{"id":"CVE-2026-63931","state":"PUBLISHED","title":"iio: chemical: scd30: fix division by zero in write_raw","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: scd30: fix division by zero in write_raw\n\nAdd a zero check for val2 before using it as a divisor when setting the\nsampling frequency. A user writing a zero fractional part to the\nsampling_frequency sysfs attribute triggers a division by zero in the\nkernel.","publishedAt":"2026-07-19T14:55:30.718Z","updatedAt":"2026-07-19T14:55:30.718Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"4748bce423a363bb8a85a624faeb8f54fe331611","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"6308b812acdcac38cbfe1af0b1524c3375f408a5","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"c7a740bf75554b051fabb17596ca6e483d6e6d90","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"e85bc501947f5ae16dd9adc01162b76d55ab7962","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"d98c2e69aab905d1b19a69ffe584efa46a9efd42","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"5e4d34092a5ebfbc3a45a180c76ecb1cdbbedd53","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"2c50c017df97bfb425038efdfb8514c7bcd08564","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"5aba4f94b225617a55fed442a70329b2ee19c0a5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/chemical/scd30_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.9","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/chemical/scd30_core.c"]}],"references":["https://git.kernel.org/stable/c/4748bce423a363bb8a85a624faeb8f54fe331611","https://git.kernel.org/stable/c/6308b812acdcac38cbfe1af0b1524c3375f408a5","https://git.kernel.org/stable/c/c7a740bf75554b051fabb17596ca6e483d6e6d90","https://git.kernel.org/stable/c/e85bc501947f5ae16dd9adc01162b76d55ab7962","https://git.kernel.org/stable/c/d98c2e69aab905d1b19a69ffe584efa46a9efd42","https://git.kernel.org/stable/c/5e4d34092a5ebfbc3a45a180c76ecb1cdbbedd53","https://git.kernel.org/stable/c/2c50c017df97bfb425038efdfb8514c7bcd08564","https://git.kernel.org/stable/c/5aba4f94b225617a55fed442a70329b2ee19c0a5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63931.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63931","state":"PUBLISHED","datePublished":"2026-07-19T14:55:30.718Z","dateUpdated":"2026-07-19T14:55:30.718Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.021Z"},"containers":{"cna":{"title":"iio: chemical: scd30: fix division by zero in write_raw","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: scd30: fix division by zero in write_raw\n\nAdd a zero check for val2 before using it as a divisor when setting the\nsampling frequency. A user writing a zero fractional part to the\nsampling_frequency sysfs attribute triggers a division by zero in the\nkernel."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"4748bce423a363bb8a85a624faeb8f54fe331611","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"6308b812acdcac38cbfe1af0b1524c3375f408a5","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"c7a740bf75554b051fabb17596ca6e483d6e6d90","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"e85bc501947f5ae16dd9adc01162b76d55ab7962","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"d98c2e69aab905d1b19a69ffe584efa46a9efd42","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"5e4d34092a5ebfbc3a45a180c76ecb1cdbbedd53","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"2c50c017df97bfb425038efdfb8514c7bcd08564","versionType":"git"},{"version":"64b3d8b1b0f5c16c19045785e4da8391ae35ec99","status":"affected","lessThan":"5aba4f94b225617a55fed442a70329b2ee19c0a5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/chemical/scd30_core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.9","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.93","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.35","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.12","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/iio/chemical/scd30_core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/4748bce423a363bb8a85a624faeb8f54fe331611"},{"url":"https://git.kernel.org/stable/c/6308b812acdcac38cbfe1af0b1524c3375f408a5"},{"url":"https://git.kernel.org/stable/c/c7a740bf75554b051fabb17596ca6e483d6e6d90"},{"url":"https://git.kernel.org/stable/c/e85bc501947f5ae16dd9adc01162b76d55ab7962"},{"url":"https://git.kernel.org/stable/c/d98c2e69aab905d1b19a69ffe584efa46a9efd42"},{"url":"https://git.kernel.org/stable/c/5e4d34092a5ebfbc3a45a180c76ecb1cdbbedd53"},{"url":"https://git.kernel.org/stable/c/2c50c017df97bfb425038efdfb8514c7bcd08564"},{"url":"https://git.kernel.org/stable/c/5aba4f94b225617a55fed442a70329b2ee19c0a5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T14:55:30.718Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.12.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"6.18.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"7.0.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.9","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}