{"id":"CVE-2026-53217","state":"PUBLISHED","title":"net: mvpp2: sync RX data at the hardware packet offset","description":"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.","publishedAt":"2026-06-25T08:39:20.186Z","updatedAt":"2026-10-19T19:57:29.347Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"60412bdd1b2576659eac23a23d2d9ff96228a643","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"a3ad9b5767c89531fc7dae951b51b0933dcf7051","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"bede0f481b9137d73d1cf64309cbe4b94818a5d6","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"23548007b3c66d628fc7d6b80d1e23be04ea10d9","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"a13199fa224e9f776f4005d5037df03aa9ea8f37","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"e302206ad84a407a7e5f3f6fe767ff5efaace689","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"180235600934bef6add3be637c296d6cf3272e67","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"]}],"references":["https://git.kernel.org/stable/c/60412bdd1b2576659eac23a23d2d9ff96228a643","https://git.kernel.org/stable/c/19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8","https://git.kernel.org/stable/c/a3ad9b5767c89531fc7dae951b51b0933dcf7051","https://git.kernel.org/stable/c/bede0f481b9137d73d1cf64309cbe4b94818a5d6","https://git.kernel.org/stable/c/23548007b3c66d628fc7d6b80d1e23be04ea10d9","https://git.kernel.org/stable/c/a13199fa224e9f776f4005d5037df03aa9ea8f37","https://git.kernel.org/stable/c/e302206ad84a407a7e5f3f6fe767ff5efaace689","https://git.kernel.org/stable/c/180235600934bef6add3be637c296d6cf3272e67"],"weaknesses":["CWE-682"],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53217.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53217","state":"PUBLISHED","datePublished":"2026-06-25T08:39:20.186Z","dateUpdated":"2026-10-19T19:57:29.347Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.392Z"},"containers":{"cna":{"title":"net: mvpp2: sync RX data at the hardware packet offset","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"60412bdd1b2576659eac23a23d2d9ff96228a643","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"a3ad9b5767c89531fc7dae951b51b0933dcf7051","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"bede0f481b9137d73d1cf64309cbe4b94818a5d6","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"23548007b3c66d628fc7d6b80d1e23be04ea10d9","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"a13199fa224e9f776f4005d5037df03aa9ea8f37","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"e302206ad84a407a7e5f3f6fe767ff5efaace689","versionType":"git"},{"version":"e1921168bbd4810de4197446e52f652cd0dd9541","status":"affected","lessThan":"180235600934bef6add3be637c296d6cf3272e67","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.143","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/60412bdd1b2576659eac23a23d2d9ff96228a643"},{"url":"https://git.kernel.org/stable/c/19f8bc139e9b149d1e5bf75ae761d1bb8dd3e7d8"},{"url":"https://git.kernel.org/stable/c/a3ad9b5767c89531fc7dae951b51b0933dcf7051"},{"url":"https://git.kernel.org/stable/c/bede0f481b9137d73d1cf64309cbe4b94818a5d6"},{"url":"https://git.kernel.org/stable/c/23548007b3c66d628fc7d6b80d1e23be04ea10d9"},{"url":"https://git.kernel.org/stable/c/a13199fa224e9f776f4005d5037df03aa9ea8f37"},{"url":"https://git.kernel.org/stable/c/e302206ad84a407a7e5f3f6fe767ff5efaace689"},{"url":"https://git.kernel.org/stable/c/180235600934bef6add3be637c296d6cf3272e67"}],"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."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T12:34:13.595Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.6.143"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-53217","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-16T15:27:02.000688Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-682","lang":"en","type":"CWE","description":"CWE-682 Incorrect Calculation"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T19:57:29.347Z"}}]}}}