CVE-2026-72399

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72399", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.925Z", "datePublished": "2026-08-15T05:56:24.926Z", "dateUpdated": "2026-08-17T05:43:41.891Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:43:41.891Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: enetc: check the number of BDs needed for xdp_frame\n\nThe size of xdp_redirect_arr array is ENETC_MAX_SKB_FRAGS. However, the\nnumber of fragments contained in xdp_frame may be greater than or equal\nto ENETC_MAX_SKB_FRAGS, which will cause the access to xdp_redirect_arr\nto be out of bounds."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - Remote attackers can deliver multi-fragment frames to an XDP-enabled ingress path that bpf_redirect_map/devmap forwards to an ENETC PF netdev, reaching enetc_xdp_xmit via the standard XDP_REDIRECT flush path without local access.\nAC:L - Once XDP redirect to ENETC is deployed, an attacker can reliably craft or segment traffic to produce xdp_frames with nr_frags+1>13; no race or uncontrollable memory layout is required to trigger the out-of-bounds write.\nPR:N - Exploitation requires no attacker privileges when XDP redirect is pre-deployed on the gateway (normal for edge filtering); unprivileged users with CAP_NET_ADMIN via user namespaces can also attach the needed BPF/XDP programs.\nUI:N - No victim interaction is required beyond sending crafted network traffic; exploitation is fully attacker-driven once the XDP redirect datapath exists.\nS:U - Impact is confined to kernel memory corruption and privilege escalation within the same kernel/host security boundary, not a cross-VM or IOMMU scope change.\nC:H - Stack out-of-bounds writes of enetc_tx_swbd structures past a 13-element array corrupt adjacent stack data and pointers, providing a memory-corruption primitive that can be leveraged for arbitrary kernel memory disclosure.\nI:H - The overflow writes attacker-influenced enetc_tx_swbd fields (DMA addresses, lengths, frame pointers) beyond the buffer bounds, enabling heap/stack corruption suitable for arbitrary write and potential code execution.\nA:H - Corrupting stack-resident transmit metadata and pointers in enetc_xdp_xmit can cause immediate kernel oops/panic or hung transmit paths, constituting total loss of availability."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/freescale/enetc/enetc.c"], "versions": [{"version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "lessThan": "1ecb199b0e6d12ab6c26c0b7edf1a8f4472d9aed", "status": "affected", "versionType": "git"}, {"version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "lessThan": "f55276160ffad3e235b657ee4b7304eb99b90e5c", "status": "affected", "versionType": "git"}, {"version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "lessThan": "cfbc6e9b84dcc0aa2d65c84ea4745af327763209", "status": "affected", "versionType": "git"}, {"version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "lessThan": "1681cc7974a6123f5d5740b03bc11e4784bd2542", "status": "affected", "versionType": "git"}, {"version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "lessThan": "d22829101ab675607ad6c3d420fb3ab875f46bbb", "status": "affected", "versionType": "git"}, {"version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "lessThan": "555c5475e787802eeae0d2b91c2f66c330db2767", "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/freescale/enetc/enetc.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "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": "5.13", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1ecb199b0e6d12ab6c26c0b7edf1a8f4472d9aed"}, {"url": "https://git.kernel.org/stable/c/f55276160ffad3e235b657ee4b7304eb99b90e5c"}, {"url": "https://git.kernel.org/stable/c/cfbc6e9b84dcc0aa2d65c84ea4745af327763209"}, {"url": "https://git.kernel.org/stable/c/1681cc7974a6123f5d5740b03bc11e4784bd2542"}, {"url": "https://git.kernel.org/stable/c/d22829101ab675607ad6c3d420fb3ab875f46bbb"}, {"url": "https://git.kernel.org/stable/c/555c5475e787802eeae0d2b91c2f66c330db2767"}], "title": "net: enetc: check the number of BDs needed for