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firmware: arm_scmi: Fix OOB in scmi_power_name_get()

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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>
This commit is contained in:
Geert Uytterhoeven 2026-05-15 11:59:15 +02:00 committed by Sudeep Holla
parent fcca603c6a
commit f9ef3f66f4
1 changed files with 5 additions and 1 deletions
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6
drivers/firmware/arm_scmi/power.c
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@ -204,8 +204,12 @@ 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;
}