CVE-2026-31727

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31727", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.134Z", "datePublished": "2026-05-01T14:14:27.552Z", "dateUpdated": "2026-06-19T11:58:05.053Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-19T11:58:05.053Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo\n\nCommit ec35c1969650 (\"usb: gadget: f_ncm: Fix net_device lifecycle with\ndevice_move\") reparents the gadget device to /sys/devices/virtual during\nunbind, clearing the gadget pointer. If the userspace tool queries on\nthe surviving interface during this detached window, this leads to a\nNULL pointer dereference.\n\nUnable to handle kernel NULL pointer dereference\nCall trace:\n eth_get_drvinfo+0x50/0x90\n ethtool_get_drvinfo+0x5c/0x1f0\n __dev_ethtool+0xaec/0x1fe0\n dev_ethtool+0x134/0x2e0\n dev_ioctl+0x338/0x560\n\nAdd a NULL check for dev->gadget in eth_get_drvinfo(). When detached,\nskip copying the fw_version and bus_info strings, which is natively\nhandled by ethtool_get_drvinfo for empty strings."}], "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/u_ether.c"], "versions": [{"version": "7c97366f5dac5255e60a317ffe3a5b18f3745547", "lessThan": "f9f987472f4b8ab177be2b6492a59278ed969479", "status": "affected", "versionType": "git"}, {"version": "36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4", "lessThan": "7fce959e9be3bf63bb0fdf4b05f9cc42cb289fe2", "status": "affected", "versionType": "git"}, {"version": "93f116c3393a22acab96ad1bef12b2572eb80ca4", "lessThan": "0326429e8ba99892e1d1e115dc8e88e1a3b64e24", "status": "affected", "versionType": "git"}, {"version": "e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d", "lessThan": "a36e5e800b9c93e3e1ffa42f34d38b36775dbcee", "status": "affected", "versionType": "git"}, {"version": "85acaba2f42b557499bab3608307f17bf13beb69", "lessThan": "7de4d46be40738c7e48e64b5cc0a34aa1e047b0a", "status": "affected", "versionType": "git"}, {"version": "ec35c1969650e7cb6c8a91020e568ed46e3551b0", "lessThan": "e002e92e88e12457373ed096b18716d97e7bbb20", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/usb/gadget/function/u_ether.c"], "versions": [{"version": "6.12.78", "lessThan": "6.12.81", "status": "affected", "versionType": "semver"}, {"version": "6.18.19", "lessThan": "6.18.22", "status": "affected", "versionType": "semver"}, {"version": "6.19.9", "lessThan": "6.19.12", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.78", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.19", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.9", "versionEndExcluding": "6.19.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f9f987472f4b8ab177be2b6492a59278ed969479"}, {"url": "https://git.kernel.org/stable/c/7fce959e9be3bf63bb0fdf4b05f9cc42cb289fe2"}, {"url": "https://git.kernel.org/stable/c/0326429e8ba99892e1d1e115dc8e88e1a3b64e24"}, {"url": "https://git.kernel.org/stable/c/a36e5e800b9c93e3e1ffa42f34d38b36775dbcee"}, {"url": "https://git.kernel.org/stable/c/7de4d46be40738c7e48e64b5cc0a34aa1e047b0a"}, {"url": "https://git.kernel.org/stable/c/e002e92e88e12457373ed096b18716d97e7bbb20"}], "title": "usb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/u_ether.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f9f987472f4b8ab177be2b6492a59278ed969479", "status": "affected", "version": "7c97366f5dac5255e60a317ffe3a5b18f3745547", "versionType": "git"}, {"lessThan": "7fce959e9be3bf63bb0fdf4b05f9cc42cb289fe2", "status": "affected", "version": "36c41e9724c9a7a7cda37f5a4e9d94f25c8031c4", "versionType": "git"}, {"lessThan": "0326429e8ba99892e1d1e115dc8e88e1a3b64e24", "status": "affected", "version": "93f116c3393a22acab96ad1bef12b2572eb80ca4", "versionType": "git"}, {"lessThan": "a36e5e800b9c93e3e1ffa42f34d38b36775dbcee", "status": "affected", "version": "e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d", "versionType": "git"}, {"lessThan": "7de4d46be40738c7e48e64b5cc0a34aa1e047b0a", "status": "affected", "version": "85acaba2f42b557499bab3608307f17bf13beb69", "versionType": "git"}, {"lessThan": "e002e92e88e12457373ed096b18716d97e7bbb20", "status": "affected", "version": "ec35c1969650e7cb6c8a91020e568ed46e3551b0", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/usb/gadget/function/u_ether.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6.12.81", "status": "affected", "version": "6.12.78", "versionType": "semver"}, {"lessThan": "6.18.22", "status": "affected", "version": "6.18.19", "versionType": "semver"}, {"lessThan": "6.19.12", "status": "affected", "version": "6.19.9", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3567D859-58AE-4093-AF8D-4FAF8C4F6486", "versionEndExcluding": "6.12.81", "versionStartIncluding": "6.12.78", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFB8FEEE-92ED-46DD-897B-15F8534FE743", "versionEndExcluding": "6.18.22", "versionStartIncluding": "6.18.