{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72410", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.926Z", "datePublished": "2026-08-15T05:56:32.843Z", "dateUpdated": "2026-08-17T05:43:50.739Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:43:50.739Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-af: Validate NIX maximum LFs correctly\n\nNIX maximum number of LFs can be set via devlink command\nbut that can be done before assigning any LFs to a PF/VF.\nThe condition used to check whether any LFs are assigned is\nincorrect. This patch fixes that condition."}], "metrics": [{"cvssV3_1": {"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"}, "scenarios": [{"lang": "en", "value": "AV:L - The flaw is reached only via DEVLINK_CMD_PARAM_SET netlink to the octeontx2-af RVU Admin Function devlink \"nix_maxlf\" parameter; there is no remote packet, mbox, or ioctl path into rvu_af_dl_nix_maxlf_validate()/set().\nAC:L - A CAP_NET_ADMIN caller can deterministically attach NIX LFs (PF/VF netdev probe) and issue the devlink set in the window before MCAM entries are allocated; the buggy mcam->bmap_fcnt check is bypassed whenever LFs are assigned but the MCAM bitmap is still full.\nPR:L - DEVLINK_CMD_PARAM_SET requires GENL_ADMIN_PERM (CAP_NET_ADMIN). On OcteonTX2 cloud/edge servers the AF devlink is host-local admin surface reachable by any principal holding netdev admin capability, including container runtimes granted CAP_NET_ADMIN.\nUI:N - Exploitation is fully programmatic via devlink netlink and concurrent netdev bringup; no victim click, mount, or other interactive action is required beyond the attacker's own administrative commands.\nS:U - Impact is confined to kernel/AF driver state on the host managing the Marvell OcteonTX2 NIC; it does not cross a VM-hypervisor, IOMMU, or container sandbox boundary to compromise a separate security authority.\nC:H - Bypassing validation lets rvu_af_dl_nix_maxlf_set() change block->lf.max while LFs remain assigned, tear down MCAM tracking via npc_mcam_rsrcs_deinit(), and reinit with wrong nixlf_count, desynchronizing MCAM index math and enabling out-of-bounds reads of kmalloc'd MCAM metadata.\nI:H - The same desync corrupts MCAM entry2pfvf_map/entry2cntr_map bookkeeping and NIX LF resource maps while hardware LFs stay attached, giving attacker-influenced out-of-bounds writes during subsequent MCAM/NIX operations and a plausible path to kernel code execution.\nA:H - Forcing MCAM reinitialization and inconsistent LF limits on an active OcteonTX2 AF can panic/oops the kernel or wedge NIC packet processing on internet-facing servers and telco/cloud nodes that depend on this hardware for line-rate networking."}]}], "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_devlink.c"], "versions": [{"version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "lessThan": "0933fe0130eb71af0c3ab481b40f543b458a8c54", "status": "affected", "versionType": "git"}, {"version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "lessThan": "e0ac054416bf4e913fe96cefefe94e3331bbe6fa", "status": "affected", "versionType": "git"}, {"version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "lessThan": "b1f6381acf9d55fab208e8b4c252a5a671820bd9", "status": "affected", "versionType": "git"}, {"version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "lessThan": "1576d12a39860418d6a68b402fda71a48f04a57c", "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_devlink.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "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": "6.8", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0933fe0130eb71af0c3ab481b40f543b458a8c54"}, {"url": "https://git.kernel.org/stable/c/e0ac054416bf4e913fe96cefefe94e3331bbe6fa"}, {"url": "https://git.kernel.org/stable/c/b1f6381acf9d55fab208e8b4c252a5a671820bd9"}, {"url": "https://git.kernel.org/stable/c/1576d12a39860418d6a68b402fda71a48f04a57c"}], "title": "octeontx2-af: Validate NIX maximum LFs correctly", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0933fe0130eb71af0c3ab481b40f543b458a8c54", "status": "affected", "version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "versionType": "git"}, {"lessThan": "e0ac054416bf4e913fe96cefefe94e3331bbe6fa", "status": "affected", "version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "versionType": "git"}, {"lessThan": "b1f6381acf9d55fab208e8b4c252a5a671820bd9", "status": "affected", "version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "versionType": "git"}, {"lessThan": "1576d12a39860418d6a68b402fda71a48f04a57c", "status": "affected", "version": "dd7842878633453e38d6a4927593dd28b9d8ab91", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/octeontx2/af/rvu_devlink.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "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: Validate NIX maximum LFs correctly\n\nNIX maximum number of LFs can be set via devlink command\nbut that can be done before assigning any LFs to a PF/VF.\nThe condition used to check whether any LFs are assigned is\nincorrect. This patch fixes that condition."}], "id": "CVE-2026-72410", "lastModified": "2026-08-17T06:19:07.830", "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:22:14.623", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0933fe0130eb71af0c3ab481b40f543b458a8c54"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1576d12a39860418d6a68b402fda71a48f04a57c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b1f6381acf9d55fab208e8b4c252a5a671820bd9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e0ac054416bf4e913fe96cefefe94e3331bbe6fa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}