CVE-2026-31722

{"id": "CVE-2026-31722", "cveTags": [], "metrics": {"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}]}, "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": "f466c6353819326873fa48a02c6f2d7c903240d6", "lessThan": "f374388891778c2f58facc0f61f2610a206a1876", "versionType": "git"}, {"status": "affected", "version": "f466c6353819326873fa48a02c6f2d7c903240d6", "lessThan": "9701a98f4459b52558f683b6b12a6feb6f17b255", "versionType": "git"}, {"status": "affected", "version": "f466c6353819326873fa48a02c6f2d7c903240d6", "lessThan": "1ef251aa63972fe6c0f107f5abd139b7d0f7987a", "versionType": "git"}, {"status": "affected", "version": "f466c6353819326873fa48a02c6f2d7c903240d6", "lessThan": "18ada801899f2b13ef0ceff42427ad980a41e619", "versionType": "git"}, {"status": "affected", "version": "f466c6353819326873fa48a02c6f2d7c903240d6", "lessThan": "6045ea5ca6e3fa13f8a9fafb1c535c86e124c14d", "versionType": "git"}, {"status": "affected", "version": "f466c6353819326873fa48a02c6f2d7c903240d6", "lessThan": "e367599529dc42578545a7f85fde517b35b3cda7", "versionType": "git"}], "programFiles": ["drivers/usb/gadget/function/f_rndis.c", "drivers/usb/gadget/function/u_rndis.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "3.11"}, {"status": "unaffected", "version": "0", "lessThan": "3.11", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.81", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.22", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.12", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/usb/gadget/function/f_rndis.c", "drivers/usb/gadget/function/u_rndis.h"], "defaultStatus": "affected"}]}], "published": "2026-05-01T15:16:34.617", "references": [{"url": "https://git.kernel.org/stable/c/18ada801899f2b13ef0ceff42427ad980a41e619", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1ef251aa63972fe6c0f107f5abd139b7d0f7987a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6045ea5ca6e3fa13f8a9fafb1c535c86e124c14d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9701a98f4459b52558f683b6b12a6feb6f17b255", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e367599529dc42578545a7f85fde517b35b3cda7", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f374388891778c2f58facc0f61f2610a206a1876", "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\nusb: gadget: f_rndis: Fix net_device lifecycle with device_move\n\nThe net_device is allocated during function instance creation and\nregistered during the bind phase with the gadget device as its sysfs\nparent. When the function unbinds, the parent device is destroyed, but\nthe net_device survives, resulting in dangling sysfs symlinks:\n\n console:/ # ls -l /sys/class/net/usb0\n lrwxrwxrwx ... /sys/class/net/usb0 ->\n /sys/devices/platform/.../gadget.0/net/usb0\n console:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0\n ls: .../gadget.0/net/usb0: No such file or directory\n\nUse device_move() to reparent the net_device between the gadget device\ntree and /sys/devices/virtual across bind and unbind cycles. During the\nfinal unbind, calling device_move(NULL) moves the net_device to the\nvirtual device tree before the gadget device is destroyed. On rebinding,\ndevice_move() reparents the device back under the new gadget, ensuring\nproper sysfs topology and power management ordering.\n\nTo maintain compatibility with legacy composite drivers (e.g., multi.c),\nthe borrowed_net flag is used to indicate whether the network device is\nshared and pre-registered during the legacy driver's bind phase."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nusb: gadget: f_rndis: Correcci\u00f3n del ciclo de vida de net_device con device_move\n\nEl net_device se asigna durante la creaci\u00f3n de la instancia de funci\u00f3n y se registra durante la fase de enlace con el dispositivo gadget como su padre sysfs. Cuando la funci\u00f3n se desenlaza, el dispositivo padre es destruido, pero el net_device sobrevive, lo que resulta en enlaces simb\u00f3licos sysfs colgantes:\n\n console:/ # ls -l /sys/class/net/usb0\n lrwxrwxrwx ... /sys/class/net/usb0 -> \n /sys/devices/platform/... / gadget.0/net/usb0\n console:/ # ls -l /sys/devices/platform/... / gadget.0/net/usb0\n ls: ... / gadget.0/net/usb0: No such file or directory\n\nUsar device_move() para reparentar el net_device entre el \u00e1rbol de dispositivos gadget y /sys/devices/virtual a trav\u00e9s de los ciclos de enlace y desenlace. Durante el desenlace final, llamar a device_move(NULL) mueve el net_device al \u00e1rbol de dispositivos virtuales antes de que el dispositivo gadget sea destruido. Al reenlazar, device_move() reparenta el dispositivo de nuevo bajo el nuevo gadget, asegurando una topolog\u00eda sysfs adecuada y un ordenamiento de la gesti\u00f3n de energ\u00eda.\n\nPara mantener la compatibilidad con los controladores compuestos heredados (p. ej., multi.c), se utiliza la bandera borrowed_net para indicar si el dispositivo de red es compartido y pre-registrado durante la fase de enlace del controlador heredado."}], "lastModified": "2026-11-11T21:10:00.200", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2DDEB484-A8B8-4ED2-B54C-C92F595BA13F", "versionEndExcluding": "6.12.81", "versionStartIncluding": "3.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C9DF8BCE-36D3-475D-9D21-19E4F02F9029", "versionEndExcluding": "6.18.22", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0A2B9540-02D5-41B4-B16A-82AF66FD4F36", "versionEndExcluding": "6.19.12", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}