172 lines
9.4 KiB
JSON
172 lines
9.4 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-2024-46863",
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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": "2024-09-11T15:12:18.293Z",
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"datePublished": "2024-09-27T12:42:52.373Z",
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"dateUpdated": "2026-08-05T11:39:06.428Z"
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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": "2026-08-05T11:39:06.428Z"
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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\nASoC: Intel: soc-acpi-intel-lnl-match: add missing empty item\n\nThere is no links_num in struct snd_soc_acpi_mach {}, and we test\n!link->num_adr as a condition to end the loop in hda_sdw_machine_select().\nSo an empty item in struct snd_soc_acpi_link_adr array is required."
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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:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
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"baseScore": 7.3,
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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:L - The out-of-bounds walk occurs inside the SOF/HDA PCI driver probe path (`hda_sdw_machine_select`) and the `sof_sdw` machine driver, which are reachable only in the local system context — there is no network, packet, or remote-peer input feeding this code. Re-triggering it requires local driver bind/rebind or a reboot of the affected Lunar Lake platform.\nAC:L - On an affected platform (Intel LNL with a cs42l43 on SoundWire link 0) the unterminated array is walked deterministically on every probe, with no race, timing window, or memory-layout grooming required. There are no conditions the attacker must win or wait for.\nPR:L - No authentication or capability check gates the code — it runs during device probe — but deliberately causing the probe to re-execute (module load or `/sys/bus/pci/drivers/.../bind`) requires local system access. No remote credentials or user-namespace escalation are involved.\nUI:N - The vulnerable loop executes automatically during driver probe at boot; no victim must open a file, mount a filesystem, or take any action.\nS:U - Both the defective data and the faulting reads are within the kernel's own security authority; nothing crosses a VM, IOMMU, or sandbox boundary.\nC:H - This is an out-of-bounds read that is not confined to a few bytes: `hda_sdw_machine_select` reads up to three 16-byte structs past the array, and the OOB-derived `adr_d`/`name_prefix` pointers are then dereferenced in `snd_soc_acpi_sdw_link_slaves_found()` and `parse_sdw_endpoints()`, allowing kernel memory at an uncontrolled address to be read. In the `sof_sdw` path the walk is entirely unbounded and OOB `name_prefix` strings can surface in DAI-link/component names exposed to userspace via /proc/asound and sysfs.\nI:L - There is no out-of-bounds write or arbitrary-write primitive, but the kernel selects the audio machine driver, topology firmware file, and constructs DAI-link/endpoint structures from data read past the end of the array, so kernel state and device configuration are derived from invalid memory.\nA:H - The OOB entry supplies both a `num_adr` count and an `adr_d` pointer that are dereferenced without validation, so a neighbouring `.rodata` object that is not a valid `snd_soc_acpi_link_adr` produces a wild-pointer read and a kernel oops at probe time; the unbounded walk in `sof_sdw.c` compounds this. On the observed layout the machine fails to match, causing complete loss of audio functionality on affected devices."
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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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"sound/soc/intel/common/soc-acpi-intel-lnl-match.c"
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],
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"versions": [
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{
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"version": "dd3bd9dc47084195fcb3c1b371cb03046abb13ab",
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"lessThan": "8eb57389d8ad91c67bf844f5aae4caef74b9091b",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "dd3bd9dc47084195fcb3c1b371cb03046abb13ab",
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"lessThan": "c4246f1fe9f24f8dcd97887ed67d8fcfd91f4796",
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"status": "affected",
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"versionType": "git"
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}
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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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"sound/soc/intel/common/soc-acpi-intel-lnl-match.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.10.11",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "6.10.11"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "6.11"
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}
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]
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}
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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/8eb57389d8ad91c67bf844f5aae4caef74b9091b"
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},
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{
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"url": "https://git.kernel.org/stable/c/c4246f1fe9f24f8dcd97887ed67d8fcfd91f4796"
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}
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],
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"title": "ASoC: Intel: soc-acpi-intel-lnl-match: add missing empty item",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-29T13:45:58.346254Z",
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"id": "CVE-2024-46863",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-29T13:49:05.489Z"
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}
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}
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]
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}
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} |