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CVE-2026-72396 (GCVE-0-2026-72396)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:13
VLAI
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, 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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < 57d583f069fa9d3d0c0831e34b967d1f61edae94 (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < 82e4ab03a6ab9b87667410f5143bc484d7a62bdc (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < c9e04a52663bc6651c06c2427df088b751062bd6 (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < 39a581bd64a0e91112ec8017a2dd4e70c1336e99 (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < aa35cee30686e6be3c890bf741429c5025d55abe (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < 36554592e2f5cac16ff8bf73720d38a6d9ef4a20 (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < 93b96e723bdcba6172a5814262be875abcc5d269 (git)
Affected: 87102808d03948c825c3bdc48316e48f6422fd7e , < 553f9517813912a5ab661af5504485d96824a61c (git)
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Linux Linux Affected: 3.3
Unaffected: 0 , < 3.3 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: adm1275: Prevent reading uninitialized stack\n\nWhile adding support for the ROHM BD127X0 hot-swap controllers, sashiko\nreported an error in device-name comparison, which can lead to reading\nuninitialized stack memory.\n\nQuoting Sashiko:\n\nThis is a pre-existing issue, but I noticed that just before this block in\nadm1275_probe(), there might be an out-of-bounds stack read:\n\n    ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer);\n    if (ret \u003c 0) { ... }\n    for (mid = adm1275_id; mid-\u003ename[0]; mid++) {\n            if (!strncasecmp(mid-\u003ename, block_buffer, strlen(mid-\u003ename)))\n                    break;\n    }\n\nSince i2c_smbus_read_block_data() reads up to 32 bytes into the\nuninitialized stack array block_buffer without appending a null\nterminator, strncasecmp() could read past the valid bytes returned in ret.\n\nFor example, if the device returns a shorter string like \"adm12\", checking\nit against \"adm1275\" up to the length of \"adm1275\" will continue reading\ninto uninitialized stack bounds.\n\nPrevent reading uninitialized memory by zeroing the stack array."
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    "cveId": "CVE-2026-72396",
    "datePublished": "2026-08-15T05:56:23.067Z",
    "dateReserved": "2026-08-09T03:40:39.924Z",
    "dateUpdated": "2026-08-17T05:13:52.535Z",
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T05:26:53+00:00",
      "cve": "CVE-2026-72396",
      "id": "CVE-2026-72396",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: hwmon: adm1275: Prevent reading uninitialized stack",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72396.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T16:25:51Z",
      "cve": "CVE-2026-72396",
      "id": "CVE-2026-72396",
      "initial_release_date": "2026-08-31T16:25:51Z",
      "product_status:known_affected": "265",
      "product_status:known_not_affected": "97",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-72396",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72396.json",
      "version": "2"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.