{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72312", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.918Z", "datePublished": "2026-08-15T05:55:27.817Z", "dateUpdated": "2026-08-17T05:42:39.727Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:39.727Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: fix VF bringup affecting PF promiscuous state\n\nMbox handling of nix_set_rx_mode for a VF with promiscuous and\nall_multi flags set to false causes deletion of the PF's promiscuous\nand allmulti MCAM rules. This occurs because the APIs that\nenable/disable these rules operate only on the PF, even when the\nmbox request is made via a VF interface.\n\nGuard both rvu_npc_enable_allmulti_entry() and\nrvu_npc_enable_promisc_entry() disable paths with an is_vf() check so\nthat a VF bringing up or tearing down its interface cannot inadvertently\nclear the PF's MCAM rules."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H", "baseScore": 7.9, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation requires local control of an SR-IOV VF netdev on Marvell OcteonTX2/CN10K hardware; the bug is triggered via the VF driver's mailbox to the AF (rvu_mbox_handler_nix_set_rx_mode), not by remote packet delivery.\nAC:L - An attacker with VF netdev access can reliably trigger the flaw by bringing the interface up/down or changing rx_mode (e.g., ip link set up), which sends NIX_SET_RX_MODE with promisc/allmulti cleared; no race or victim timing is required.\nPR:L - Only guest/namespace CAP_NET_ADMIN (or equivalent root in an SR-IOV-assigned VM) is needed to manage the VF netdev; host init-namespace root is not required and user namespaces cannot reach this hardware path without the VF device.\nUI:N - No victim interaction is needed; the attacker initiates VF interface bringup/teardown or rx_mode updates that invoke otx2_do_set_rx_mode/otx2vf_do_set_rx_mode and the AF mbox handler.\nS:C - A VF tenant can alter PF-side NPC MCAM promiscuous/allmulti rules (rvu_npc_enable_promisc_entry/rvu_npc_enable_allmulti_entry mask pcifunc to the PF), crossing the SR-IOV isolation boundary between guest/tenant and host/provider packet filtering.\nC:L - Disabling the PF promiscuous/allmulti MCAM entries can blind host IDS/tcpdump and other monitoring that depends on promiscuous reception, reducing visibility into network traffic on the affected PF (limited confidentiality impact, not arbitrary kernel memory read).\nI:L - The VF causes unauthorized modification of host-side hardware packet-filter state by disabling PF MCAM promisc/allmulti rules; this is limited integrity impact on network policy rather than arbitrary memory or code execution.\nA:H - Clearing PF promiscuous and allmulti MCAM rules can break or degrade PF multicast delivery and promiscuous capture/monitoring on internet-facing cloud/edge servers using these NICs, and can be repeated by cycling the VF interface."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c"], "versions": [{"version": "967db3529ecac305d230aa4e60abddf6ab63543a", "lessThan": "daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c", "status": "affected", "versionType": "git"}, {"version": "967db3529ecac305d230aa4e60abddf6ab63543a", "lessThan": "212c59e5e416859579272288fd325148fc316109", "status": "affected", "versionType": "git"}, {"version": "967db3529ecac305d230aa4e60abddf6ab63543a", "lessThan": "53e17d9ed779ad25870abb9c31bc294c71a2278c", "status": "affected", "versionType": "git"}, {"version": "967db3529ecac305d230aa4e60abddf6ab63543a", "lessThan": "3de77d2f34c2bc2acaedabc2c5e0a561b85c283a", "status": "affected", "versionType": "git"}, {"version": "967db3529ecac305d230aa4e60abddf6ab63543a", "lessThan": "3cf83432e0561aef6d7ec2664909d12d0ff0ffc1", "status": "affected", "versionType": "git"}, {"version": "967db3529ecac305d230aa4e60abddf6ab63543a", "lessThan": "fabb881df322da25442f98d23f5fa371e3c78ec4", "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/net/ethernet/marvell/octeontx2/af/rvu_nix.c"], "versions": [{"version": "5.14", "status": "affected"}, {"version": "0", "lessThan": "5.14", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.14", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.14", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c"}, {"url": "https://git.kernel.org/stable/c/212c59e5e416859579272288fd325148fc316109"}, {"url": "https://git.kernel.org/stable/c/53e17d9ed779ad25870abb9c31bc294c71a2278c"}, {"url": "https://git.kernel.org/stable/c/3de77d2f34c2bc2acaedabc2c5e0a561b85c283a"}, {"url": "https://git.kernel.org/stable/c/3cf83432e0561aef6d7ec2664909d12d0ff0ffc1"}, {"url": "https://git.kernel.org/stable/c/fabb881df322da25442f98d23f5fa371e3c78ec4"}], "title": "octeontx2-af: