CVE-2025-39685

{"id": "CVE-2025-39685", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.1, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "fff46207245cd9e39c05b638afaee2478e64914b", "lessThan": "bab220b0bb5af652007e278e8e8357f952b0e1ea", "versionType": "git"}, {"status": "affected", "version": "fff46207245cd9e39c05b638afaee2478e64914b", "lessThan": "5a33d07c94ba91306093e823112a7aa9727549f6", "versionType": "git"}, {"status": "affected", "version": "fff46207245cd9e39c05b638afaee2478e64914b", "lessThan": "0eb4ed2aa261dee228f1668dbfa6d87353e8162d", "versionType": "git"}, {"status": "affected", "version": "fff46207245cd9e39c05b638afaee2478e64914b", "lessThan": "a3cfcd0c78c80ca7cd80372dc28f77d01be57bf6", "versionType": "git"}, {"status": "affected", "version": "fff46207245cd9e39c05b638afaee2478e64914b", "lessThan": "d8992c9a01f81128f36acb7c5755530e21fcd059", "versionType": "git"}, {"status": "affected", "version": "fff46207245cd9e39c05b638afaee2478e64914b", "lessThan": "96cb948408b3adb69df7e451ba7da9d21f814d00", "versionType": "git"}], "programFiles": ["drivers/comedi/drivers/pcl726.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.13"}, {"status": "unaffected", "version": "0", "lessThan": "3.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.190", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.149", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.103", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.44", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.16.4", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/comedi/drivers/pcl726.c"], "defaultStatus": "affected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [{"status": "affected", "version": "0", "lessThan": "V5.0", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2025-09-05T18:15:45.160", "references": [{"url": "https://git.kernel.org/stable/c/0eb4ed2aa261dee228f1668dbfa6d87353e8162d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5a33d07c94ba91306093e823112a7aa9727549f6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/96cb948408b3adb69df7e451ba7da9d21f814d00", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a3cfcd0c78c80ca7cd80372dc28f77d01be57bf6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/bab220b0bb5af652007e278e8e8357f952b0e1ea", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d8992c9a01f81128f36acb7c5755530e21fcd059", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: pcl726: Prevent invalid irq number\n\nThe reproducer passed in an irq number(0x80008000) that was too large,\nwhich triggered the oob.\n\nAdded an interrupt number check to prevent users from passing in an irq\nnumber that was too large.\n\nIf `it->options[1]` is 31, then `1 << it->options[1]` is still invalid\nbecause it shifts a 1-bit into the sign bit (which is UB in C).\nPossible solutions include reducing the upper bound on the\n`it->options[1]` value to 30 or lower, or using `1U << it->options[1]`.\n\nThe old code would just not attempt to request the IRQ if the\n`options[1]` value were invalid. And it would still configure the\ndevice without interrupts even if the call to `request_irq` returned an\nerror. So it would be better to combine this test with the test below."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ncomedi: pcl726: Prevenir n\u00famero de irq inv\u00e1lido\n\nEl reproductor pas\u00f3 un n\u00famero de irq (0x80008000) que era demasiado grande, lo que activ\u00f3 el oob.\n\nSe a\u00f1adi\u00f3 una comprobaci\u00f3n del n\u00famero de interrupci\u00f3n para evitar que los usuarios pasen un n\u00famero de irq que sea demasiado grande.\n\nSi \u201cit->options[1]\u201d es 31, entonces \u201c1 << it->options[1]\u201d sigue siendo inv\u00e1lido porque desplaza un bit 1 al bit de signo (lo cual es UB en C). Las posibles soluciones incluyen reducir el l\u00edmite superior del valor de \u201cit->options[1]\u201d a 30 o menos, o usar \u201c1U << it->options[1]\u201d.\n\nEl c\u00f3digo antiguo simplemente no intentar\u00eda solicitar la IRQ si el valor de \u201coptions[1]\u201d fuera inv\u00e1lido. Y a\u00fan as\u00ed configurar\u00eda el dispositivo sin interrupciones incluso si la llamada a \u201crequest_irq\u201d devolviera un error. As\u00ed que ser\u00eda mejor combinar esta prueba con la prueba de abajo."}], "lastModified": "2026-10-19T21:10:00.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "78035AC4-AD57-422D-AB31-98FA2665178C", "versionEndExcluding": "5.15.190", "versionStartIncluding": "3.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FDBE8280-8983-4D2D-943D-2E6D0104E2D8", "versionEndExcluding": "6.1.149", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F2293654-7169-49B5-8D0D-EE51EF8B8E48", "versionEndExcluding": "6.6.103", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "12351F24-1133-4775-960C-F2B47E81298B", "versionEndExcluding": "6.12.44", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AFC28995-B8C3-4B68-8CB6-78E792B6629D", "versionEndExcluding": "6.16.4", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}