diff --git a/0001-mesa-fix-off-by-one-for-newblock-allocation-in-dlist.patch b/0001-mesa-fix-off-by-one-for-newblock-allocation-in-dlist.patch
new file mode 100644
index 0000000..6862136
--- /dev/null
+++ b/0001-mesa-fix-off-by-one-for-newblock-allocation-in-dlist.patch
@@ -0,0 +1,28 @@
+From 460d2c46a903fed295a1528c8b6273dd6b0e0d19 Mon Sep 17 00:00:00 2001
+From: thfrwn <11335318+rfht@users.noreply.github.com>
+Date: Fri, 9 Feb 2024 17:00:55 -0500
+Subject: [PATCH] mesa: fix off-by-one for newblock allocation in dlist_alloc
+
+Cc: mesa-stable
+Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
+Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27556>
+---
+ src/mesa/main/dlist.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
+index b0184a24e20..9213641699a 100644
+--- a/src/mesa/main/dlist.c
++++ b/src/mesa/main/dlist.c
+@@ -1220,7 +1220,7 @@ dlist_alloc(struct gl_context *ctx, OpCode opcode, GLuint bytes, bool align8)
+       ctx->ListState.CurrentPos++;
+    }
+ 
+-   if (ctx->ListState.CurrentPos + numNodes + contNodes > BLOCK_SIZE) {
++   if (ctx->ListState.CurrentPos + numNodes + contNodes >= BLOCK_SIZE) {
+       /* This block is full.  Allocate a new block and chain to it */
+       Node *newblock;
+       Node *n = ctx->ListState.CurrentBlock + ctx->ListState.CurrentPos;
+-- 
+2.45.2
+
diff --git a/mesa.spec b/mesa.spec
index 6896216..eae5fe0 100644
--- a/mesa.spec
+++ b/mesa.spec
@@ -38,7 +38,7 @@
 Name:           mesa
 Summary:        Mesa graphics libraries
 Version:        23.1.4
-Release:        2%{?rctag:.%{rctag}}%{?dist}
+Release:        3%{?rctag:.%{rctag}}%{?dist}
 
 License:        MIT
 URL:            http://www.mesa3d.org
@@ -66,6 +66,9 @@ Patch12: radeonsi-turn-off-glthread.patch
 Patch13: 0001-llvmpipe-only-include-old-Transform-includes-when-ne.patch
 Patch14: 0001-clover-llvm-move-to-modern-pass-manager.patch
 
+# https://issues.redhat.com/browse/RHEL-40566
+Patch15: 0001-mesa-fix-off-by-one-for-newblock-allocation-in-dlist.patch
+
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
 
@@ -587,6 +590,10 @@ done
 %endif
 
 %changelog
+* Thu Jun 20 2024 José Expósito <jexposit@redhat.com> - 23.1.4-3
+- Fix off-by-one error for newblock allocation in dlist_alloc
+  Resolves: https://issues.redhat.com/browse/RHEL-40566
+
 * Thu Nov 23 2023 José Expósito <jexposit@redhat.com> - 23.1.4-2
 - Rebuild against LLVM 17