, gint width; gint height; gint bpp; + goffset cur_offset; info->cp += xcf_read_int32 (info->fp, (guint32 *) &width, 1); info->cp += xcf_read_int32 (info->fp, (guint32 *) &height, 1); @@ -1429,8 +1477,14 @@ xcf_load_hierarchy (XcfInfo *info, bpp != tile_manager_bpp (tiles)) return FALSE; + cur_offset = info->cp; info->cp += xcf_read_int32 (info->fp, &offset, 1); /* top level */ + if (offset < cur_offset) + { + return FALSE; + } + /* seek to the level offset */ if (!xcf_seek_pos (info, offset, NULL)) return FALSE;
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