{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31724", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.134Z", "datePublished": "2026-05-01T14:14:25.544Z", "dateUpdated": "2026-05-01T14:14:25.544Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:14:25.544Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_eem: 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\nconsole:/ # ls -l /sys/class/net/usb0\nlrwxrwxrwx ... /sys/class/net/usb0 ->\n/sys/devices/platform/.../gadget.0/net/usb0\nconsole:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0\nls: .../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 bound flag is used to indicate whether the network device is shared\nand pre-registered during the legacy driver's bind phase."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_eem.c", "drivers/usb/gadget/function/u_eem.h"], "versions": [{"version": "b29002a157940752dfed2c488b2011f63f007d71", "lessThan": "a6b8bce01a30a8c05c034bbc36c34845d65d644f", "status": "affected", "versionType": "git"}, {"version": "b29002a157940752dfed2c488b2011f63f007d71", "lessThan": "4ccdccff8febc5456aff684627f9a4c5c83b9346", "status": "affected", "versionType": "git"}, {"version": "b29002a157940752dfed2c488b2011f63f007d71", "lessThan": "14730506b9e2a09d10c963a57a72ed528482fc15", "status": "affected", "versionType": "git"}, {"version": "b29002a157940752dfed2c488b2011f63f007d71", "lessThan": "d9270c9a8118c1535409db926ac1e2545dc97b81", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/f_eem.c", "drivers/usb/gadget/function/u_eem.h"], "versions": [{"version": "3.11", "status": "affected"}, {"version": "0", "lessThan": "3.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.11", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a6b8bce01a30a8c05c034bbc36c34845d65d644f"}, {"url": "https://git.kernel.org/stable/c/4ccdccff8febc5456aff684627f9a4c5c83b9346"}, {"url": "https://git.kernel.org/stable/c/14730506b9e2a09d10c963a57a72ed528482fc15"}, {"url": "https://git.kernel.org/stable/c/d9270c9a8118c1535409db926ac1e2545dc97b81"}], "title": "usb: gadget: f_eem: Fix net_device lifecycle with device_move", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_eem: 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\nconsole:/ # ls -l /sys/class/net/usb0\nlrwxrwxrwx ... /sys/class/net/usb0 ->\n/sys/devices/platform/.../gadget.0/net/usb0\nconsole:/ # ls -l /sys/devices/platform/.../gadget.0/net/usb0\nls: .../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 bound flag is used to indicate whether the network device is shared\nand pre-registered during the legacy driver's bind phase."}], "id": "CVE-2026-31724", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:34.833", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/14730506b9e2a09d10c963a57a72ed528482fc15"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4ccdccff8febc5456aff684627f9a4c5c83b9346"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6b8bce01a30a8c05c034bbc36c34845d65d644f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d9270c9a8118c1535409db926ac1e2545dc97b81"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b29002a157940752dfed2c488b2011f63f007d71,a6b8bce01a30a8c05c034bbc36c34845d65d644f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b29002a157940752dfed2c488b2011f63f007d71,4ccdccff8febc5456aff684627f9a4c5c83b9346)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b29002a157940752dfed2c488b2011f63f007d71,14730506b9e2a09d10c963a57a72ed528482fc15)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b29002a157940752dfed2c488b2011f63f007d71,d9270c9a8118c1535409db926ac1e2545dc97b81)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,3.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.81,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-05-01T15:30:20.172644+00:00", "updated": "2026-05-01T15:30:20.172712+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}