CVE-2026-53215

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In those cases mvpp2_run_xdp() may have\nrecycled, redirected, or queued the page for XDP_TX, and an skb free also\nretires the data buffer. Returning such a buffer to BM lets hardware DMA\ninto memory that is no longer owned by the RX ring.\n\nRefill the BM pool before handing the current buffer to XDP or to the\nskb. If the allocation fails there, drop the packet and return the\nstill-owned current buffer to BM, preserving the pool depth. Once the\nrefill succeeds, later local drops retire/free the current buffer instead\nof returning it to BM."}], "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 - The vulnerable `mvpp2_rx()` path is reached by packets received on the network interface, including remotely routed traffic to an internet-facing mvpp2-based system.\nAC:L - Triggering requires RX traffic and refill allocation failure, which a high-rate remote packet stream can plausibly induce through RX pressure; no attacker-uncontrolled race or authentication state is required.\nPR:N - No privileges are needed to send packets to the interface, and the normal skb receive path is affected without requiring XDP setup or local administrative actions.\nUI:N - Exploitation is driven by network packet reception and does not require any victim user action.\nS:U - The corruption occurs within the host kernel/driver memory management domain and does not inherently cross a VM, IOMMU, or separate security authority boundary.\nC:H - The bug lets hardware DMA attacker-controlled packet data into memory no longer owned by the RX ring, creating a kernel memory corruption primitive that can be leveraged for disclosure.\nI:H - Returning a freed or retired buffer to the hardware BM pool can produce attacker-controlled DMA writes into reused kernel memory, supporting arbitrary corruption or code execution.\nA:H - The same memory corruption can crash or panic the kernel, and it can be repeatedly triggered with network traffic under RX/refill pressure."}]}], "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": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": 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"https://git.kernel.org/stable/c/a03cdcedb2cbcc42551dc3e4746929e93c5352d5"}, {"url": "https://git.kernel.org/stable/c/580f92f27cb8724bcc4be98ee89890eab524a2ae"}, {"url": "https://git.kernel.org/stable/c/d0c8c4fbd22d260fe28530260656c5fb3c20ce84"}, {"url": "https://git.kernel.org/stable/c/8a2126c5afe89f8ceeb60a3afb9f075b736194cd"}, {"url": "https://git.kernel.org/stable/c/02e1b5c4d3b4c658b72c145427cded1bba613fc1"}, {"url": "https://git.kernel.org/stable/c/5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6"}], "title": "net: mvpp2: refill RX buffers before XDP or skb use", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53215", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T15:26:59.266654Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use 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no attacker-uncontrolled race or authentication state is required.\nPR:N - No privileges are needed to send packets to the interface, and the normal skb receive path is affected without requiring XDP setup or local administrative actions.\nUI:N - Exploitation is driven by network packet reception and does not require any victim user action.\nS:U - The corruption occurs within the host kernel/driver memory management domain and does not inherently cross a VM, IOMMU, or separate security authority boundary.\nC:H - The bug lets hardware DMA attacker-controlled packet data into memory no longer owned by the RX ring, creating a kernel memory corruption primitive that can be leveraged for disclosure.\nI:H - Returning a freed or retired buffer to the hardware BM pool can produce attacker-controlled DMA writes into reused kernel memory, supporting arbitrary corruption or code execution.\nA:H - The same memory corruption can crash or panic the kernel, and it can be repeatedly triggered with network traffic under RX/refill pressure."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "a88b3293b556f4d8fba11db9a8061a6b0d3b69e6", "versionType": "git"}, {"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "a03cdcedb2cbcc42551dc3e4746929e93c5352d5", "versionType": "git"}, {"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "580f92f27cb8724bcc4be98ee89890eab524a2ae", "versionType": "git"}, {"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "d0c8c4fbd22d260fe28530260656c5fb3c20ce84", "versionType": "git"}, {"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "8a2126c5afe89f8ceeb60a3afb9f075b736194cd", "versionType": "git"}, {"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "02e1b5c4d3b4c658b72c145427cded1bba613fc1", "versionType": "git"}, {"status": "affected", "version": "07dd0a7aae7f72af7cec18909581c2bb570edddc", "lessThan": "5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6", "versionType": "git"}, {"status": "affected", "version": "95a936364f2685e9e040c6b179b553604d96de22", "versionType": "git"}, {"status": "affected", "version": "fba2cf348d9eb50b2049a73cc09313dab6d293f1", "versionType": "git"}, {"status": "affected", "version": "5.7.15", "lessThan": "5.8", "versionType": "semver"}, {"status": "affected", "version": "5.8.2", "lessThan": "5.9", "versionType": "semver"}], "programFiles": ["drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.9"}, {"status": "unaffected", "version": "0", "lessThan": "5.