{"id":"CVE-2026-98678","state":"PUBLISHED","title":"iio: adc: ad4030: fix invalid oversampling_ratio validation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4030: fix invalid oversampling_ratio validation\n\nIn ad4030_set_avg_frame_len(), the logarithm is calculated before input\nvalidation. Passing zero or negative values leads to an undefined result\nfrom ilog2().\n\nValidate that the input is strictly positive prior to computing its\nlogarithm.","publishedAt":"2026-10-18T15:45:35.605Z","updatedAt":"2026-10-19T09:23:47.783Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"949abd1ca5a4342d9fb8c774035222e65dd1cfe4","status":"affected","lessThan":"6b0cc4e32599f59c994a60743f53fc72cb2979f4","versionType":"git"},{"version":"949abd1ca5a4342d9fb8c774035222e65dd1cfe4","status":"affected","lessThan":"6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1","versionType":"git"},{"version":"949abd1ca5a4342d9fb8c774035222e65dd1cfe4","status":"affected","lessThan":"d615210564205993e8f0e7ccb57cc2e66b7d5706","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/ad4030.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/ad4030.c"]}],"references":["https://git.kernel.org/stable/c/6b0cc4e32599f59c994a60743f53fc72cb2979f4","https://git.kernel.org/stable/c/6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1","https://git.kernel.org/stable/c/d615210564205993e8f0e7ccb57cc2e66b7d5706"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98678.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98678","state":"PUBLISHED","datePublished":"2026-10-18T15:45:35.605Z","dateUpdated":"2026-10-19T09:23:47.783Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.363Z"},"containers":{"cna":{"title":"iio: adc: ad4030: fix invalid oversampling_ratio validation","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4030: fix invalid oversampling_ratio validation\n\nIn ad4030_set_avg_frame_len(), the logarithm is calculated before input\nvalidation. Passing zero or negative values leads to an undefined result\nfrom ilog2().\n\nValidate that the input is strictly positive prior to computing its\nlogarithm."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"949abd1ca5a4342d9fb8c774035222e65dd1cfe4","status":"affected","lessThan":"6b0cc4e32599f59c994a60743f53fc72cb2979f4","versionType":"git"},{"version":"949abd1ca5a4342d9fb8c774035222e65dd1cfe4","status":"affected","lessThan":"6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1","versionType":"git"},{"version":"949abd1ca5a4342d9fb8c774035222e65dd1cfe4","status":"affected","lessThan":"d615210564205993e8f0e7ccb57cc2e66b7d5706","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/ad4030.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/adc/ad4030.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6b0cc4e32599f59c994a60743f53fc72cb2979f4"},{"url":"https://git.kernel.org/stable/c/6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1"},{"url":"https://git.kernel.org/stable/c/d615210564205993e8f0e7ccb57cc2e66b7d5706"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:23:47.783Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}