{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64236", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.771Z", "datePublished": "2026-07-24T15:27:41.371Z", "dateUpdated": "2026-07-24T15:27:41.371Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-24T15:27:41.371Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni2c: davinci: fix division by zero on missing clock-frequency\n\nWhen the 'clock-frequency' property is missing from the device tree,\nthe driver falls back to DAVINCI_I2C_DEFAULT_BUS_FREQ. However, this\nmacro was defined in kHz (100), whereas the device tree property is\nexpected in Hz.\n\nThe probe function divided the fallback value by 1000, causing\ninteger truncation that resulted in dev->bus_freq = 0. This triggered\na deterministic division-by-zero kernel panic when calculating clock\ndividers later in the probe sequence.\n\nFix this by redefining DAVINCI_I2C_DEFAULT_BUS_FREQ in Hz (100000)\nto match the expected device tree property unit, allowing the existing\ndivision logic to work correctly for both cases."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/i2c/busses/i2c-davinci.c"], "versions": [{"version": "b04ce63859793e3439b394976b8d29e785d4d69a", "lessThan": "3f43865cb64dd7cb50efae1281a95585617b12a1", "status": "affected", "versionType": "git"}, {"version": "b04ce63859793e3439b394976b8d29e785d4d69a", "lessThan": "9b694bc0e1831cbc5c3bbfd1b156ec719128f7d9", "status": "affected", "versionType": "git"}, {"version": "b04ce63859793e3439b394976b8d29e785d4d69a", "lessThan": "030675aa54cf757769b3db65642433d626b3ed7c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/i2c/busses/i2c-davinci.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3f43865cb64dd7cb50efae1281a95585617b12a1"}, {"url": "https://git.kernel.org/stable/c/9b694bc0e1831cbc5c3bbfd1b156ec719128f7d9"}, {"url": "https://git.kernel.org/stable/c/030675aa54cf757769b3db65642433d626b3ed7c"}], "title": "i2c: davinci: fix division by zero on missing clock-frequency", "x_generator": {"engine": "bippy-1.2.0"}}}}

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