CVE-2025-39921

{"id": "CVE-2025-39921", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-39921", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-14T17:43:20.240186Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "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": "d29f749d5202605dbb7480791e6841487d8afb77", "lessThan": "4ad071e3d57967f7ab483aed0687468bc1d9e9ce", "versionType": "git"}, {"status": "affected", "version": "13529647743d906ed3cf991f1d77727e7ff1fb6f", "lessThan": "ac8a13f35d5b8996582b3f97b924838a5c570c18", "versionType": "git"}, {"status": "affected", "version": "13529647743d906ed3cf991f1d77727e7ff1fb6f", "lessThan": "89e7353f522f5cf70cb48c01ce2dcdcb275b8022", "versionType": "git"}], "programFiles": ["drivers/spi/spi-microchip-core-qspi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.14"}, {"status": "unaffected", "version": "0", "lessThan": "6.14", "versionType": "semver"}, {"status": "unaffected", "version": "6.16.6", "versionType": "semver", "lessThanOrEqual": "6.16.*"}, {"status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/spi/spi-microchip-core-qspi.c"], "defaultStatus": "affected"}]}], "published": "2025-10-01T08:15:35.370", "references": [{"url": "https://git.kernel.org/stable/c/4ad071e3d57967f7ab483aed0687468bc1d9e9ce", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/89e7353f522f5cf70cb48c01ce2dcdcb275b8022", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ac8a13f35d5b8996582b3f97b924838a5c570c18", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: microchip-core-qspi: stop checking viability of op->max_freq in supports_op callback\n\nIn commit 13529647743d9 (\"spi: microchip-core-qspi: Support per spi-mem\noperation frequency switches\") the logic for checking the viability of\nop->max_freq in mchp_coreqspi_setup_clock() was copied into\nmchp_coreqspi_supports_op(). Unfortunately, op->max_freq is not valid\nwhen this function is called during probe but is instead zero.\nAccordingly, baud_rate_val is calculated to be INT_MAX due to division\nby zero, causing probe of the attached memory device to fail.\n\nSeemingly spi-microchip-core-qspi was the only driver that had such a\nmodification made to its supports_op callback when the per_op_freq\ncapability was added, so just remove it to restore prior functionality."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nspi: microchip-core-qspi: dejar de comprobar la viabilidad de op->max_freq en la funci\u00f3n de callback supports_op\n\nEn el commit 13529647743d9 ('spi: microchip-core-qspi: Soporte para conmutadores de frecuencia de operaci\u00f3n por spi-mem'), la l\u00f3gica para comprobar la viabilidad de op->max_freq en mchp_coreqspi_setup_clock() fue copiada a mchp_coreqspi_supports_op(). Desafortunadamente, op->max_freq no es v\u00e1lido cuando esta funci\u00f3n es llamada durante la fase de 'probe', sino que es cero. En consecuencia, baud_rate_val se calcula como INT_MAX debido a una divisi\u00f3n por cero, lo que provoca que la detecci\u00f3n ('probe') del dispositivo de memoria adjunto falle.\n\nAparentemente, spi-microchip-core-qspi fue el \u00fanico controlador al que se le hizo tal modificaci\u00f3n en su callback supports_op cuando se a\u00f1adi\u00f3 la capacidad per_op_freq, as\u00ed que simplemente se elimina para restaurar la funcionalidad anterior."}], "lastModified": "2026-10-21T13:18:16.753", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "63CA3333-31C6-4C85-87E6-97078A39D269", "versionEndExcluding": "6.16.6", "versionStartIncluding": "6.14"}, {"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"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}