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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-74553

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

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 29c7cb485b321c024dedc168bcbb04451176b163 to < 739d7fc6b6f662c8286912157f0c4912388aa292affected
  • 29c7cb485b321c024dedc168bcbb04451176b163 to < 9a87dfaa05c3c9d3a4cdb7eafc1ab4abc84f6eefaffected
  • 29c7cb485b321c024dedc168bcbb04451176b163 to < 16c45bb3d3434cfb9ea264fa52090d0823240465affected
  • 29c7cb485b321c024dedc168bcbb04451176b163 to < a42d727dae5701deac8bb2a75effadae7d681153affected
  • 29c7cb485b321c024dedc168bcbb04451176b163 to < a7f47f5246cd6c3199e5fb2d4109cc53e766e3f0affected
  • 29c7cb485b321c024dedc168bcbb04451176b163 to < b0e8adb2ccb43009796897ced09f91636685c9d3affected

Linux Linux

Default version status: affected

  • 5.4affected
  • 0 to < 5.4unaffected
  • 6.1.183 to ≤ 6.1.*unaffected
  • 6.6.151 to ≤ 6.6.*unaffected
  • 6.12.103 to ≤ 6.12.*unaffected
  • 6.18.44 to ≤ 6.18.*unaffected
  • 7.1.8 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References