From 8e493e2d6cd4bced26bc1cf3eecc2a0ed86011a5 Mon Sep 17 00:00:00 2001
From: Victor Julien <vjulien@oisf.net>
Date: Thu, 6 Aug 2026 11:34:14 +0000
Subject: [PATCH] mpm/ac: fix PID mask in SCACSearch u32 branch

Lookup code used a different mask than the construct code.

Ticket: #8820.
---
 src/util-mpm-ac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util-mpm-ac.c b/src/util-mpm-ac.c
index bb747e34e8..64081db757 100644
--- a/src/util-mpm-ac.c
+++ b/src/util-mpm-ac.c
@@ -920,7 +920,7 @@ uint32_t SCACSearch(const MpmCtx *mpm_ctx, MpmThreadCtx *mpm_thread_ctx,
                 const uint32_t *pids = ctx->output_table[state & 0x00FFFFFF].pids;
                 for (uint32_t k = 0; k < no_of_entries; k++) {
                     if (pids[k] & AC_CASE_MASK) {
-                        const uint32_t lower_pid = pids[k] & 0x0000FFFF;
+                        const uint32_t lower_pid = pids[k] & AC_PID_MASK;
                         const SCACPatternList *pat = &pid_pat_list[lower_pid];
                         const int offset = i - pat->patlen + 1;