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hwmon: (peci/cputemp) Fix off-by-one in cputemp_is_visible()

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commit b0c9d8ae71 upstream.

cputemp_is_visible() validates the channel index against
CPUTEMP_CHANNEL_NUMS, but currently uses '>' instead of '>='.
As a result, channel == CPUTEMP_CHANNEL_NUMS is not rejected even though
valid indices are 0 .. CPUTEMP_CHANNEL_NUMS - 1.

Fix the bounds check by using '>=' so invalid channel indices are
rejected before indexing the core bitmap.

Fixes: bf3608f338 ("hwmon: peci: Add cputemp driver")
Cc: stable@vger.kernel.org
Signed-off-by: Sanman Pradhan <psanman@juniper.net>
Link: https://lore.kernel.org/r/20260323002352.93417-3-sanman.pradhan@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sanman Pradhan
2026-04-02 13:07:25 +02:00
committed by Greg Kroah-Hartman
parent 7c0666a26b
commit ebdd28353b
1 changed files with 1 additions and 1 deletions
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drivers/hwmon/peci/cputemp.c
+1 -1
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@@ -339,7 +339,7 @@ static umode_t cputemp_is_visible(const void *data, enum hwmon_sensor_types type
{
const struct peci_cputemp *priv = data;
if (channel > CPUTEMP_CHANNEL_NUMS)
if (channel >= CPUTEMP_CHANNEL_NUMS)
return 0;
if (channel < channel_core)