CVE-2025-38530

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Fix the test by\nrequiring `it->options[1]` to be within bounds before proceeding with\nthe original test. Valid `it->options[1]` values that select the IRQ\nwill be in the range [1,15]. The value 0 explicitly disables the use of\ninterrupts."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/comedi/drivers/pcl812.c"], "versions": [{"version": "fcdb427bc7cf5e9e5d7280cf09c08dec49b49432", "lessThan": "374d9b3eb4b08407997ef1fce96119d31e0c0bc4", "status": "affected", "versionType": "git"}, {"version": "fcdb427bc7cf5e9e5d7280cf09c08dec49b49432", "lessThan": "0489c30d080f07cc7f09d04de723d8c2ccdb61ef", "status": "affected", "versionType": "git"}, {"version": "fcdb427bc7cf5e9e5d7280cf09c08dec49b49432", "lessThan": "29ef03e5b84431171d6b77b822985b54bc44b793", "status": "affected", "versionType": "git"}, {"version": "fcdb427bc7cf5e9e5d7280cf09c08dec49b49432", "lessThan": "5bfa301e1e59a9b1a7b62a800b54852337c97416", "status": "affected", "versionType": "git"}, {"version": "fcdb427bc7cf5e9e5d7280cf09c08dec49b49432", "lessThan": 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Fix the test by\nrequiring `it->options[1]` to be within bounds before proceeding with\nthe original test. Valid `it->options[1]` values that select the IRQ\nwill be in the range [1,15]. The value 0 explicitly disables the use of\ninterrupts."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: pcl812: Corregir desplazamiento de bits fuera de los l\u00edmites Al comprobar un n\u00famero de IRQ compatible, se utiliza la siguiente prueba: if ((1 &lt;&lt; it-&gt;options[1]) &amp; board-&gt;irq_bits) { Sin embargo, `it-&gt;options[i]` es un valor `int` no comprobado del espacio de usuario, por lo que la cantidad de desplazamiento podr\u00eda ser negativa o estar fuera de los l\u00edmites. Corrija la prueba exigiendo que `it-&gt;options[1]` est\u00e9 dentro de los l\u00edmites antes de continuar con la prueba original. Los valores v\u00e1lidos de `it-&gt;options[1]` que seleccionan la IRQ estar\u00e1n en el rango [1,15]. El valor 0 deshabilita expl\u00edcitamente el uso de interrupciones."}], "id": "CVE-2025-38530", "lastModified": "2026-06-17T09:17:03.200", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-08-16T12:15:28.570", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0489c30d080f07cc7f09d04de723d8c2ccdb61ef"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/16c173abee315953fd17a279352fec4a1faee862"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/29ef03e5b84431171d6b77b822985b54bc44b793"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/374d9b3eb4b08407997ef1fce96119d31e0c0bc4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5bfa301e1e59a9b1a7b62a800b54852337c97416"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e470d8efd10725b189ca8951973a8425932398a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a27e27eee313fe1c450b6af1e80e64412546cab4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b14b076ce593f72585412fc7fd3747e03a5e3632"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: comedi: pcl812: Fix bit shift out of bounds", "id": "2388926", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2388926"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncomedi: pcl812: Fix bit shift out of bounds\nWhen checking for a supported IRQ number, the following test is used:\nif ((1 << it->options[1]) & board->irq_bits) {\nHowever, `it->options[i]` is an unchecked `int` value from userspace, so\nthe shift amount could be negative or out of bounds. Fix the test by\nrequiring `it->options[1]` to be within bounds before proceeding with\nthe original test. Valid `it->options[1]` values that select the IRQ\nwill be in the range [1,15]. The value 0 explicitly disables the use of\ninterrupts."], "name": "CVE-2025-38530", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-08-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38530\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38530\nhttps://lore.kernel.org/linux-cve-announce/2025081655-CVE-2025-38530-1e2d@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-18T20:50:12.910513+00:00", "updated": "2025-08-18T20:50:12.910580+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}