{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68294", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.380Z", "datePublished": "2026-08-10T12:02:27.423Z", "dateUpdated": "2026-08-13T22:42:56.077Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-13T22:42:56.077Z"}, "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": {"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"}, "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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/qrtr/af_qrtr.c"], "versions": [{"version": "bdabad3e363d825ddf9679dd431cca0b2c30f881", "lessThan": "4b95e1f0d6e6342c427cb341ee18a894b146b789", "status": "affected", "versionType": "git"}, {"version": "bdabad3e363d825ddf9679dd431cca0b2c30f881", "lessThan": "f488116df769bdaf89c93371350e49e12133e70f", "status": "affected", "versionType": "git"}, {"version": "bdabad3e363d825ddf9679dd431cca0b2c30f881", "lessThan": "8150c48fb978e01689f94ed80148f8a7499ae571", "status": "affected", "versionType": "git"}, {"version": "bdabad3e363d825ddf9679dd431cca0b2c30f881", "lessThan": "659b9b4f194bb56b9903cc95e786ef1d438baa7d", "status": "affected", "versionType": "git"}, {"version": "bdabad3e363d825ddf9679dd431cca0b2c30f881", "lessThan": "3b536db8fb32da9e9c62f2bb45e2e319331f0426", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/qrtr/af_qrtr.c"], "versions": [{"version": "4.7", "status": "affected"}, {"version": "0", "lessThan": "4.7", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc5", "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": "4.7", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "7.2-rc5"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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)."}], "id": "CVE-2026-68294", "lastModified": "2026-08-13T23:17:28.480", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-10T13:20:18.820", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3b536db8fb32da9e9c62f2bb45e2e319331f0426"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4b95e1f0d6e6342c427cb341ee18a894b146b789"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/659b9b4f194bb56b9903cc95e786ef1d438baa7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8150c48fb978e01689f94ed80148f8a7499ae571"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f488116df769bdaf89c93371350e49e12133e70f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: QRTR allows network namespace isolation bypass via unrestricted socket creation", "id": "2513353", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513353"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-653", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: qrtr: restrict socket creation to the initial network namespace\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.\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.\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).", "A flaw was found in the Linux kernel's QRTR (Qualcomm IPC Router) networking component. An unprivileged local attacker can create a QRTR socket in a separate network namespace. Due to improper handling of global state variables, this allows the attacker to send datagrams and control-plane messages to QRTR sockets in other network namespaces. This bypasses network namespace isolation, enabling unauthorized communication and potential information disclosure between isolated network environments."], "name": "CVE-2026-68294", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:02:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68294\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68294\nhttps://git.kernel.org/stable/c/3b536db8fb32da9e9c62f2bb45e2e319331f0426\nhttps://git.kernel.org/stable/c/4b95e1f0d6e6342c427cb341ee18a894b146b789\nhttps://git.kernel.org/stable/c/659b9b4f194bb56b9903cc95e786ef1d438baa7d\nhttps://git.kernel.org/stable/c/8150c48fb978e01689f94ed80148f8a7499ae571\nhttps://git.kernel.org/stable/c/f488116df769bdaf89c93371350e49e12133e70f"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bdabad3e363d825ddf9679dd431cca0b2c30f881,4b95e1f0d6e6342c427cb341ee18a894b146b789)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bdabad3e363d825ddf9679dd431cca0b2c30f881,f488116df769bdaf89c93371350e49e12133e70f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bdabad3e363d825ddf9679dd431cca0b2c30f881,8150c48fb978e01689f94ed80148f8a7499ae571)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bdabad3e363d825ddf9679dd431cca0b2c30f881,659b9b4f194bb56b9903cc95e786ef1d438baa7d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bdabad3e363d825ddf9679dd431cca0b2c30f881,3b536db8fb32da9e9c62f2bb45e2e319331f0426)"}}], "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": "4.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "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": "2026-08-10T15:30:05.872169+00:00", "updated": "2026-08-14T00:30:03.789350+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}