{"api_version":"1","generated_at":"2026-08-14T05:29:11+00:00","cve":"CVE-2026-68294","urls":{"html":"https://cve.report/CVE-2026-68294","api":"https://cve.report/api/cve/CVE-2026-68294.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68294","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68294"},"summary":{"title":"net: qrtr: restrict socket creation to the initial network namespace","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: restrict socket creation to the initial network namespace\n\nQRTR keeps its entire port and node state in module-global variables\nthat are not partitioned per network namespace: qrtr_local_nid is a\nsingle global node id (always 1) and qrtr_ports is a single global\nxarray. qrtr_port_lookup() and qrtr_local_enqueue() operate on that\nglobal state with no network-namespace check, and qrtr_create() places\nno restriction on the namespace a socket is created in.\n\nAs a result an unprivileged process that creates an AF_QIPCRTR socket\nin a separate network namespace, e.g. via\nunshare(CLONE_NEWUSER | CLONE_NEWNET), can send QRTR datagrams -\nincluding control-plane messages such as QRTR_TYPE_NEW_SERVER - to QRTR\nsockets owned by another namespace, and vice versa. The receiving\nsocket sees such a message as coming from node id 1, indistinguishable\nfrom a legitimate local client, breaking the isolation that network\nnamespaces are expected to provide.\n\nQRTR is a transport to global hardware endpoints (the modem and other\nremote processors) and has no per-namespace semantics; its in-kernel\nname service already creates its socket in init_net only. Confine the\nsocket family to the initial network namespace, as other\nnon-namespace-aware socket families do (see llc_ui_create() and the\nieee802154 socket code).","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:18","updated_at":"2026-08-13 23:17:28"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","data":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/3b536db8fb32da9e9c62f2bb45e2e319331f0426","name":"https://git.kernel.org/stable/c/3b536db8fb32da9e9c62f2bb45e2e319331f0426","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8150c48fb978e01689f94ed80148f8a7499ae571","name":"https://git.kernel.org/stable/c/8150c48fb978e01689f94ed80148f8a7499ae571","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/659b9b4f194bb56b9903cc95e786ef1d438baa7d","name":"https://git.kernel.org/stable/c/659b9b4f194bb56b9903cc95e786ef1d438baa7d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4b95e1f0d6e6342c427cb341ee18a894b146b789","name":"https://git.kernel.org/stable/c/4b95e1f0d6e6342c427cb341ee18a894b146b789","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f488116df769bdaf89c93371350e49e12133e70f","name":"https://git.kernel.org/stable/c/f488116df769bdaf89c93371350e49e12133e70f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68294","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68294","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bdabad3e363d825ddf9679dd431cca0b2c30f881 4b95e1f0d6e6342c427cb341ee18a894b146b789 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bdabad3e363d825ddf9679dd431cca0b2c30f881 f488116df769bdaf89c93371350e49e12133e70f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bdabad3e363d825ddf9679dd431cca0b2c30f881 8150c48fb978e01689f94ed80148f8a7499ae571 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bdabad3e363d825ddf9679dd431cca0b2c30f881 659b9b4f194bb56b9903cc95e786ef1d438baa7d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bdabad3e363d825ddf9679dd431cca0b2c30f881 3b536db8fb32da9e9c62f2bb45e2e319331f0426 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"68294","cve":"CVE-2026-68294","epss":"0.002000000","percentile":"0.100690000","score_date":"2026-08-13","updated_at":"2026-08-14 00:07:35"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/qrtr/af_qrtr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4b95e1f0d6e6342c427cb341ee18a894b146b789","status":"affected","version":"bdabad3e363d825ddf9679dd431cca0b2c30f881","versionType":"git"},{"lessThan":"f488116df769bdaf89c93371350e49e12133e70f","status":"affected","version":"bdabad3e363d825ddf9679dd431cca0b2c30f881","versionType":"git"},{"lessThan":"8150c48fb978e01689f94ed80148f8a7499ae571","status":"affected","version":"bdabad3e363d825ddf9679dd431cca0b2c30f881","versionType":"git"},{"lessThan":"659b9b4f194bb56b9903cc95e786ef1d438baa7d","status":"affected","version":"bdabad3e363d825ddf9679dd431cca0b2c30f881","versionType":"git"},{"lessThan":"3b536db8fb32da9e9c62f2bb45e2e319331f0426","status":"affected","version":"bdabad3e363d825ddf9679dd431cca0b2c30f881","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/qrtr/af_qrtr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.7"},{"lessThan":"4.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"4.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"4.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: restrict socket creation to the initial network namespace\n\nQRTR keeps its entire port and node state in module-global variables\nthat are not partitioned per network namespace: qrtr_local_nid is a\nsingle global node id (always 1) and qrtr_ports is a single global\nxarray. qrtr_port_lookup() and qrtr_local_enqueue() operate on that\nglobal state with no network-namespace check, and qrtr_create() places\nno restriction on the namespace a socket is created in.