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CVE-2026-98678

Linux: iio: adc: ad4030: fix invalid oversampling_ratio validation

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6b0cc4e32599f59c994a60743f53fc72cb2979f4Also 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1CVE List
Published18 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 6b0cc4e32599f59c994a60743f53fc72cb2979f4LinuxCVE List
  • 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

iio: adc: ad4030: fix invalid oversampling_ratio validation

In ad4030_set_avg_frame_len(), the logarithm is calculated before input validation. Passing zero or negative values leads to an undefined result from ilog2().

Validate that the input is strictly positive prior to computing its logarithm.

Text from CVE List

Affected versions 8

  • Linuxaffected: 949abd1ca5a4342d9fb8c774035222e65dd1cfe4 before 6b0cc4e32599f59c994a60743f53fc72cb2979f4CVE List
  • Linuxaffected: 949abd1ca5a4342d9fb8c774035222e65dd1cfe4 before 6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1CVE List
  • Linuxaffected: 949abd1ca5a4342d9fb8c774035222e65dd1cfe4 before d615210564205993e8f0e7ccb57cc2e66b7d5706CVE List
  • Linuxaffected: 6.15CVE List
  • Linuxunaffected: all versions before 6.15CVE List
  • Linuxunaffected: 6.18.56 through 6.18.*CVE List
  • Linuxunaffected: 7.2.10 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 3