CVE-2024-46862

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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 \u2014 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 \u2014 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 \u2014 `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."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/soc/intel/common/soc-acpi-intel-mtl-match.c"], "versions": [{"version": "f77ae7fcdc47630eb7653983f3c57ac44103aebc", "lessThan": "01281a9e8275946aa725db0919769b8d35af3a11", "status": "affected", "versionType": "git"}, {"version": "f77ae7fcdc47630eb7653983f3c57ac44103aebc", "lessThan": "bf6d7a44a144aa9c476dee83c23faf3151181bab", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/soc/intel/common/soc-acpi-intel-mtl-match.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.10.11", "lessThanOrEqual": "6.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.10.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.11"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/01281a9e8275946aa725db0919769b8d35af3a11"}, {"url": "https://git.kernel.org/stable/c/bf6d7a44a144aa9c476dee83c23faf3151181bab"}], "title": "ASoC: Intel: soc-acpi-intel-mtl-match: add missing empty item", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-09-29T13:49:23.635334Z", "id": "CVE-2024-46862", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-29T13:49:28.174Z"}}]}}

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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 \u2014 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 \u2014 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 \u2014 `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."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "f77ae7fcdc47630eb7653983f3c57ac44103aebc", "lessThan": "01281a9e8275946aa725db0919769b8d35af3a11", "versionType": "git"}, {"status": "affected", "version": "f77ae7fcdc47630eb7653983f3c57ac44103aebc", "lessThan": "bf6d7a44a144aa9c476dee83c23faf3151181bab", "versionType": "git"}], "programFiles": ["sound/soc/intel/common/soc-acpi-intel-mtl-match.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"status": "unaffected", "version": "0", "lessThan": "6.10", "versionType": "semver"}, {"status": "unaffected", "version": "6.10.11", "versionType": "semver", "lessThanOrEqual": "6.10.*"}, {"status": "unaffected", "version": "6.11", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["sound/soc/intel/common/soc-acpi-intel-mtl-match.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/01281a9e8275946aa725db0919769b8d35af3a11"}, {"url": "https://git.kernel.org/stable/c/bf6d7a44a144aa9c476dee83c23faf3151181bab"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.10.11", "versionStartIncluding": "6.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.11", "versionStartIncluding": "6.10"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:39:05.352Z"}}}, "cveMetadata": {"cveId": "CVE-2024-46862", "state": "PUBLISHED", "dateUpdated": "2026-08-05T11:39:05.352Z", "dateReserved": "2024-09-11T15:12:18.293Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-09-27T12:42:51.738Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Por lo tanto, se requiere un elemento vac\u00edo en la matriz struct snd_soc_acpi_link_adr."}], "id": "CVE-2024-46862", "lastModified": "2026-08-04T11:20:34.657", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.5, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-46862", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-29T13:49:23.635334Z", "version": "2.0.3"}}]}, "published": "2024-09-27T13:15:17.627", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/01281a9e8275946aa725db0919769b8d35af3a11"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bf6d7a44a144aa9c476dee83c23faf3151181bab"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ASoC: Intel: soc-acpi-intel-mtl-match: add missing empty item", "id": "2315214", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2315214"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-606", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nASoC: Intel: soc-acpi-intel-mtl-match: add missing empty item\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."], "name": "CVE-2024-46862", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-09-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-46862\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-46862\nhttps://lore.kernel.org/linux-cve-announce/2024092745-CVE-2024-46862-eb45@gregkh/T"], "threat_severity": "Low"}

{}