180 lines
9.8 KiB
JSON
180 lines
9.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-37935",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-04-16T04:51:23.971Z",
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"datePublished": "2025-05-20T15:21:59.381Z",
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"dateUpdated": "2026-08-05T11:58:28.431Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:58:28.431Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM\n\nIf the mtk_poll_rx() function detects the MTK_RESETTING flag, it will\njump to release_desc and refill the high word of the SDP on the 4GB RFB.\nSubsequently, mtk_rx_clean will process an incorrect SDP, leading to a\npanic.\n\nAdd patch from MediaTek's SDK to resolve this."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The vulnerable code is the ethernet RX NAPI descriptor-recycling path, executed for every frame received on a WAN/LAN-facing port of an MT7988 router SoC, and the state that triggers it (RX FIFO overflow, free-queue-empty, DMA hang, atomic allocation failure) is produced by a sustained inbound packet flood that can be routed from anywhere. No local access or L2 adjacency is required to deliver the traffic.\nAC:L - An attacker driving sustained traffic reliably produces the RFIFO_OV/FQ_EMPTY/DMA-hang conditions that schedule SER, and once MTK_RESETTING is set every in-flight NAPI descriptor deterministically takes the release_desc path and gets its ADDR64 clobbered; the 4GB-straddling buffer placement that makes the corruption harmful is the default state on any affected 4GB+ board.\nPR:N - Triggering requires only sending network frames to the device — there is no credential check, socket ownership, or capability gate anywhere between packet arrival and mtk_poll_rx().\nUI:N - The corruption occurs entirely within the driver's receive and reset paths with no victim action required.\nS:U - The corrupted DMA address and the resulting panic stay within the kernel's own security authority; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - Because the re-armed descriptor points at the wrong physical page, the buffer handed up as an skb contains stale kernel memory rather than the received frame, and on a router that content can be forwarded back onto the wire; the bogus dma_unmap_single() over unrelated physical memory compounds the exposure.\nI:H - The RX DMA engine is handed a descriptor whose 36-bit address is off by up to 4GB, so the NIC writes attacker-supplied packet bytes into arbitrary unrelated kernel memory — an out-of-bounds DMA write with attacker-controlled contents that is leverageable for control-flow hijacking.\nA:H - The documented symptom is a kernel panic when mtk_rx_clean() unmaps the corrupted SDP during system error recovery, taking the entire device down."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/mediatek/mtk_eth_soc.c"
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],
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"versions": [
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{
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"lessThan": "cb625f783f70dc6614f03612b8e64ad99cb0a13c",
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"status": "affected",
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/ethernet/mediatek/mtk_eth_soc.c"
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],
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"versions": [
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{
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"version": "6.6",
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"status": "affected"
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},
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{
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"version": "0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.90",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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},
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{
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"version": "6.12.28",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.14.6",
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"lessThanOrEqual": "6.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.15",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"negate": false,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6",
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"versionEndExcluding": "6.6.90"
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/cb625f783f70dc6614f03612b8e64ad99cb0a13c"
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},
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{
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"url": "https://git.kernel.org/stable/c/317013d1ad13524be02d60b9e98f08fbd13f8c14"
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},
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{
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"url": "https://git.kernel.org/stable/c/67619cf69dec5d1d7792808dfa548616742dd51d"
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},
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{
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"url": "https://git.kernel.org/stable/c/6e0490fc36cdac696f96e57b61d93b9ae32e0f4c"
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}
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],
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"title": "net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM",
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