CVE-2024-42097

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membership.\nUI:N - The attacker issues the patch-load ioctl or write entirely on their own; no other user has to open a file, mount anything, or take any action.\nS:U - The out-of-bounds accesses, integer overflows and crashes stay inside the kernel's own security authority in the ALSA emux/soundfont code; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unvalidated `patch.len` drives an unbounded (up to 2 GB) read past the data the caller actually supplied, and the resulting sample descriptor records extents larger than the block `snd_emu10k1_synth_alloc()` returned, so the synth engine subsequently reads adjacent emu10k1-mapped host pages belonging to other samples and clients.\nI:H - The unchecked length propagates into `truesize`/`blocksize` arithmetic that overflows `int` into negative sizes reaching the allocator and the copy routines, leaves the sample descriptor's extents beyond the allocated synth block so the emu8000 write loop stores past it, and on pre-v5.5 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open file descriptor on the emux hwdep node or the OSS sequencer node is needed \u2014 no capability is checked anywhere along `snd_emux_hwdep_load_patch()`/`snd_emux_load_patch_seq_oss()` \u2014 and desktop sessions grant those nodes to the logged-in user via logind ACLs or `audio` group membership.\nUI:N - The attacker issues the patch-load ioctl or write entirely on their own; no other user has to open a file, mount anything, or take any action.\nS:U - The out-of-bounds accesses, integer overflows and crashes stay inside the kernel's own security authority in the ALSA emux/soundfont code; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unvalidated `patch.len` drives an unbounded (up to 2 GB) read past the data the caller actually supplied, and the resulting sample descriptor records extents larger than the block `snd_emu10k1_synth_alloc()` returned, so the synth engine subsequently reads adjacent emu10k1-mapped host pages belonging to other samples and clients.\nI:H - The 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GNU/Linux subsystem", "vendor": "Siemens", "versions": [{"lessThan": "V1.1.1", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AD25C2E5-C116-4160-BA6D-CE9B0D10AE3E", "versionEndExcluding": "4.19.317", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "F4E38E58-1B9F-4DF2-AD3D-A8BEAA2959D8", "versionEndExcluding": "5.4.279", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "659E1520-6345-41AF-B893-A7C0647585A0", "versionEndExcluding": "5.10.221", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "10A39ACC-3005-40E8-875C-98A372D1FFD5", "versionEndExcluding": "5.15.162", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "748B6C4B-1F61-47F9-96CC-8899B8412D84", "versionEndExcluding": "6.1.97", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D72E033B-5323-4C4D-8818-36E1EBC3535F", "versionEndExcluding": "6.6.37", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E95105F2-32E3-4C5F-9D18-7AEFD0E6275C", "versionEndExcluding": "6.9.8", "versionStartIncluding": "6.7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: emux: improve patch ioctl data validation\n\nIn load_data(), make the validation of and skipping over the main info\nblock match that in load_guspatch().\n\nIn load_guspatch(), add checking that the specified patch length matches\nthe actually supplied data, like load_data() already did."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: emux: mejorar la validaci\u00f3n de datos del parche ioctl En load_data(), hacer que la validaci\u00f3n y la omisi\u00f3n del bloque de informaci\u00f3n principal coincidan con la de load_guspatch(). En load_guspatch(), agregue la verificaci\u00f3n de que la longitud del parche especificado coincida con los datos realmente proporcionados, como ya lo hizo load_data()."}], "id": "CVE-2024-42097", "lastModified": "2026-10-15T01:18:43.533", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "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-2024-42097", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T16:18:18.485738Z", "version": "2.0.3"}}]}, "published": "2024-07-29T18:15:12.167", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40d7def67841343c10f8642a41031fecbb248bab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/79d9a000f0220cdaba1682d2a23c0d0c61d620a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7a18293fd8d8519c2f7a03753bc1583b18e3db69"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87039b83fb7bfd7d0e0499aaa8e6c049906b4d14"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89b32ccb12ae67e630c6453d778ec30a592a212f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0ff2443fcbb472206d45a5d2a90cc694065804e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d23982ea9aa438f35a8c8a6305943e98a8db90f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d8f5ce3cb9adf0c72e2ad6089aba02d7a32469c2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/40d7def67841343c10f8642a41031fecbb248bab"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/79d9a000f0220cdaba1682d2a23c0d0c61d620a3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7a18293fd8d8519c2f7a03753bc1583b18e3db69"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87039b83fb7bfd7d0e0499aaa8e6c049906b4d14"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/89b32ccb12ae67e630c6453d778ec30a592a212f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0ff2443fcbb472206d45a5d2a90cc694065804e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d23982ea9aa438f35a8c8a6305943e98a8db90f6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d8f5ce3cb9adf0c72e2ad6089aba02d7a32469c2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"}], "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: ALSA: emux: improve patch ioctl data validation", "id": "2300715", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2300715"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-20", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nALSA: emux: improve patch ioctl data validation\nIn load_data(), make the validation of and skipping over the main info\nblock match that in load_guspatch().\nIn load_guspatch(), add checking that the specified patch length matches\nthe actually supplied data, like load_data() already did.", "A missed validation flaw was found in the Linux Kernel's MIDI sequencer and router support functionality. This issue could allow a local user to crash the system."], "name": "CVE-2024-42097", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "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": "2024-07-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42097\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42097\nhttps://lore.kernel.org/linux-cve-announce/2024072911-CVE-2024-42097-5a6a@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-13T21:06:58.594450+00:00", "updated": "2025-07-13T21:06:58.594525+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}