248 lines
12 KiB
JSON
248 lines
12 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-2024-35891",
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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": "2024-05-17T13:50:33.113Z",
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"datePublished": "2024-05-19T08:34:46.998Z",
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"dateUpdated": "2026-08-05T11:30:45.568Z"
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},
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"dateUpdated": "2026-08-05T11:30:45.568Z"
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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: phy: micrel: Fix potential null pointer dereference\n\nIn lan8814_get_sig_rx() and lan8814_get_sig_tx() ptp_parse_header() may\nreturn NULL as ptp_header due to abnormal packet type or corrupted packet.\nFix this bug by adding ptp_header check.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
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}
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],
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"metrics": [
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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 crash is triggered by a received packet in the NAPI softirq path before any IP/UDP demux — a routable, non-fragmented IPv4/IPv6 UDP datagram to port 319 with fewer than 34 payload bytes suffices, so the attacker need not be on the local segment.\nAC:L - A single deterministic, fully attacker-crafted packet triggers it; there is no race, no timing window, and no dependency on memory layout or victim state.\nPR:N - No credentials, no socket, and no local account are needed — the PTP classifier hook runs on every received frame before any port/permission check.\nUI:N - The vulnerable path executes automatically during packet receive processing with no action from any local user.\nS:U - The fault occurs and is contained within the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The bug is a read of a fixed low address (NULL+30) whose value is only used as a sequence-ID comparison key; no kernel memory contents are disclosed to the attacker.\nI:N - Nothing is written and no adjacent structure is corrupted — the dereference faults before any state is modified.\nA:H - A NULL dereference in NET_RX softirq context produces an oops in interrupt context, panicking the machine, and it can be re-triggered at will with a single unauthenticated packet."
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}
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]
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}
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],
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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/phy/micrel.c"
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"version": "0",
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"versionType": "semver"
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"version": "6.1.85",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"version": "6.6.26",
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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": "6.8.5",
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"lessThanOrEqual": "6.8.*",
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"status": "unaffected",
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},
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{
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"version": "6.9",
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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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"timestamp": "2024-06-17T17:38:45.513318Z",
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"id": "CVE-2024-35891",
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