{"api_version":"1","generated_at":"2026-08-02T01:11:15+00:00","cve":"CVE-2026-64500","urls":{"html":"https://cve.report/CVE-2026-64500","api":"https://cve.report/api/cve/CVE-2026-64500.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64500","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64500"},"summary":{"title":"iio: adc: lpc32xx: Initialize completion before requesting IRQ","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: lpc32xx: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"lpc32xx_adc_probe() in drivers/iio/adc/lpc32xx_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst->completion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in lpc32xx_adc_probe():\n\n    iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); /* st kzalloc-zeroed */\n    ...\n    retval = devm_request_irq(&pdev->dev, irq, lpc32xx_adc_isr, 0,\n                              LPC32XXAD_NAME, st);           /* register handler */\n    ...\n    init_completion(&st->completion);                       /* initialize completion */\n\nlpc32xx_adc_isr() calls complete():\n\n    complete(&st->completion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:35","updated_at":"2026-07-25 10:17:35"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/48eccc6caed4e62c0f199ab3a3772fa969cd3b2d","name":"https://git.kernel.org/stable/c/48eccc6caed4e62c0f199ab3a3772fa969cd3b2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1ddf7b6ffb8ebb22b92a184a9eaa76277ef0c7cd","name":"https://git.kernel.org/stable/c/1ddf7b6ffb8ebb22b92a184a9eaa76277ef0c7cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7090c0d29708ee305022d0ea7b37612b33242fa2","name":"https://git.kernel.org/stable/c/7090c0d29708ee305022d0ea7b37612b33242fa2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2f18c5551aa97ca7f39dbb151c67c9053ccadc17","name":"https://git.kernel.org/stable/c/2f18c5551aa97ca7f39dbb151c67c9053ccadc17","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e561b35633f450ee607e87a6401d97f156a0cd54","name":"https://git.kernel.org/stable/c/e561b35633f450ee607e87a6401d97f156a0cd54","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e2e8b8cdfd37ae7c7a8a5c96c59e98a768731c4","name":"https://git.kernel.org/stable/c/9e2e8b8cdfd37ae7c7a8a5c96c59e98a768731c4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0e33587967b356519aa6f220b5b43c6976320397","name":"https://git.kernel.org/stable/c/0e33587967b356519aa6f220b5b43c6976320397","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/820c4f15353efe9a9429ae86ccceeaf4e0e4e585","name":"https://git.kernel.org/stable/c/820c4f15353efe9a9429ae86ccceeaf4e0e4e585","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64500","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64500","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 7090c0d29708ee305022d0ea7b37612b33242fa2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 0e33587967b356519aa6f220b5b43c6976320397 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 1ddf7b6ffb8ebb22b92a184a9eaa76277ef0c7cd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 820c4f15353efe9a9429ae86ccceeaf4e0e4e585 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 48eccc6caed4e62c0f199ab3a3772fa969cd3b2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 9e2e8b8cdfd37ae7c7a8a5c96c59e98a768731c4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a 2f18c5551aa97ca7f39dbb151c67c9053ccadc17 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7901b2a1453e48c9defff2c97c67d3089bf4df7a e561b35633f450ee607e87a6401d97f156a0cd54 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64500","cve":"CVE-2026-64500","epss":"0.001650000","percentile":"0.061440000","score_date":"2026-07-28","updated_at":"2026-07-29 00:05:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/iio/adc/lpc32xx_adc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7090c0d29708ee305022d0ea7b37612b33242fa2","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"0e33587967b356519aa6f220b5b43c6976320397","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"1ddf7b6ffb8ebb22b92a184a9eaa76277ef0c7cd","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"820c4f15353efe9a9429ae86ccceeaf4e0e4e585","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"48eccc6caed4e62c0f199ab3a3772fa969cd3b2d","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"9e2e8b8cdfd37ae7c7a8a5c96c59e98a768731c4","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"2f18c5551aa97ca7f39dbb151c67c9053ccadc17","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"},{"lessThan":"e561b35633f450ee607e87a6401d97f156a0cd54","status":"affected","version":"7901b2a1453e48c9defff2c97c67d3089bf4df7a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/iio/adc/lpc32xx_adc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc3","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: lpc32xx: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"lpc32xx_adc_probe() in drivers/iio/adc/lpc32xx_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst->completion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in lpc32xx_adc_probe():\n\n    iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); /* st kzalloc-zeroed */\n    ...\n    retval = devm_request_irq(&pdev->dev, irq, lpc32xx_adc_isr, 0,\n                              LPC32XXAD_NAME, st);           /* register handler */\n    ...\n    init_completion(&st->completion);                       /* initialize completion */\n\nlpc32xx_adc_isr() calls complete():\n\n    complete(&st->completion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq()."}],"providerMetadata":{"dateUpdated":"2026-07-25T08:51:56.053Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7090c0d29708ee305022d0ea7b37612b33242fa2"},{"url":"https://git.kernel.org/stable/c/0e33587967b356519aa6f220b5b43c6976320397"},{"url":"https://git.kernel.org/stable/c/1ddf7b6ffb8ebb22b92a184a9eaa76277ef0c7cd"},{"url":"https://git.kernel.org/stable/c/820c4f15353efe9a9429ae86ccceeaf4e0e4e585"},{"url":"https://git.kernel.org/stable/c/48eccc6caed4e62c0f199ab3a3772fa969cd3b2d"},{"url":"https://git.kernel.org/stable/c/9e2e8b8cdfd37ae7c7a8a5c96c59e98a768731c4"},{"url":"https://git.kernel.org/stable/c/2f18c5551aa97ca7f39dbb151c67c9053ccadc17"},{"url":"https://git.kernel.org/stable/c/e561b35633f450ee607e87a6401d97f156a0cd54"}],"title":"iio: adc: lpc32xx: Initialize completion before requesting IRQ","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64500","datePublished":"2026-07-25T08:51:56.053Z","dateReserved":"2026-07-19T15:36:31.793Z","dateUpdated":"2026-07-25T08:51:56.053Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:35","lastModifiedDate":"2026-07-25 10:17:35","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64500","Ordinal":"1","Title":"iio: adc: lpc32xx: Initialize completion before requesting IRQ","CVE":"CVE-2026-64500","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64500","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: lpc32xx: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"lpc32xx_adc_probe() in drivers/iio/adc/lpc32xx_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst->completion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in lpc32xx_adc_probe():\n\n    iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); /* st kzalloc-zeroed */\n    ...\n    retval = devm_request_irq(&pdev->dev, irq, lpc32xx_adc_isr, 0,\n                              LPC32XXAD_NAME, st);           /* register handler */\n    ...\n    init_completion(&st->completion);                       /* initialize completion */\n\nlpc32xx_adc_isr() calls complete():\n\n    complete(&st->completion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq().","Type":"Description","Title":"iio: adc: lpc32xx: Initialize completion before requesting IRQ"}]}}}