159 lines
7.9 KiB
JSON
159 lines
7.9 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-2026-43462",
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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": "2026-05-01T14:12:56.010Z",
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"datePublished": "2026-05-08T14:22:24.686Z",
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"dateUpdated": "2026-08-05T12:28:06.464Z"
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},
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:28:06.464Z"
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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: spacemit: Fix error handling in emac_tx_mem_map()\n\nThe DMA mappings were leaked on mapping error. Free them with the\nexisting emac_free_tx_buf() function."
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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:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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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 transmit path is reachable by network-driven egress traffic on a SpacemiT K1 system, such as routed packets or unauthenticated service responses that cause SKBs to be queued to this Ethernet device.\nAC:L - There is no race or precise timing requirement; an attacker can repeatedly drive fragmented TX traffic and resource pressure until a mid-packet DMA mapping failure exercises the buggy cleanup path.\nPR:N - In a network-facing or forwarding deployment, the attacker does not need local credentials or kernel capabilities to cause packets to be transmitted through the affected NIC.\nUI:N - No victim user action is required once the affected interface and service/forwarding path are active.\nS:U - The impact remains within the kernel/network device availability domain and does not cross a VM, IOMMU isolation, or sandbox security boundary.\nC:N - The confirmed bug is an orphaned DMA mapping/resource leak on TX mapping failure, with no demonstrated attacker-visible read primitive.\nI:N - The leaked DMA mappings are for TX buffers and the fix does not indicate an arbitrary write, data modification, or control-flow corruption primitive.\nA:H - Repeated leaks of DMA/IOMMU mapping resources can exhaust DMA resources and cause sustained transmit failure or complete network loss on the affected device."
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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/spacemit/k1_emac.c"
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],
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"versions": [
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{
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"lessThan": "c34ebd7b24ea70be3c6fdb6936f79f593f37df60",
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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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"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/spacemit/k1_emac.c"
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],
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"versions": [
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{
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"version": "6.18",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.18",
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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": "6.18.19",
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"lessThanOrEqual": "6.18.*",
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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": "6.19.9",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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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"versionEndExcluding": "6.18.19"
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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/c34ebd7b24ea70be3c6fdb6936f79f593f37df60"
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},
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{
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"url": "https://git.kernel.org/stable/c/edeaba385318f60ec1b32470da4d5eb800294d16"
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},
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{
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"url": "https://git.kernel.org/stable/c/86292155bea578ebab0ca3b65d4d87ecd8a0e9ea"
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}
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],
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"title": "net: spacemit: Fix error handling in emac_tx_mem_map()",
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