CVE-2026-53217

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The current CPU sync starts at\ndma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the\nunused headroom and misses the same number of bytes at the packet tail.\n\nOn non-coherent DMA systems this can leave the CPU reading stale cache\ncontents for the end of the received frame.\n\nUse dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range\noffset so the sync covers the Marvell header and packet data actually\nwritten by hardware."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L", "baseScore": 8.6, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable code is in the Ethernet RX path and is reached by packets received on an affected mvpp2 network interface. A remote peer can trigger it by sending network traffic to a system using this driver.\nAC:L - On affected non-coherent DMA deployments, exploitation only requires sending received frames that traverse the normal RX/NAPI path. There is no race or attacker-uncontrolled timing requirement in the vulnerable path.\nPR:N - No local privileges or authentication are required to reach the receive path. The attacker only needs network reachability to the affected interface.\nUI:N - Packet reception and processing happen automatically once the interface is up. No user action is required.\nS:U - The bug affects packet data handled within the same kernel/network-device security authority. It does not cross a VM, IOMMU, or other separate security boundary.\nC:H - The incorrect DMA sync can leave stale cache contents in the tail of received skbs, potentially exposing previous packet-buffer contents through delivery, forwarding, or reflection. Repeated remote triggering can disclose more than a few bounded bytes of network data over time.\nI:L - The CPU-visible packet tail can differ from the actual frame written by hardware, corrupting data delivered to XDP, the network stack, or applications. This is packet/data integrity loss, but not an arbitrary kernel memory write or control-flow primitive.\nA:L - An attacker can repeatedly cause corrupted received packets, leading to packet drops, protocol failures, or degraded network service. The investigated path does not indicate a kernel panic, hang, or reliable full-system DoS."}]}], "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/mvpp2/mvpp2_main.c"], "versions": [{"version": "e1921168bbd4810de4197446e52f652cd0dd9541", "lessThan": "60412bdd1b2576659eac23a23d2d9ff96228a643", "status": "affected", "versionType": "git"}, {"version": "e1921168bbd4810de4197446e52f652cd0dd9541", "lessThan": "19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8", "status": "affected", "versionType": "git"}, {"version": "e1921168bbd4810de4197446e52f652cd0dd9541", "lessThan": "a3ad9b5767c89531fc7dae951b51b0933dcf7051", "status": "affected", "versionType": "git"}, {"version": "e1921168bbd4810de4197446e52f652cd0dd9541", "lessThan": "bede0f481b9137d73d1cf64309cbe4b94818a5d6", "status": "affected", "versionType": "git"}, {"version": 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A remote peer can trigger it by sending network traffic to a system using this driver.\nAC:L - On affected non-coherent DMA deployments, exploitation only requires sending received frames that traverse the normal RX/NAPI path. There is no race or attacker-uncontrolled timing requirement in the vulnerable path.\nPR:N - No local privileges or authentication are required to reach the receive path. The attacker only needs network reachability to the affected interface.\nUI:N - Packet reception and processing happen automatically once the interface is up. No user action is required.\nS:U - The bug affects packet data handled within the same kernel/network-device security authority. It does not cross a VM, IOMMU, or other separate security boundary.\nC:H - The incorrect DMA sync can leave stale cache contents in the tail of received skbs, potentially exposing previous packet-buffer contents through delivery, forwarding, or reflection. Repeated remote triggering can disclose more than a few bounded bytes of network data over time.\nI:L - The CPU-visible packet tail can differ from the actual frame written by hardware, corrupting data delivered to XDP, the network stack, or applications. This is packet/data integrity loss, but not an arbitrary kernel memory write or control-flow primitive.\nA:L - An attacker can repeatedly cause corrupted received packets, leading to packet drops, protocol failures, or degraded network service. 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The current CPU sync starts at\ndma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the\nunused headroom and misses the same number of bytes at the packet tail.\n\nOn non-coherent DMA systems this can leave the CPU reading stale cache\ncontents for the end of the received frame.\n\nUse dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range\noffset so the sync covers the Marvell header and packet data actually\nwritten by hardware."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.259", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.210", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.176", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.143", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.94", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.36", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.13", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "5.5"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:34:13.595Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53217", "state": "PUBLISHED", "dateUpdated": "2026-10-19T19:57:29.347Z", "dateReserved": "2026-06-09T07:44:35.392Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-25T08:39:20.186Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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"vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "B0E8FC71-3952-444C-83E9-718DBBBEC615", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "1039E95A-8CC3-4C88-8FF9-5C08EEB861C9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mvpp2: sync RX data at the hardware packet offset\n\nmvpp2 programs the RX queue packet offset, so hardware writes received\ndata at dma_addr + MVPP2_SKB_HEADROOM. The current CPU sync starts at\ndma_addr and only covers rx_bytes + MVPP2_MH_SIZE bytes, which syncs the\nunused headroom and misses the same number of bytes at the packet tail.\n\nOn non-coherent DMA systems this can leave the CPU reading stale cache\ncontents for the end of the received frame.\n\nUse dma_sync_single_range_for_cpu() with MVPP2_SKB_HEADROOM as the range\noffset so the sync covers the Marvell header and packet data actually\nwritten by hardware."}], "id": "CVE-2026-53217", "lastModified": "2026-10-19T20:19:10.100", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53217", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:27:02.000688Z", "version": "2.0.3"}}]}, "published": "2026-06-25T09:16:39.387", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/180235600934bef6add3be637c296d6cf3272e67"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/23548007b3c66d628fc7d6b80d1e23be04ea10d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/60412bdd1b2576659eac23a23d2d9ff96228a643"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a13199fa224e9f776f4005d5037df03aa9ea8f37"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a3ad9b5767c89531fc7dae951b51b0933dcf7051"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bede0f481b9137d73d1cf64309cbe4b94818a5d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e302206ad84a407a7e5f3f6fe767ff5efaace689"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-682"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: net: mvpp2: sync RX data at the hardware packet offset", "id": "2492804", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492804"}, "csaw": false, "cwe": "CWE-821", "details": ["A flaw was found in the Linux kernel's mvpp2 network driver. This issue occurs because the driver incorrectly synchronizes received (RX) data at the hardware packet offset. On systems with non-coherent Direct Memory Access (DMA), this can lead to the Central Processing Unit (CPU) reading stale cache contents instead of the actual received network frame data. This vulnerability could result in information disclosure."], "name": "CVE-2026-53217", "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": "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": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53217\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53217\nhttps://lore.kernel.org/linux-cve-announce/2026062504-CVE-2026-53217-ff47@gregkh/T"]}

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