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firmware: arm_scmi: Fix OOB in scmi_power_name_get()

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[ Upstream commit f9ef3f66f4 ]

scmi_power_name_get() does not validate the domain number passed by the
external caller, which may lead to an out-of-bounds access.

Fix this by returning "unknown" for invalid domains, like
scmi_reset_name_get() does.

Fixes: 76a6550990 ("firmware: arm_scmi: add initial support for power protocol")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://patch.msgid.link/75caae28bdffb55199a0bc6cac5df112a966c608.1778838987.git.geert+renesas@glider.be
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Geert Uytterhoeven
2026-07-24 16:03:02 +02:00
committed by Greg Kroah-Hartman
parent 8972d8f383
commit 30aa348494
1 changed files with 5 additions and 1 deletions
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drivers/firmware/arm_scmi/power.c
+5 -1
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@@ -194,8 +194,12 @@ scmi_power_name_get(const struct scmi_protocol_handle *ph,
u32 domain)
{
struct scmi_power_info *pi = ph->get_priv(ph);
struct power_dom_info *dom = pi->dom_info + domain;
struct power_dom_info *dom;
if (domain >= pi->num_domains)
return "unknown";
dom = pi->dom_info + domain;
return dom->name;
}