hwmon: (nct6775-core) Fix number of temperature registers for NCT6116

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Summary

CVECVE-2026-74553
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 13:18:00 UTC
Updated2026-08-15 13:18:00 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 29c7cb485b321c024dedc168bcbb04451176b163 9a87dfaa05c3c9d3a4cdb7eafc1ab4abc84f6eef git Not specified
CNA Linux Linux affected 29c7cb485b321c024dedc168bcbb04451176b163 16c45bb3d3434cfb9ea264fa52090d0823240465 git Not specified
CNA Linux Linux affected 29c7cb485b321c024dedc168bcbb04451176b163 a42d727dae5701deac8bb2a75effadae7d681153 git Not specified
CNA Linux Linux affected 29c7cb485b321c024dedc168bcbb04451176b163 a7f47f5246cd6c3199e5fb2d4109cc53e766e3f0 git Not specified
CNA Linux Linux affected 29c7cb485b321c024dedc168bcbb04451176b163 b0e8adb2ccb43009796897ced09f91636685c9d3 git Not specified
CNA Linux Linux affected 5.4 Not specified
CNA Linux Linux unaffected 5.4 semver Not specified
CNA Linux Linux unaffected 6.6.151 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc6 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9a87dfaa05c3c9d3a4cdb7eafc1ab4abc84f6eef 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a42d727dae5701deac8bb2a75effadae7d681153 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/16c45bb3d3434cfb9ea264fa52090d0823240465 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b0e8adb2ccb43009796897ced09f91636685c9d3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a7f47f5246cd6c3199e5fb2d4109cc53e766e3f0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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