CVE-2026-46084

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This leaves stale steering configuration that still points to\nthe destroyed RX objects.\n\nIf traffic continues to arrive (e.g. peer VM is still transmitting) and\nthe VF interface is subsequently brought up (mana_open), the firmware\nmay deliver completions using stale CQ IDs from the old RX objects.\nThese CQ IDs can be reused by the ethernet driver for new TX CQs,\ncausing RX completions to land on TX CQs:\n\n WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false)\n WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails)\n\nFix this by disabling vPort RX steering before destroying RX WQ objects.\nNote that mana_fence_rqs() cannot be used here because the fence\ncompletion is delivered on the CQ, which is polled by user-mode (e.g.\nDPDK) and not visible to the kernel driver.\n\nRefactor the disable logic into a shared mana_disable_vport_rx() in\nmana_en, exported for use by mana_ib, replacing the duplicate code.\nThe ethernet driver's mana_dealloc_queues() is also updated to call\nthis common function."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/mana/qp.c", "drivers/net/ethernet/microsoft/mana/mana_en.c", "include/net/mana/mana.h"], "versions": [{"version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06", "lessThan": "6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f", "status": "affected", "versionType": "git"}, {"version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06", "lessThan": "f1ccc4d500a0b87a5599343fc2f798048836e184", "status": "affected", "versionType": "git"}, {"version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06", "lessThan": "8ba804869382ce307f2a15f5f6f2adfd791f41dc", "status": "affected", "versionType": "git"}, {"version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06", "lessThan": "3be5ed233de03b00ae868cfc06e95331d8d9007c", "status": "affected", "versionType": "git"}, {"version": "0266a177631d4c6b963b5b12dd986a8c5abdbf06", "lessThan": "dbeb256e8dd87233d891b170c0b32a6466467036", "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/infiniband/hw/mana/qp.c", "drivers/net/ethernet/microsoft/mana/mana_en.c", "include/net/mana/mana.h"], "versions": [{"version": "6.2", "status": "affected"}, {"version": "0", "lessThan": "6.2", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.2", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f"}, {"url": "https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184"}, {"url": "https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc"}, {"url": "https://git.kernel.org/stable/c/3be5ed233de03b00ae868cfc06e95331d8d9007c"}, {"url": "https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036"}], "title": "RDMA/mana_ib: Disable RX steering on RSS QP destroy", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46084", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:07:47.230640Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:13:36.728Z"}}]}}

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This leaves stale steering configuration that still points to\nthe destroyed RX objects.\n\nIf traffic continues to arrive (e.g. peer VM is still transmitting) and\nthe VF interface is subsequently brought up (mana_open), the firmware\nmay deliver completions using stale CQ IDs from the old RX objects.\nThese CQ IDs can be reused by the ethernet driver for new TX CQs,\ncausing RX completions to land on TX CQs:\n\n WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false)\n WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails)\n\nFix this by disabling vPort RX steering before destroying RX WQ objects.\nNote that mana_fence_rqs() cannot be used here because the fence\ncompletion is delivered on the CQ, which is polled by user-mode (e.g.\nDPDK) and not visible to the kernel driver.\n\nRefactor the disable logic into a shared mana_disable_vport_rx() in\nmana_en, exported for use by mana_ib, replacing the duplicate code.\nThe ethernet driver's mana_dealloc_queues() is also updated to call\nthis common function."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.140", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.86", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.27", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.4", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "6.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-14T17:53:09.762Z"}}}, "cveMetadata": {"cveId": "CVE-2026-46084", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:13:36.728Z", "dateReserved": "2026-05-13T15:03:33.096Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-05-27T12:58:25.435Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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This leaves stale steering configuration that still points to\nthe destroyed RX objects.\n\nIf traffic continues to arrive (e.g. peer VM is still transmitting) and\nthe VF interface is subsequently brought up (mana_open), the firmware\nmay deliver completions using stale CQ IDs from the old RX objects.\nThese CQ IDs can be reused by the ethernet driver for new TX CQs,\ncausing RX completions to land on TX CQs:\n\n WARNING: mana_poll_tx_cq+0x1b8/0x220 [mana] (is_sq == false)\n WARNING: mana_gd_process_eq_events+0x209/0x290 (cq_table lookup fails)\n\nFix this by disabling vPort RX steering before destroying RX WQ objects.\nNote that mana_fence_rqs() cannot be used here because the fence\ncompletion is delivered on the CQ, which is polled by user-mode (e.g.\nDPDK) and not visible to the kernel driver.\n\nRefactor the disable logic into a shared mana_disable_vport_rx() in\nmana_en, exported for use by mana_ib, replacing the duplicate code.\nThe ethernet driver's mana_dealloc_queues() is also updated to call\nthis common function."}], "id": "CVE-2026-46084", "lastModified": "2026-11-06T17:17:36.050", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46084", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:07:47.230640Z", "version": "2.0.3"}}]}, "published": "2026-05-27T14:17:29.833", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3be5ed233de03b00ae868cfc06e95331d8d9007c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8ba804869382ce307f2a15f5f6f2adfd791f41dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/dbeb256e8dd87233d891b170c0b32a6466467036"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1ccc4d500a0b87a5599343fc2f798048836e184"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: RDMA/mana_ib: Disable RX steering on RSS QP destroy", "id": "2481920", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481920"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-459", "details": ["A flaw was found in the Linux kernel's RDMA (Remote Direct Memory Access) mana_ib driver. When a Receive Side Scaling Queue Pair (RSS QP) is destroyed, the vPort RX (receive) steering in the firmware is not properly disabled, leaving stale steering configurations. This can lead to receive completions being misdirected to transmit completion queues if network traffic continues and the virtual function (VF) interface is reactivated. The consequence is system instability and a denial of service."], "name": "CVE-2026-46084", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-46084\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-46084\nhttps://lore.kernel.org/linux-cve-announce/2026052701-CVE-2026-46084-b254@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,6a2d6273b6c3581ce7b90ce17b5cbb4efd19438f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,f1ccc4d500a0b87a5599343fc2f798048836e184)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,8ba804869382ce307f2a15f5f6f2adfd791f41dc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,3be5ed233de03b00ae868cfc06e95331d8d9007c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0266a177631d4c6b963b5b12dd986a8c5abdbf06,dbeb256e8dd87233d891b170c0b32a6466467036)"}}], "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": "6.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.140,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.86,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.27,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.4,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1-rc1,*)"}}], "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": "2026-05-27T22:00:18.003115+00:00", "updated": "2026-08-12T03:30:04.361811+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}