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F44F6C4F-96C5-4F3A-8DA1-9B8F6AB14C51", "versionEndExcluding": "6.19.12", "versionStartIncluding": "6.19.9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo\n\nCommit ec35c1969650 (\"usb: gadget: f_ncm: Fix net_device lifecycle with\ndevice_move\") reparents the gadget device to /sys/devices/virtual during\nunbind, clearing the gadget pointer. If the userspace tool queries on\nthe surviving interface during this detached window, this leads to a\nNULL pointer dereference.\n\nUnable to handle kernel NULL pointer dereference\nCall trace:\n eth_get_drvinfo+0x50/0x90\n ethtool_get_drvinfo+0x5c/0x1f0\n __dev_ethtool+0xaec/0x1fe0\n dev_ethtool+0x134/0x2e0\n dev_ioctl+0x338/0x560\n\nAdd a NULL check for dev->gadget in eth_get_drvinfo(). When detached,\nskip copying the fw_version and bus_info strings, which is natively\nhandled by ethtool_get_drvinfo for empty strings."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nusb: gadget: u_ether: Corrige desreferencia de puntero NULL en eth_get_drvinfo\n\nEl commit ec35c1969650 (\u2019usb: gadget: f_ncm: Corrige el ciclo de vida de net_device con device_move\u2019) reparenta el dispositivo gadget a /sys/devices/virtual durante la desvinculaci\u00f3n, borrando el puntero gadget. Si la herramienta de espacio de usuario consulta en la interfaz superviviente durante esta ventana de desconexi\u00f3n, esto lleva a una desreferencia de puntero NULL.\n\nNo se puede manejar la desreferencia de puntero NULL del kernel\nRastreo de llamadas:\n eth_get_drvinfo+0x50/0x90\n ethtool_get_drvinfo+0x5c/0x1f0\n __dev_ethtool+0xaec/0x 1fe0\n dev_ethtool+0x134/0x2e0\n dev_ioctl+0x338/0x560\n\nA\u00f1adir una comprobaci\u00f3n de NULL para dev -> gadget en eth_get_drvinfo(). Cuando est\u00e1 desconectado, omitir la copia de las cadenas fw_version y bus_info, lo cual es manejado de forma nativa por ethtool_get_drvinfo para cadenas vac\u00edas."}], "id": "CVE-2026-31727", "lastModified": "2026-11-11T21:10:00.200", "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"}]}, "published": "2026-05-01T15:16:35.210", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/0326429e8ba99892e1d1e115dc8e88e1a3b64e24"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7de4d46be40738c7e48e64b5cc0a34aa1e047b0a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7fce959e9be3bf63bb0fdf4b05f9cc42cb289fe2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a36e5e800b9c93e3e1ffa42f34d38b36775dbcee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e002e92e88e12457373ed096b18716d97e7bbb20"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f9f987472f4b8ab177be2b6492a59278ed969479"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: usb: gadget: u_ether: Fix NULL pointer deref in eth_get_drvinfo", "id": "2464468", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464468"}, "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"}, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel's USB gadget subsystem, specifically within the `u_ether` module. A local user can exploit this vulnerability by using a userspace tool to query a USB gadget interface during a specific detached state. This action can trigger a NULL pointer dereference, potentially causing the system to crash and leading to a denial of service (DoS)."], "name": "CVE-2026-31727", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "2026-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31727\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31727\nhttps://lore.kernel.org/linux-cve-announce/2026050135-CVE-2026-31727-0070@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[93f116c3393a22acab96ad1bef12b2572eb80ca4,0326429e8ba99892e1d1e115dc8e88e1a3b64e24)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e584cb58a2ea7ff4d3a4bc43d5ca512ed3ecb77d,a36e5e800b9c93e3e1ffa42f34d38b36775dbcee)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85acaba2f42b557499bab3608307f17bf13beb69,7de4d46be40738c7e48e64b5cc0a34aa1e047b0a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ec35c1969650e7cb6c8a91020e568ed46e3551b0,e002e92e88e12457373ed096b18716d97e7bbb20)"}}], "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": "semver", "value": "[6.12.78,6.12.81)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.19,6.18.22)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.19.9,6.19.12)"}}], "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": "2026-05-01T15:45:15.880733+00:00", "updated": "2026-05-02T07:45:37.785037+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476"]}