---
id: CVE-2026-72396
title: 'hwmon: adm1275: Prevent reading uninitialized stack'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  hwmon: adm1275: Prevent reading uninitialized stack

  While adding support for the ROHM BD127X0 hot-swap controllers, sashiko
  reported an error in device-name comparison…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    57d583f069fa9d3d0c0831e34b967d1f61edae94
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    82e4ab03a6ab9b87667410f5143bc484d7a62bdc
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    c9e04a52663bc6651c06c2427df088b751062bd6
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    39a581bd64a0e91112ec8017a2dd4e70c1336e99
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    aa35cee30686e6be3c890bf741429c5025d55abe
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    36554592e2f5cac16ff8bf73720d38a6d9ef4a20
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    93b96e723bdcba6172a5814262be875abcc5d269
  - >-
    Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e <
    553f9517813912a5ab661af5504485d96824a61c
  - Linux 3.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:54:54.603187Z'
published: '2026-08-15'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:55:26.496Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-72396'
references:
  - url: 'https://git.kernel.org/stable/c/57d583f069fa9d3d0c0831e34b967d1f61edae94'
  - url: 'https://git.kernel.org/stable/c/82e4ab03a6ab9b87667410f5143bc484d7a62bdc'
  - url: 'https://git.kernel.org/stable/c/c9e04a52663bc6651c06c2427df088b751062bd6'
  - url: 'https://git.kernel.org/stable/c/39a581bd64a0e91112ec8017a2dd4e70c1336e99'
  - url: 'https://git.kernel.org/stable/c/aa35cee30686e6be3c890bf741429c5025d55abe'
  - url: 'https://git.kernel.org/stable/c/36554592e2f5cac16ff8bf73720d38a6d9ef4a20'
  - url: 'https://git.kernel.org/stable/c/93b96e723bdcba6172a5814262be875abcc5d269'
  - url: 'https://git.kernel.org/stable/c/553f9517813912a5ab661af5504485d96824a61c'
tags:
  - cve.org
epss: 0.0022
epssPercentile: 0.12557
ingestedAt: '2026-11-06T18:00:12.578Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

hwmon: adm1275: Prevent reading uninitialized stack

While adding support for the ROHM BD127X0 hot-swap controllers, sashiko
reported an error in device-name comparison, which can lead to reading
uninitialized stack memory.

Quoting Sashiko:

This is a pre-existing issue, but I noticed that just before this block in
adm1275_probe(), there might be an out-of-bounds stack read:

    ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer);
    if (ret < 0) { ... }
    for (mid = adm1275_id; mid->name[0]; mid++) {
            if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
                    break;
    }

Since i2c_smbus_read_block_data() reads up to 32 bytes into the
uninitialized stack array block_buffer without appending a null
terminator, strncasecmp() could read past the valid bytes returned in ret.

For example, if the device returns a shorter string like "adm12", checking
it against "adm1275" up to the length of "adm1275" will continue reading
into uninitialized stack bounds.

Prevent reading uninitialized memory by zeroing the stack array.

## Affected

- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < 57d583f069fa9d3d0c0831e34b967d1f61edae94`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < 82e4ab03a6ab9b87667410f5143bc484d7a62bdc`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < c9e04a52663bc6651c06c2427df088b751062bd6`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < 39a581bd64a0e91112ec8017a2dd4e70c1336e99`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < aa35cee30686e6be3c890bf741429c5025d55abe`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < 36554592e2f5cac16ff8bf73720d38a6d9ef4a20`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < 93b96e723bdcba6172a5814262be875abcc5d269`
- `Linux >= 87102808d03948c825c3bdc48316e48f6422fd7e < 553f9517813912a5ab661af5504485d96824a61c`
- `Linux 3.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.