CVE-2026-74553 (GCVE-0-2026-74553)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:27 – Updated: 2026-08-17 05:21
VLAI
Title
hwmon: (nct6775-core) Fix number of temperature registers for NCT6116
Summary
In the Linux kernel, the following vulnerability has been resolved: hwmon: (nct6775-core) Fix number of temperature registers for NCT6116 Unlike NCT6106, NCT6116 only has three temperature registers, and with it only three temperature source and temperature source configuration registers. The register addresses match those of NCT6106 and can be re-used. The code used a separate array to list the temperature source registers for NCT6116, but used the size of the NCT6106 register array to set the number of registers. The NCT6106 register array provides six addresses, while the temperature source register array for NCT6116 only provides three addresses. This causes a KASAN report. BUG: KASAN: global-out-of-bounds in nct6775_probe+0x936/0x46f0 [nct6775] Read of size 2 at addr ffffffffc19561a6 by task modprobe/954 ... Call Trace: dump_stack+0x7d/0xa7 print_address_description.constprop.0+0x1c/0x220 ? __kasan_kmalloc.constprop.0+0xc9/0xd0 ? __kmalloc_node_track_caller+0x194/0x5b0 ? nct6775_probe+0x936/0x46f0 [nct6775] ? nct6775_probe+0x936/0x46f0 [nct6775] ... Fix the problem by hard-coding the number of temperature and temperature configuration registers to three for NCT6116. Drop the unnecessary NCT6116_REG_TEMP_SOURCE array and re-use NCT6106_REG_TEMP_SOURCE.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 29c7cb485b321c024dedc168bcbb04451176b163 , < 9a87dfaa05c3c9d3a4cdb7eafc1ab4abc84f6eef (git)
Affected: 29c7cb485b321c024dedc168bcbb04451176b163 , < 16c45bb3d3434cfb9ea264fa52090d0823240465 (git)
Affected: 29c7cb485b321c024dedc168bcbb04451176b163 , < a42d727dae5701deac8bb2a75effadae7d681153 (git)
Affected: 29c7cb485b321c024dedc168bcbb04451176b163 , < a7f47f5246cd6c3199e5fb2d4109cc53e766e3f0 (git)
Affected: 29c7cb485b321c024dedc168bcbb04451176b163 , < b0e8adb2ccb43009796897ced09f91636685c9d3 (git)
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Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 6.6.151 , ≤ 6.6.* (semver)
Unaffected: 6.12.103 , ≤ 6.12.* (semver)
Unaffected: 6.18.44 , ≤ 6.18.* (semver)
Unaffected: 7.1.8 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "drivers/hwmon/nct6775-core.c"
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      "cpeApplicability": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (nct6775-core) Fix number of temperature registers for NCT6116\n\nUnlike NCT6106, NCT6116 only has three temperature registers, and with\nit only three temperature source and temperature source configuration\nregisters. The register addresses match those of NCT6106 and can be\nre-used.\n\nThe code used a separate array to list the temperature source registers\nfor NCT6116, but used the size of the NCT6106 register array to set\nthe number of registers. The NCT6106 register array provides six addresses,\nwhile the temperature source register array for NCT6116 only provides three\naddresses. This causes a KASAN report.\n\nBUG: KASAN: global-out-of-bounds in nct6775_probe+0x936/0x46f0 [nct6775]\nRead of size 2 at addr ffffffffc19561a6 by task modprobe/954\n...\nCall Trace:\n dump_stack+0x7d/0xa7\n print_address_description.constprop.0+0x1c/0x220\n ? __kasan_kmalloc.constprop.0+0xc9/0xd0\n ? __kmalloc_node_track_caller+0x194/0x5b0\n ? nct6775_probe+0x936/0x46f0 [nct6775]\n ? nct6775_probe+0x936/0x46f0 [nct6775]\n...\n\nFix the problem by hard-coding the number of temperature and temperature\nconfiguration registers to three for NCT6116. Drop the unnecessary\nNCT6116_REG_TEMP_SOURCE array and re-use NCT6106_REG_TEMP_SOURCE."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:21:39.372Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/9a87dfaa05c3c9d3a4cdb7eafc1ab4abc84f6eef"
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          "url": "https://git.kernel.org/stable/c/16c45bb3d3434cfb9ea264fa52090d0823240465"
        },
        {
          "url": "https://git.kernel.org/stable/c/a42d727dae5701deac8bb2a75effadae7d681153"
        },
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          "url": "https://git.kernel.org/stable/c/a7f47f5246cd6c3199e5fb2d4109cc53e766e3f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/b0e8adb2ccb43009796897ced09f91636685c9d3"
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      ],
      "title": "hwmon: (nct6775-core) Fix number of temperature registers for NCT6116",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74553",
    "datePublished": "2026-08-15T12:27:59.472Z",
    "dateReserved": "2026-08-15T05:44:03.916Z",
    "dateUpdated": "2026-08-17T05:21:39.372Z",
    "state": "PUBLISHED"
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      "date": "2026-08-18",
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      "percentile": "0.05365"
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    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-08-15T23:50:25Z",
      "cve": "CVE-2026-74553",
      "id": "CVE-2026-74553",
      "initial_release_date": "2026-08-15T23:50:25Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-74553",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-74553.json",
      "version": "2"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.


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