CVE-2025-38149

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/phy/phy_device.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "363fdf2777423ad346d781f09548cca14877f729", "status": "affected", "version": "bc66fa87d4fda9053a8145e5718fc278c2b88253", "versionType": "git"}, {"lessThan": "ddc654e89ace723b78c34911c65243accbc9b75c", "status": "affected", "version": "bc66fa87d4fda9053a8145e5718fc278c2b88253", "versionType": "git"}, {"lessThan": "034bc4a2a72dea2cfcaf24c6bae03c38ad5a0b87", "status": "affected", "version": "bc66fa87d4fda9053a8145e5718fc278c2b88253", "versionType": "git"}, {"lessThan": "0795b05a59b1371b18ffbf09d385296b12e9f5d5", "status": "affected", "version": "bc66fa87d4fda9053a8145e5718fc278c2b88253", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/phy/phy_device.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.2"}, {"lessThan": "6.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.94", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.34", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "304E3F01-7D7A-4908-994E-7F95C5C00B06", "versionEndExcluding": "6.6.94", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4FFA54AA-CDFE-4591-BD07-72813D0948F4", "versionEndExcluding": "6.12.34", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0541C761-BD5E-4C1A-8432-83B375D7EB92", "versionEndExcluding": "6.15.3", "versionStartIncluding": "6.13", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phy: clear phydev->devlink when the link is deleted\n\nThere is a potential crash issue when disabling and re-enabling the\nnetwork port. When disabling the network port, phy_detach() calls\ndevice_link_del() to remove the device link, but it does not clear\nphydev->devlink, so phydev->devlink is not a NULL pointer. Then the\nnetwork port is re-enabled, but if phy_attach_direct() fails before\ncalling device_link_add(), the code jumps to the \"error\" label and\ncalls phy_detach(). Since phydev->devlink retains the old value from\nthe previous attach/detach cycle, device_link_del() uses the old value,\nwhich accesses a NULL pointer and causes a crash. The simplified crash\nlog is as follows.\n\n[ 24.702421] Call trace:\n[ 24.704856] device_link_put_kref+0x20/0x120\n[ 24.709124] device_link_del+0x30/0x48\n[ 24.712864] phy_detach+0x24/0x168\n[ 24.716261] phy_attach_direct+0x168/0x3a4\n[ 24.720352] phylink_fwnode_phy_connect+0xc8/0x14c\n[ 24.725140] phylink_of_phy_connect+0x1c/0x34\n\nTherefore, phydev->devlink needs to be cleared when the device link is\ndeleted."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: phy: borra phydev->devlink al eliminar el enlace. Existe un posible fallo al deshabilitar y volver a habilitar el puerto de red. Al deshabilitar el puerto de red, phy_detach() llama a device_link_del() para eliminar el enlace del dispositivo, pero no borra phydev->devlink, por lo que phydev->devlink no es un puntero nulo. A continuaci\u00f3n, se vuelve a habilitar el puerto de red, pero si phy_attach_direct() falla antes de llamar a device_link_add(), el c\u00f3digo salta a la etiqueta \"error\" y llama a phy_detach(). Dado que phydev->devlink conserva el valor anterior del ciclo de conexi\u00f3n/desconexi\u00f3n anterior, device_link_del() utiliza el valor anterior, que accede a un puntero nulo y provoca un fallo. El registro de fallos simplificado es el siguiente. [ 24.702421] Rastreo de llamadas: [ 24.704856] device_link_put_kref+0x20/0x120 [ 24.709124] device_link_del+0x30/0x48 [ 24.712864] phy_detach+0x24/0x168 [ 24.716261] phy_attach_direct+0x168/0x3a4 [ 24.720352] phylink_fwnode_phy_connect+0xc8/0x14c [ 24.725140] phylink_of_phy_connect+0x1c/0x34 Por lo tanto, phydev->devlink debe borrarse cuando se elimina el enlace del dispositivo."}], "id": "CVE-2025-38149", "lastModified": "2026-11-05T21:18:11.730", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-38149", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:50:35.495712Z", "version": "2.0.3"}}]}, "published": "2025-07-03T09:15:29.830", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/034bc4a2a72dea2cfcaf24c6bae03c38ad5a0b87"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0795b05a59b1371b18ffbf09d385296b12e9f5d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/363fdf2777423ad346d781f09548cca14877f729"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ddc654e89ace723b78c34911c65243accbc9b75c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net: phy: clear phydev->devlink when the link is deleted", "id": "2376090", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2376090"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: phy: clear phydev->devlink when the link is deleted\nThere is a potential crash issue when disabling and re-enabling the\nnetwork port. When disabling the network port, phy_detach() calls\ndevice_link_del() to remove the device link, but it does not clear\nphydev->devlink, so phydev->devlink is not a NULL pointer. Then the\nnetwork port is re-enabled, but if phy_attach_direct() fails before\ncalling device_link_add(), the code jumps to the \"error\" label and\ncalls phy_detach(). Since phydev->devlink retains the old value from\nthe previous attach/detach cycle, device_link_del() uses the old value,\nwhich accesses a NULL pointer and causes a crash. The simplified crash\nlog is as follows.\n[ 24.702421] Call trace:\n[ 24.704856] device_link_put_kref+0x20/0x120\n[ 24.709124] device_link_del+0x30/0x48\n[ 24.712864] phy_detach+0x24/0x168\n[ 24.716261] phy_attach_direct+0x168/0x3a4\n[ 24.720352] phylink_fwnode_phy_connect+0xc8/0x14c\n[ 24.725140] phylink_of_phy_connect+0x1c/0x34\nTherefore, phydev->devlink needs to be cleared when the device link is\ndeleted."], "name": "CVE-2025-38149", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-07-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38149\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38149\nhttps://lore.kernel.org/linux-cve-announce/2025070336-CVE-2025-38149-0dad@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-06T22:16:22.988571+00:00", "updated": "2025-07-06T22:16:22.988626+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}