{"api_version":"1","generated_at":"2026-08-20T16:32:00+00:00","cve":"CVE-2026-74467","urls":{"html":"https://cve.report/CVE-2026-74467","api":"https://cve.report/api/cve/CVE-2026-74467.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74467","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74467"},"summary":{"title":"s390/qeth: Check CAP_NET_ADMIN for private ioctls","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/qeth: Check CAP_NET_ADMIN for private ioctls\n\nGate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,\nSIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OAT with CAP_NET_ADMIN\ncapable check to ensure unprivileged users cannot invoke them.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:17:51","updated_at":"2026-08-19 17:21:03"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/bd63c7879eaa87f1958f7ee027813356fcd9ff11","name":"https://git.kernel.org/stable/c/bd63c7879eaa87f1958f7ee027813356fcd9ff11","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d211028bac1bd0fff0026bfa2a8328e5b78cd0e6","name":"https://git.kernel.org/stable/c/d211028bac1bd0fff0026bfa2a8328e5b78cd0e6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4e48168825818bf4a13c743582227d15f1d30d04","name":"https://git.kernel.org/stable/c/4e48168825818bf4a13c743582227d15f1d30d04","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8fb69547924bbb3d7c900a0d7d137a7234db3f5f","name":"https://git.kernel.org/stable/c/8fb69547924bbb3d7c900a0d7d137a7234db3f5f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/93a0a846ec59a88e0c402878a15357a5ce430eb4","name":"https://git.kernel.org/stable/c/93a0a846ec59a88e0c402878a15357a5ce430eb4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b40c74262f7e1e601221cebccdbdb2b392ff9976","name":"https://git.kernel.org/stable/c/b40c74262f7e1e601221cebccdbdb2b392ff9976","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3ea5210db058347481c93849786982f874f7be2d","name":"https://git.kernel.org/stable/c/3ea5210db058347481c93849786982f874f7be2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74467","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74467","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 18787eeebd7129ecf4960876d24f349682207783 8fb69547924bbb3d7c900a0d7d137a7234db3f5f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 18787eeebd7129ecf4960876d24f349682207783 3ea5210db058347481c93849786982f874f7be2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 18787eeebd7129ecf4960876d24f349682207783 4e48168825818bf4a13c743582227d15f1d30d04 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 18787eeebd7129ecf4960876d24f349682207783 b40c74262f7e1e601221cebccdbdb2b392ff9976 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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00:13:09"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/s390/net/qeth_core_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8fb69547924bbb3d7c900a0d7d137a7234db3f5f","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"},{"lessThan":"3ea5210db058347481c93849786982f874f7be2d","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"},{"lessThan":"4e48168825818bf4a13c743582227d15f1d30d04","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"},{"lessThan":"b40c74262f7e1e601221cebccdbdb2b392ff9976","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"},{"lessThan":"bd63c7879eaa87f1958f7ee027813356fcd9ff11","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"},{"lessThan":"93a0a846ec59a88e0c402878a15357a5ce430eb4","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"},{"lessThan":"d211028bac1bd0fff0026bfa2a8328e5b78cd0e6","status":"affected","version":"18787eeebd7129ecf4960876d24f349682207783","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/s390/net/qeth_core_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.216","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"5.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/qeth: Check CAP_NET_ADMIN for private ioctls\n\nGate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,\nSIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OAT with CAP_NET_ADMIN\ncapable check to ensure unprivileged users cannot invoke them."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - Exploitation requires a local ioctl(2) on a qeth network interface via socket(SIOCDEVPRIVATE+5..+7); the path is sock_ioctl() -> dev_ioctl() -> dev_siocdevprivate() -> qeth_siocdevprivate() with no remote packet or network protocol entry point.\nAC:L - Any local user who can open an AF_INET socket and name a qeth netdev can invoke these ioctls deterministically; no races, special memory layout, or rare kernel configuration is required beyond s390 hardware with qeth present.\nPR:L - The bug is missing CAP_NET_ADMIN in qeth_siocdevprivate(); generic SIOCDEVPRIVATE handling in dev_ioctl() performs no capability check, so any unprivileged local account on an IBM Z/LinuxONE LPAR can reach these handlers without root or namespace-granted admin rights.\nUI:N - Exploitation needs only the attacker opening a socket and issuing ioctl against a qeth interface; no victim login, mount, or other interactive action is required on a shared mainframe guest.\nS:U - Impact stays within kernel/driver control of the local OSA/QDIO adapter and does not cross a VM, container, or IOMMU security boundary; this is standard local privilege and hardware-management misuse, not a guest-to-host escape.\nC:H - SIOC_QETH_QUERY_OAT and SIOC_QETH_ADP_SET_SNMP_CONTROL copy OSA Express firmware response buffers (link attributes, adapter operational data, SNMP MIB objects, card-type details) to unprivileged userspace, disclosing network hardware management information normally restricted to administrators.\nI:H - SIOC_QETH_ADP_SET_SNMP_CONTROL accepts attacker-controlled qeth_snmp_cmd request/data and forwards IPA_SETADP_SET_SNMP_CONTROL commands to OSA firmware, letting unprivileged users alter adapter SNMP/management state on production IBM Z network interfaces.\nA:H - Handlers honor attacker-chosen buffer sizes (kzalloc(udata_len) in qeth_snmp_command and vzalloc(buffer_len) in qeth_query_oat_command without upper bounds), enabling repeated large allocations for kernel memory exhaustion/OOM, and malformed IPA commands can disrupt adapter operation."}]}],"providerMetadata":{"dateUpdated":"2026-08-19T16:37:10.278Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8fb69547924bbb3d7c900a0d7d137a7234db3f5f"},{"url":"https://git.kernel.org/stable/c/3ea5210db058347481c93849786982f874f7be2d"},{"url":"https://git.kernel.org/stable/c/4e48168825818bf4a13c743582227d15f1d30d04"},{"url":"https://git.kernel.org/stable/c/b40c74262f7e1e601221cebccdbdb2b392ff9976"},{"url":"https://git.kernel.org/stable/c/bd63c7879eaa87f1958f7ee027813356fcd9ff11"},{"url":"https://git.kernel.org/stable/c/93a0a846ec59a88e0c402878a15357a5ce430eb4"},{"url":"https://git.kernel.org/stable/c/d211028bac1bd0fff0026bfa2a8328e5b78cd0e6"}],"title":"s390/qeth: Check CAP_NET_ADMIN for private ioctls","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74467","datePublished":"2026-08-15T12:27:05.635Z","dateReserved":"2026-08-15T05:44:03.902Z","dateUpdated":"2026-08-19T16:37:10.278Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:17:51","lastModifiedDate":"2026-08-19 17:21:03","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74467","Ordinal":"1","Title":"s390/qeth: Check CAP_NET_ADMIN for private ioctls","CVE":"CVE-2026-74467","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74467","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/qeth: Check CAP_NET_ADMIN for private ioctls\n\nGate the SIOCDEVPRIVATE ioctl commands SIOC_QETH_ADP_SET_SNMP_CONTROL,\nSIOC_QETH_GET_CARD_TYPE and SIOC_QETH_QUERY_OAT with CAP_NET_ADMIN\ncapable check to ensure unprivileged users cannot invoke them.","Type":"Description","Title":"s390/qeth: Check CAP_NET_ADMIN for private ioctls"}]}}}