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.210", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.176", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.143", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.94", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.36", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.13", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/a88b3293b556f4d8fba11db9a8061a6b0d3b69e6"}, {"url": "https://git.kernel.org/stable/c/a03cdcedb2cbcc42551dc3e4746929e93c5352d5"}, {"url": "https://git.kernel.org/stable/c/580f92f27cb8724bcc4be98ee89890eab524a2ae"}, {"url": "https://git.kernel.org/stable/c/d0c8c4fbd22d260fe28530260656c5fb3c20ce84"}, {"url": "https://git.kernel.org/stable/c/8a2126c5afe89f8ceeb60a3afb9f075b736194cd"}, {"url": "https://git.kernel.org/stable/c/02e1b5c4d3b4c658b72c145427cded1bba613fc1"}, {"url": "https://git.kernel.org/stable/c/5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mvpp2: refill RX buffers before XDP or skb use\n\nThe RX error path returns the current descriptor buffer to the hardware\nBM pool. That is only valid while the driver still owns the buffer.\n\nmvpp2_rx_refill() can fail after the current buffer has been handed to\nXDP or attached to an skb. In those cases mvpp2_run_xdp() may have\nrecycled, redirected, or queued the page for XDP_TX, and an skb free also\nretires the data buffer. Returning such a buffer to BM lets hardware DMA\ninto memory that is no longer owned by the RX ring.\n\nRefill the BM pool before handing the current buffer to XDP or to the\nskb. If the allocation fails there, drop the packet and return the\nstill-owned current buffer to BM, preserving the pool depth. Once the\nrefill succeeds, later local drops retire/free the current buffer instead\nof returning it to BM."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.210", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.176", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.143", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.94", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.36", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.13", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "5.9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.7.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.8.2"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:34:11.464Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53215", "state": "PUBLISHED", "dateUpdated": "2026-10-19T19:57:29.177Z", "dateReserved": "2026-06-09T07:44:35.392Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-25T08:39:18.875Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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That is only valid while the driver still owns the buffer.\n\nmvpp2_rx_refill() can fail after the current buffer has been handed to\nXDP or attached to an skb. In those cases mvpp2_run_xdp() may have\nrecycled, redirected, or queued the page for XDP_TX, and an skb free also\nretires the data buffer. Returning such a buffer to BM lets hardware DMA\ninto memory that is no longer owned by the RX ring.\n\nRefill the BM pool before handing the current buffer to XDP or to the\nskb. If the allocation fails there, drop the packet and return the\nstill-owned current buffer to BM, preserving the pool depth. Once the\nrefill succeeds, later local drops retire/free the current buffer instead\nof returning it to BM."}], "id": "CVE-2026-53215", "lastModified": "2026-10-19T20:19:09.920", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53215", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:26:59.266654Z", "version": "2.0.3"}}]}, "published": "2026-06-25T09:16:39.160", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/02e1b5c4d3b4c658b72c145427cded1bba613fc1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/580f92f27cb8724bcc4be98ee89890eab524a2ae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5e8e2a9624df72fca7c736b2966b2cbf6c9c3ff6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8a2126c5afe89f8ceeb60a3afb9f075b736194cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a03cdcedb2cbcc42551dc3e4746929e93c5352d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a88b3293b556f4d8fba11db9a8061a6b0d3b69e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0c8c4fbd22d260fe28530260656c5fb3c20ce84"}], "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-416"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: net: mvpp2: refill RX buffers before XDP or skb use", "id": "2492758", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492758"}, "csaw": false, "cwe": "CWE-763", "details": ["A flaw was found in the Linux kernel's mvpp2 network driver. This vulnerability occurs due to incorrect handling of receive (RX) buffers, where a buffer is returned to the hardware Buffer Manager (BM) pool after it has been passed to the eXpress Data Path (XDP) or attached to a socket buffer (skb). This allows hardware Direct Memory Access (DMA) operations into memory that is no longer controlled by the RX ring, potentially leading to memory corruption."], "name": "CVE-2026-53215", "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-2026-53215\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53215\nhttps://lore.kernel.org/linux-cve-announce/2026062504-CVE-2026-53215-351e@gregkh/T"]}

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