172 lines
9.7 KiB
JSON
172 lines
9.7 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-2024-46862",
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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": "2024-09-27T12:42:51.738Z",
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"dateUpdated": "2026-08-05T11:39:05.352Z"
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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": "2026-08-05T11:39:05.352Z"
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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-mtl-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:N/UI:N/S:U/C:H/I:L/A:H",
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"baseScore": 8,
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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 defective table is consumed by `hda_sdw_machine_select()` during SOF PCI driver probe on the host itself; there is no network, adjacent-network, or attacker-attachable-device path — the SoundWire codec topology comes from soldered hardware and BIOS ACPI `_ADR` tables. The impact is confined to the local machine's kernel, making Local the applicable and highest-severity reachable vector.\nAC:L - On an affected Meteor Lake platform (cs42l43 reported on link 0), the first link entry matches, `link++` steps off the end of the one-element `mtl_cs42l43_l0[]` array, and the out-of-bounds read occurs deterministically on every probe — no race, timing window, or memory-layout gamble is involved. The `.rodata` contents that follow the array are fixed by the build, so the outcome is reproducible on every boot of that image.\nPR:N - The SOF Intel driver binds automatically from its PCI ID table at boot and walks `snd_soc_acpi_intel_mtl_sdw_machines[]` with no authentication, credential, or capability check anywhere on the path. No account or privilege level is needed for the out-of-bounds access to occur.\nUI:N - Machine selection happens inside driver probe during kernel initialization, before any userspace audio access. No mount, file open, or other victim action is required.\nS:U - The out-of-bounds read and any resulting fault occur in the kernel's own audio driver on the same host, within a single security authority. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - Past the array end the loop reads a `u32 num_adr` and a `const struct snd_soc_acpi_adr_device *adr_d` from adjacent `.rodata`, then `snd_soc_acpi_sdw_link_slaves_found()` dereferences that OOB-derived pointer for `num_adr` iterations — an unbounded read at an address not constrained by any check, not a strictly bounded few-byte overread. The fetched `adr` values are decoded into part/mfg/link IDs and emitted to the kernel log via `dev_dbg()`, providing a disclosure channel for the out-of-bounds contents.\nI:L - The path is read-only — `link` is `const` and nothing is written out of bounds, so there is no memory-corruption or control-flow-hijack primitive. However, walking the unterminated array makes the loop evaluate unrelated link descriptors and reject the correct machine entry, so the driver selects a different machine descriptor and DSP topology than the firmware actually describes, a limited divergence of kernel configuration state.\nA:H - The out-of-bounds `adr_d` pointer combined with an out-of-bounds `num_adr` count can walk far past any mapped `.rodata` and fault, producing a kernel oops during driver probe. Even without a fault, the mis-terminated table causes the cs42l43-only machine to never be matched, leaving the audio device non-functional on every boot."
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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-mtl-match.c"
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],
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"versions": [
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{
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"version": "f77ae7fcdc47630eb7653983f3c57ac44103aebc",
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"lessThan": "01281a9e8275946aa725db0919769b8d35af3a11",
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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": "f77ae7fcdc47630eb7653983f3c57ac44103aebc",
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"lessThan": "bf6d7a44a144aa9c476dee83c23faf3151181bab",
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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-mtl-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/01281a9e8275946aa725db0919769b8d35af3a11"
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},
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{
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"url": "https://git.kernel.org/stable/c/bf6d7a44a144aa9c476dee83c23faf3151181bab"
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}
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],
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"title": "ASoC: Intel: soc-acpi-intel-mtl-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": "2024-09-29T13:49:23.635334Z",
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"id": "CVE-2024-46862",
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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": "2024-09-29T13:49:28.174Z"
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}
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}
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]
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}
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} |