\n\nAs a result an unprivileged process that creates an AF_QIPCRTR socket\nin a separate network namespace, e.g. via\nunshare(CLONE_NEWUSER | CLONE_NEWNET), can send QRTR datagrams -\nincluding control-plane messages such as QRTR_TYPE_NEW_SERVER - to QRTR\nsockets owned by another namespace, and vice versa. The receiving\nsocket sees such a message as coming from node id 1, indistinguishable\nfrom a legitimate local client, breaking the isolation that network\nnamespaces are expected to provide.\n\nQRTR is a transport to global hardware endpoints (the modem and other\nremote processors) and has no per-namespace semantics; its in-kernel\nname service already creates its socket in init_net only. Confine the\nsocket family to the initial network namespace, as other\nnon-namespace-aware socket families do (see llc_ui_create() and the\nieee802154 socket code)."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - Exploitation requires local access to issue socket()/sendmsg() syscalls on an AF_QIPCRTR socket from within a network namespace on the target system; there is no remote packet path into qrtr_create().\nAC:L - The attack is fully deterministic: unshare(CLONE_NEWUSER|CLONE_NEWNET), create an AF_QIPCRTR socket (module autoloads via net-pf-42), and sendmsg() to node 1. No race, no memory-layout dependency, no victim state required.\nPR:L - Any unprivileged local user can create the required network namespace via unshare(CLONE_NEWUSER|CLONE_NEWNET), and a containerized process is already in one; the CAP_NET_ADMIN check at qrtr_port_assign() only gates low/control ports and is not needed for this attack.\nUI:N - The attacker performs all steps itself; no action by any other user or administrator is required to trigger the cross-namespace delivery.\nS:C - The flaw defeats the network-namespace confinement boundary itself: a process sandboxed in its own netns reaches the init_net global QRTR control plane, the in-kernel name service, and host-owned sockets, impacting resources under a different security authority than the attacker's container.\nC:H - By spoofing QRTR_TYPE_NEW_SERVER to the name service, a confined attacker registers itself as a well-known service so legitimate host clients direct their QMI traffic to it, and it can address modem/remote-processor endpoints directly, exposing sensitive telephony data it was isolated from.\nI:H - The attacker can inject arbitrary control-plane messages (NEW_SERVER, DEL_SERVER, BYE, DEL_CLIENT) that the receiver cannot distinguish from a legitimate node-1 client, corrupting the global service registry and allowing forged replies to host clients and commands to the modem.\nA:H - A single spoofed QRTR_TYPE_BYE makes ctrl_cmd_bye() delete every server registered on the local node and broadcast their removal, and the QRTR_NS_MAX_SERVERS/MAX_LOOKUPS limits can be exhausted, causing complete and repeatable loss of QRTR/modem IPC service for the whole system."}]}],"providerMetadata":{"dateUpdated":"2026-08-13T22:42:56.077Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4b95e1f0d6e6342c427cb341ee18a894b146b789"},{"url":"https://git.kernel.org/stable/c/f488116df769bdaf89c93371350e49e12133e70f"},{"url":"https://git.kernel.org/stable/c/8150c48fb978e01689f94ed80148f8a7499ae571"},{"url":"https://git.kernel.org/stable/c/659b9b4f194bb56b9903cc95e786ef1d438baa7d"},{"url":"https://git.kernel.org/stable/c/3b536db8fb32da9e9c62f2bb45e2e319331f0426"}],"title":"net: qrtr: restrict socket creation to the initial network namespace","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68294","datePublished":"2026-08-10T12:02:27.423Z","dateReserved":"2026-07-30T09:28:09.380Z","dateUpdated":"2026-08-13T22:42:56.077Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:18","lastModifiedDate":"2026-08-13 23:17:28","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:C/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2,"impactScore":6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68294","Ordinal":"1","Title":"net: qrtr: restrict socket creation to the initial network names","CVE":"CVE-2026-68294","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68294","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: restrict socket creation to the initial network namespace\n\nQRTR keeps its entire port and node state in module-global variables\nthat are not partitioned per network namespace: qrtr_local_nid is a\nsingle global node id (always 1) and qrtr_ports is a single global\nxarray. qrtr_port_lookup() and qrtr_local_enqueue() operate on that\nglobal state with no network-namespace check, and qrtr_create() places\nno restriction on the namespace a socket is created in.\n\nAs a result an unprivileged process that creates an AF_QIPCRTR socket\nin a separate network namespace, e.g. via\nunshare(CLONE_NEWUSER | CLONE_NEWNET), can send QRTR datagrams -\nincluding control-plane messages such as QRTR_TYPE_NEW_SERVER - to QRTR\nsockets owned by another namespace, and vice versa. The receiving\nsocket sees such a message as coming from node id 1, indistinguishable\nfrom a legitimate local client, breaking the isolation that network\nnamespaces are expected to provide.\n\nQRTR is a transport to global hardware endpoints (the modem and other\nremote processors) and has no per-namespace semantics; its in-kernel\nname service already creates its socket in init_net only. Confine the\nsocket family to the initial network namespace, as other\nnon-namespace-aware socket families do (see llc_ui_create() and the\nieee802154 socket code).","Type":"Description","Title":"net: qrtr: restrict socket creation to the initial network names"}]}}}