From a5c3c452b812ed7b8225017d4ff420089ac404af Mon Sep 17 00:00:00 2001
From: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Date: Wed, 8 Jan 2025 07:50:44 -0500
Subject: [PATCH] mesa: use default params for clearbuffer functions
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this might otherwise pull in user-specified params
from the unpack buffer and access arbitrary data

cc: mesa-stable

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32945>
---
 src/mesa/main/bufferobj.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 30b8b2196ae..bf405b2513f 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -995,10 +995,11 @@ convert_clear_buffer_data(struct gl_context *ctx,
                           const GLvoid *data, const char *caller)
 {
    GLenum internalformatBase = _mesa_get_format_base_format(internalformat);
+   struct gl_pixelstore_attrib packing = {.Alignment = 1};
 
    if (_mesa_texstore(ctx, 1, internalformatBase, internalformat,
                       0, &clearValue, 1, 1, 1,
-                      format, type, data, &ctx->Unpack)) {
+                      format, type, data, &packing)) {
       return true;
    }
    else {