fix VF bringup affecting PF promiscuous state", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c", "status": "affected", "version": "967db3529ecac305d230aa4e60abddf6ab63543a", "versionType": "git"}, {"lessThan": "212c59e5e416859579272288fd325148fc316109", "status": "affected", "version": "967db3529ecac305d230aa4e60abddf6ab63543a", "versionType": "git"}, {"lessThan": "53e17d9ed779ad25870abb9c31bc294c71a2278c", "status": "affected", "version": "967db3529ecac305d230aa4e60abddf6ab63543a", "versionType": "git"}, {"lessThan": "3de77d2f34c2bc2acaedabc2c5e0a561b85c283a", "status": "affected", "version": "967db3529ecac305d230aa4e60abddf6ab63543a", "versionType": "git"}, {"lessThan": "3cf83432e0561aef6d7ec2664909d12d0ff0ffc1", "status": "affected", "version": "967db3529ecac305d230aa4e60abddf6ab63543a", "versionType": "git"}, {"lessThan": "fabb881df322da25442f98d23f5fa371e3c78ec4", "status": "affected", "version": "967db3529ecac305d230aa4e60abddf6ab63543a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.14"}, {"lessThan": "5.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nocteontx2-af: fix VF bringup affecting PF promiscuous state\n\nMbox handling of nix_set_rx_mode for a VF with promiscuous and\nall_multi flags set to false causes deletion of the PF's promiscuous\nand allmulti MCAM rules. This occurs because the APIs that\nenable/disable these rules operate only on the PF, even when the\nmbox request is made via a VF interface.\n\nGuard both rvu_npc_enable_allmulti_entry() and\nrvu_npc_enable_promisc_entry() disable paths with an is_vf() check so\nthat a VF bringing up or tearing down its interface cannot inadvertently\nclear the PF's MCAM rules."}], "id": "CVE-2026-72312", "lastModified": "2026-08-17T06:18:34.310", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.9, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 5.3, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:22:04.013", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/212c59e5e416859579272288fd325148fc316109"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3cf83432e0561aef6d7ec2664909d12d0ff0ffc1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3de77d2f34c2bc2acaedabc2c5e0a561b85c283a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/53e17d9ed779ad25870abb9c31bc294c71a2278c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fabb881df322da25442f98d23f5fa371e3c78ec4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: octeontx2-af: fix VF bringup affecting PF promiscuous state", "id": "2516362", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516362"}, "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-266", "details": ["A flaw was found in the Linux kernel's `octeontx2-af` driver. A Virtual Function (VF), which is a virtualized network interface, can inadvertently disable the promiscuous and all-multicast (all_multi) modes of the Physical Function (PF) network interface. This occurs because the underlying application programming interfaces (APIs) that control these modes operate globally on the PF, even when a request originates from a VF. An attacker with control over a VF could potentially disrupt network traffic monitoring or multicast communication on the PF, leading to a denial of service or information disclosure."], "name": "CVE-2026-72312", "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": "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"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72312\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72312\nhttps://lore.kernel.org/linux-cve-announce/2026081504-CVE-2026-72312-a68f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[967db3529ecac305d230aa4e60abddf6ab63543a,daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[967db3529ecac305d230aa4e60abddf6ab63543a,212c59e5e416859579272288fd325148fc316109)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[967db3529ecac305d230aa4e60abddf6ab63543a,3cf83432e0561aef6d7ec2664909d12d0ff0ffc1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[967db3529ecac305d230aa4e60abddf6ab63543a,3de77d2f34c2bc2acaedabc2c5e0a561b85c283a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[967db3529ecac305d230aa4e60abddf6ab63543a,53e17d9ed779ad25870abb9c31bc294c71a2278c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[967db3529ecac305d230aa4e60abddf6ab63543a,fabb881df322da25442f98d23f5fa371e3c78ec4)"}}], "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": "5.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*]"}}], "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": "2026-08-15T19:00:03.259478+00:00", "updated": "2026-08-22T08:45:03.185167+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}