patch 'power: fix off-by-one in uncore env bounds check' has been queued to stable release 25.11.3

[Kevin Traynor]

Hi,

FYI, your patch has been queued to stable release 25.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/01/26. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable/commit/91162899d50b96070eeac58a87d87c7853448796

Thanks.

Kevin

---
>From 91162899d50b96070eeac58a87d87c7853448796 Mon Sep 17 00:00:00 2001
From: Denis Sergeev <denserg.edu at gmail.com>
Date: Wed, 3 Jun 2026 07:21:53 +0300
Subject: [PATCH] power: fix off-by-one in uncore env bounds check

[ upstream commit f9c164dec1285e27c7b4a69491bffa499eb460ad ]

The condition in rte_power_set_uncore_env() uses '<=' instead of '<'
when comparing the env argument against the size of uncore_env_str[].
Since RTE_DIM(uncore_env_str) equals 4 and valid indices are 0..3,
a caller passing env=4 bypasses the guard and causes an out-of-bounds
read of uncore_env_str[4] at two sites within the same block.

Fix by replacing '<=' with '<', consistent with the correct pattern
already used in rte_power_uncore_init() in the same file.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: ac1edcb6621a ("power: refactor uncore power management API")

Signed-off-by: Denis Sergeev <denserg.edu at gmail.com>
---
 lib/power/rte_power_uncore.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/power/rte_power_uncore.c b/lib/power/rte_power_uncore.c
index 25bdb113c5..b50e09a2ad 100644
--- a/lib/power/rte_power_uncore.c
+++ b/lib/power/rte_power_uncore.c
@@ -68,5 +68,5 @@ rte_power_set_uncore_env(enum rte_uncore_power_mgmt_env env)
 		env = RTE_UNCORE_PM_ENV_INTEL_UNCORE;
 
-	if (env <= RTE_DIM(uncore_env_str)) {
+	if (env < RTE_DIM(uncore_env_str)) {
 		RTE_TAILQ_FOREACH(ops, &uncore_ops_list, next)
 			if (strncmp(ops->name, uncore_env_str[env],
-- 
2.55.0

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2026-07-28 16:54:51.356414056 +0100
+++ 0018-power-fix-off-by-one-in-uncore-env-bounds-check.patch	2026-07-28 16:54:50.759429722 +0100
@@ -1 +1 @@
-From f9c164dec1285e27c7b4a69491bffa499eb460ad Mon Sep 17 00:00:00 2001
+From 91162899d50b96070eeac58a87d87c7853448796 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit f9c164dec1285e27c7b4a69491bffa499eb460ad ]
+
@@ -18 +19,0 @@
-Cc: stable at dpdk.org