xdp_frame", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/freescale/enetc/enetc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "1ecb199b0e6d12ab6c26c0b7edf1a8f4472d9aed", "status": "affected", "version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "versionType": "git"}, {"lessThan": "f55276160ffad3e235b657ee4b7304eb99b90e5c", "status": "affected", "version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "versionType": "git"}, {"lessThan": "cfbc6e9b84dcc0aa2d65c84ea4745af327763209", "status": "affected", "version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "versionType": "git"}, {"lessThan": "1681cc7974a6123f5d5740b03bc11e4784bd2542", "status": "affected", "version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "versionType": "git"}, {"lessThan": "d22829101ab675607ad6c3d420fb3ab875f46bbb", "status": "affected", "version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "versionType": "git"}, {"lessThan": "555c5475e787802eeae0d2b91c2f66c330db2767", "status": "affected", "version": "9d2b68cc108db2fdb35022ed2d88cfb305c441a6", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/freescale/enetc/enetc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "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\nnet: enetc: check the number of BDs needed for xdp_frame\n\nThe size of xdp_redirect_arr array is ENETC_MAX_SKB_FRAGS. However, the\nnumber of fragments contained in xdp_frame may be greater than or equal\nto ENETC_MAX_SKB_FRAGS, which will cause the access to xdp_redirect_arr\nto be out of bounds."}], "id": "CVE-2026-72399", "lastModified": "2026-08-17T06:19:06.500", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:22:13.460", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1681cc7974a6123f5d5740b03bc11e4784bd2542"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ecb199b0e6d12ab6c26c0b7edf1a8f4472d9aed"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/555c5475e787802eeae0d2b91c2f66c330db2767"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cfbc6e9b84dcc0aa2d65c84ea4745af327763209"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d22829101ab675607ad6c3d420fb3ab875f46bbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f55276160ffad3e235b657ee4b7304eb99b90e5c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: enetc: check the number of BDs needed for xdp_frame", "id": "2516644", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516644"}, "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-805", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: enetc: check the number of BDs needed for xdp_frame\nThe size of xdp_redirect_arr array is ENETC_MAX_SKB_FRAGS. However, the\nnumber of fragments contained in xdp_frame may be greater than or equal\nto ENETC_MAX_SKB_FRAGS, which will cause the access to xdp_redirect_arr\nto be out of bounds.", "A flaw was found in the Linux kernel's enetc network driver. This vulnerability occurs in the eXpress Data Path (XDP) frame processing, where the driver fails to properly check the number of fragments in an XDP frame against the allocated buffer size. A remote attacker could exploit this out-of-bounds memory access by sending specially crafted network packets, potentially leading to a denial of service or arbitrary code execution."], "name": "CVE-2026-72399", "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": "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "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-2026-72399\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72399\nhttps://lore.kernel.org/linux-cve-announce/2026081521-CVE-2026-72399-dfd2@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9d2b68cc108db2fdb35022ed2d88cfb305c441a6,1ecb199b0e6d12ab6c26c0b7edf1a8f4472d9aed)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9d2b68cc108db2fdb35022ed2d88cfb305c441a6,f55276160ffad3e235b657ee4b7304eb99b90e5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9d2b68cc108db2fdb35022ed2d88cfb305c441a6,cfbc6e9b84dcc0aa2d65c84ea4745af327763209)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9d2b68cc108db2fdb35022ed2d88cfb305c441a6,1681cc7974a6123f5d5740b03bc11e4784bd2542)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9d2b68cc108db2fdb35022ed2d88cfb305c441a6,d22829101ab675607ad6c3d420fb3ab875f46bbb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9d2b68cc108db2fdb35022ed2d88cfb305c441a6,555c5475e787802eeae0d2b91c2f66c330db2767)"}}], "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": "5.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.13)"}}, {"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-rc2,*]"}}], "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": "2026-08-15T11:30:07.157265+00:00", "updated": "2026-08-22T04:30:06.711599+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-125", "CWE-129", "CWE-805"]}