{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63936", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.022Z", "datePublished": "2026-07-19T14:55:33.942Z", "dateUpdated": "2026-07-19T14:55:33.942Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:55:33.942Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: mt6359: fix unchecked return value in mt6358_read_imp\n\nIn mt6358_read_imp(), the variable val_v is passed to regmap_read()\nbut the return value is not checked. If the read fails, val_v remains\nuninitialized and its random stack content is subsequently reported\nas a measurement result.\n\nInitialize val_v to zero to ensure a predictable value is reported\nin case of bus failure and to prevent potential stack data leakage.\nThis also satisfies static analyzers that might otherwise flag the\nvariable as used uninitialized."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/iio/adc/mt6359-auxadc.c"], "versions": [{"version": "3587914bf61df7924933530353d840378cdc4973", "lessThan": "6258bfec51e894ea97b8e69f3cde7af269b37de9", "status": "affected", "versionType": "git"}, {"version": "3587914bf61df7924933530353d840378cdc4973", "lessThan": "944082fdb0284a31c0b37a88c8a1d4404da3a6d9", "status": "affected", "versionType": "git"}, {"version": "3587914bf61df7924933530353d840378cdc4973", "lessThan": "a72f8e51d6ee66c255a8a93a4421b8a538d112a8", "status": "affected", "versionType": "git"}, {"version": "3587914bf61df7924933530353d840378cdc4973", "lessThan": "f9bbd943c34a9ad60e593a4b99ce2394e4e2381b", "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/iio/adc/mt6359-auxadc.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "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": "6.11", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6258bfec51e894ea97b8e69f3cde7af269b37de9"}, {"url": "https://git.kernel.org/stable/c/944082fdb0284a31c0b37a88c8a1d4404da3a6d9"}, {"url": "https://git.kernel.org/stable/c/a72f8e51d6ee66c255a8a93a4421b8a538d112a8"}, {"url": "https://git.kernel.org/stable/c/f9bbd943c34a9ad60e593a4b99ce2394e4e2381b"}], "title": "iio: adc: mt6359: fix unchecked return value in mt6358_read_imp", "x_generator": {"engine": "bippy-1.2.0"}}}}

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