File CVE-2025-49112.patch of Package valkey

From 0b8147ca27d2d06efadf37f0f064f19607e7e1f8 Mon Sep 17 00:00:00 2001
From: Zeroday BYTE <github@zerodaysec.org>
Date: Tue, 20 May 2025 00:59:10 +0700
Subject: [PATCH] Update networking.c

Signed-off-by: Zeroday BYTE <github@zerodaysec.org>
---
 src/networking.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/networking.c b/src/networking.c
index 5f57050971..78b62d0c59 100644
--- a/src/networking.c
+++ b/src/networking.c
@@ -883,7 +883,7 @@ void setDeferredReply(client *c, void *node, const char *s, size_t length) {
      * - It has enough room already allocated
      * - And not too large (avoid large memmove)
      * - And the client is not in a pending I/O state */
-    if (ln->prev != NULL && (prev = listNodeValue(ln->prev)) && prev->size - prev->used > 0 &&
+    if (ln->prev != NULL && (prev = listNodeValue(ln->prev)) && prev->used < prev->size &&
         c->io_write_state != CLIENT_PENDING_IO) {
         size_t len_to_copy = prev->size - prev->used;
         if (len_to_copy > length) len_to_copy = length;