Fix CVE-2017-6386 (memory leak introduced by fix for CVE-2017-5994). https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5994 Patch copied from upstream source repository: https://cgit.freedesktop.org/virglrenderer/commit/?id=737c3350850ca4dbc5633b3bdb4118176ce59920 From 737c3350850ca4dbc5633b3bdb4118176ce59920 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Tue, 28 Feb 2017 14:52:09 +1000 Subject: renderer: fix memory leak in vertex elements state create Reported-by: Li Qiang Free the vertex array in error path. This was introduced by this commit: renderer: fix heap overflow in vertex elements state create. I rewrote the code to not require the allocation in the first place if we have an error, seems nicer. Signed-off-by: Dave Airlie diff --git a/src/vrend_renderer.c b/src/vrend_renderer.c index 1bca7ad..e5d9f5c 100644 --- a/src/vrend_renderer.c +++ b/src/vrend_renderer.c @@ -1648,18 +1648,19 @@ int vrend_create_vertex_elements_state(struct vrend_context *ctx, unsigned num_elements, const struct pipe_vertex_element *elements) { - struct vrend_vertex_element_array *v = CALLOC_STRUCT(vrend_vertex_element_array); + struct vrend_vertex_element_array *v; const struct util_format_description *desc; GLenum type; int i; uint32_t ret_handle; - if (!v) - return ENOMEM; - if (num_elements > PIPE_MAX_ATTRIBS) return EINVAL; + v = CALLOC_STRUCT(vrend_vertex_element_array); + if (!v) + return ENOMEM; + v->count = num_elements; for (i = 0; i < num_elements; i++) { memcpy(&v->elements[i].base, &elements[i], sizeof(struct pipe_vertex_element)); -- cgit v0.10.2 option value='committer'>committer
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