CVE-2026-74553 (GCVE-0-2026-74553)
Vulnerability from cvelistv5
Published
2026-08-15 12:27
Modified
2026-08-19 16:38
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 29c7cb485b321c024dedc168bcbb04451176b163 Version: 29c7cb485b321c024dedc168bcbb04451176b163 Version: 29c7cb485b321c024dedc168bcbb04451176b163 Version: 29c7cb485b321c024dedc168bcbb04451176b163 Version: 29c7cb485b321c024dedc168bcbb04451176b163 Version: 29c7cb485b321c024dedc168bcbb04451176b163 |
||
{
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{
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"versionType": "original_commit_for_fix"
}
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}
],
"cpeApplicability": [
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"descriptions": [
{
"lang": "en",
"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."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:38:52.272Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/739d7fc6b6f662c8286912157f0c4912388aa292"
},
{
"url": "https://git.kernel.org/stable/c/9a87dfaa05c3c9d3a4cdb7eafc1ab4abc84f6eef"
},
{
"url": "https://git.kernel.org/stable/c/16c45bb3d3434cfb9ea264fa52090d0823240465"
},
{
"url": "https://git.kernel.org/stable/c/a42d727dae5701deac8bb2a75effadae7d681153"
},
{
"url": "https://git.kernel.org/stable/c/a7f47f5246cd6c3199e5fb2d4109cc53e766e3f0"
},
{
"url": "https://git.kernel.org/stable/c/b0e8adb2ccb43009796897ced09f91636685c9d3"
}
],
"title": "hwmon: (nct6775-core) Fix number of temperature registers for NCT6116",
"x_generator": {
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}
}
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-74553",
"datePublished": "2026-08-15T12:27:59.472Z",
"dateReserved": "2026-08-15T05:44:03.916Z",
"dateUpdated": "2026-08-19T16:38:52.272Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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