{"api_version":"1","generated_at":"2026-07-23T22:52:32+00:00","cve":"CVE-2026-63936","urls":{"html":"https://cve.report/CVE-2026-63936","api":"https://cve.report/api/cve/CVE-2026-63936.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63936","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63936"},"summary":{"title":"iio: adc: mt6359: fix unchecked return value in mt6358_read_imp","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:12","updated_at":"2026-07-19 16:17:12"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/944082fdb0284a31c0b37a88c8a1d4404da3a6d9","name":"https://git.kernel.org/stable/c/944082fdb0284a31c0b37a88c8a1d4404da3a6d9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a72f8e51d6ee66c255a8a93a4421b8a538d112a8","name":"https://git.kernel.org/stable/c/a72f8e51d6ee66c255a8a93a4421b8a538d112a8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f9bbd943c34a9ad60e593a4b99ce2394e4e2381b","name":"https://git.kernel.org/stable/c/f9bbd943c34a9ad60e593a4b99ce2394e4e2381b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6258bfec51e894ea97b8e69f3cde7af269b37de9","name":"https://git.kernel.org/stable/c/6258bfec51e894ea97b8e69f3cde7af269b37de9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63936","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63936","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3587914bf61df7924933530353d840378cdc4973 6258bfec51e894ea97b8e69f3cde7af269b37de9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3587914bf61df7924933530353d840378cdc4973 944082fdb0284a31c0b37a88c8a1d4404da3a6d9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3587914bf61df7924933530353d840378cdc4973 a72f8e51d6ee66c255a8a93a4421b8a538d112a8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3587914bf61df7924933530353d840378cdc4973 f9bbd943c34a9ad60e593a4b99ce2394e4e2381b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.11","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.93 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.35 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.12 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63936","cve":"CVE-2026-63936","epss":"0.002000000","percentile":"0.100200000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iio/adc/mt6359-auxadc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6258bfec51e894ea97b8e69f3cde7af269b37de9","status":"affected","version":"3587914bf61df7924933530353d840378cdc4973","versionType":"git"},{"lessThan":"944082fdb0284a31c0b37a88c8a1d4404da3a6d9","status":"affected","version":"3587914bf61df7924933530353d840378cdc4973","versionType":"git"},{"lessThan":"a72f8e51d6ee66c255a8a93a4421b8a538d112a8","status":"affected","version":"3587914bf61df7924933530353d840378cdc4973","versionType":"git"},{"lessThan":"f9bbd943c34a9ad60e593a4b99ce2394e4e2381b","status":"affected","version":"3587914bf61df7924933530353d840378cdc4973","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iio/adc/mt6359-auxadc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.11"},{"lessThan":"6.11","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.93","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.35","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.12","versionStartIncluding":"6.11","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.11","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-19T14:55:33.942Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-63936","datePublished":"2026-07-19T14:55:33.942Z","dateReserved":"2026-07-19T07:54:57.022Z","dateUpdated":"2026-07-19T14:55:33.942Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:12","lastModifiedDate":"2026-07-19 16:17:12","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63936","Ordinal":"1","Title":"iio: adc: mt6359: fix unchecked return value in mt6358_read_imp","CVE":"CVE-2026-63936","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63936","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"iio: adc: mt6359: fix unchecked return value in mt6358_read_imp"}]}}}