CVE-2026-72488

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function parameter) using a for-loop before\nadding them.\n\nNo functional changes apart from this fix."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Vulnerable sdw_add_element_group_count is reached only via local ALSA PCM ioctl (SNDRV_PCM_IOCTL_PREPARE/HW_PARAMS) on /dev/snd/pcmC*D*, through asoc_sdw_prepare -> sdw_prepare_stream -> sdw_compute_params on Intel SoundWire machines; no network or adjacent-network entry point exists.\nAC:L - The off-by-one loop (i <= num when num==group->count) deterministically reads one slot past the rates/lanes arrays whenever a second distinct rate/lane group entry is added, which an attacker can trigger by preparing SoundWire streams that exercise multilane assignment or multiple active bus runtimes without races or external state.\nPR:L - Exploitation requires only the ability to open and ioctl the ALSA PCM character device (typically granted to unprivileged desktop users via the audio group or logind seat ACLs on Intel SOF/SoundWire laptops); no CAP_SYS_ADMIN, real root, or non-namespace capability is checked on this path.\nUI:N - The attacker's own process issues the PCM prepare/hw_params ioctls that drive bandwidth recomputation; no separate victim must mount filesystems, open files, or take any other action beyond the attacker already having local device access.\nS:U - The out-of-bounds access corrupts/read kernel heap memory within the SoundWire bandwidth allocator in the same kernel security domain; it does not cross VM, container, IOMMU, or sandbox boundaries.\nC:H - When i==group->count the loop compares against group->rates[i] and group->lanes[i] one element beyond the allocated arrays, leaking adjacent kmalloc heap contents; per kernel guidance unbounded out-of-bounds reads in the allocator path warrant High confidentiality impact.\nI:H - Even though the immediate fault is an OOB read, the same loop guards heap-backed dynamic expansion that then writes attacker-influenced rate/lane tuples into rates[]/lanes[]; adjacent-heap corruption from the read plus controlled follow-on writes is leverageable for integrity compromise consistent with similar SoundWire CVE scoring.\nA:H - The out-of-bounds read can fault on unmapped adjacent slab memory or trip KASAN/hardened checks (as syzkaller reported), producing kernel oops/panic and aborting stream prepare, leaving audio/DSP subsystems unavailable on affected Intel SoundWire platforms."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/soundwire/generic_bandwidth_allocation.c"], "versions": [{"version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "lessThan": "c35474cf6a7d0891ebebbeda08ce34b602885ab6", "status": "affected", "versionType": "git"}, {"version": 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"https://git.kernel.org/stable/c/5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5"}, {"url": "https://git.kernel.org/stable/c/a454f61747c97e2eadaa7a35ffc1f4b1645c6a53"}, {"url": "https://git.kernel.org/stable/c/e483a406a23a92d5202e8d324f206e127eef48ff"}, {"url": "https://git.kernel.org/stable/c/f772ff5a0e6758fd412803c09e03ba3bca5f5878"}], "title": "soundwire: fix bug in sdw_add_element_group_count found by syzkaller", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72488", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-16T18:50:47.454898Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:26.364Z"}}]}}

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no network or adjacent-network entry point exists.\nAC:L - The off-by-one loop (i <= num when num==group->count) deterministically reads one slot past the rates/lanes arrays whenever a second distinct rate/lane group entry is added, which an attacker can trigger by preparing SoundWire streams that exercise multilane assignment or multiple active bus runtimes without races or external state.\nPR:L - Exploitation requires only the ability to open and ioctl the ALSA PCM character device (typically granted to unprivileged desktop users via the audio group or logind seat ACLs on Intel SOF/SoundWire laptops); no CAP_SYS_ADMIN, real root, or non-namespace capability is checked on this path.\nUI:N - The attacker's own process issues the PCM prepare/hw_params ioctls that drive bandwidth recomputation; no separate victim must mount filesystems, open files, or take any other action beyond the attacker already having local device access.\nS:U - The out-of-bounds access corrupts/read kernel heap memory within the SoundWire bandwidth allocator in the same kernel security domain; it does not cross VM, container, IOMMU, or sandbox boundaries.\nC:H - When i==group->count the loop compares against group->rates[i] and group->lanes[i] one element beyond the allocated arrays, leaking adjacent kmalloc heap contents; per kernel guidance unbounded out-of-bounds reads in the allocator path warrant High confidentiality impact.\nI:H - Even though the immediate fault is an OOB read, the same loop guards heap-backed dynamic expansion that then writes attacker-influenced rate/lane tuples into rates[]/lanes[]; adjacent-heap corruption from the read plus controlled follow-on writes is leverageable for integrity compromise consistent with similar SoundWire CVE scoring.\nA:H - The out-of-bounds read can fault on unmapped adjacent slab memory or trip KASAN/hardened checks (as syzkaller reported), producing kernel oops/panic and aborting stream prepare, leaving audio/DSP subsystems unavailable on affected Intel SoundWire platforms."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "lessThan": "a2275dce05e6d1cce69bf68f23ea7a63c0c54bae", "versionType": "git"}, {"status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "lessThan": "5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5", "versionType": "git"}, {"status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "lessThan": "a454f61747c97e2eadaa7a35ffc1f4b1645c6a53", "versionType": "git"}, {"status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "lessThan": "e483a406a23a92d5202e8d324f206e127eef48ff", "versionType": "git"}, {"status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "lessThan": "f772ff5a0e6758fd412803c09e03ba3bca5f5878", "versionType": "git"}], "programFiles": ["drivers/soundwire/generic_bandwidth_allocation.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"status": "unaffected", "version": "0", "lessThan": "5.10", "versionType": "semver"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/soundwire/generic_bandwidth_allocation.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/a2275dce05e6d1cce69bf68f23ea7a63c0c54bae"}, {"url": "https://git.kernel.org/stable/c/5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5"}, {"url": "https://git.kernel.org/stable/c/a454f61747c97e2eadaa7a35ffc1f4b1645c6a53"}, {"url": "https://git.kernel.org/stable/c/e483a406a23a92d5202e8d324f206e127eef48ff"}, {"url": "https://git.kernel.org/stable/c/f772ff5a0e6758fd412803c09e03ba3bca5f5878"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoundwire: fix bug in sdw_add_element_group_count found by syzkaller\n\nThe original implementation caused an out-of-bounds memory access\nin the sdw_add_element_group_count for-loop when i == num.\n\nfor (i = 0; i <= num; i++) {\n if (rate == group->rates[i] && lane == group->lanes[i])\n ...\n\nTo fix this error, the function now checks for existing rate/lane\nentries in the group(a function parameter) using a for-loop before\nadding them.\n\nNo functional changes apart from this fix."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.160", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.114", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "5.10"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:45:00.576Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72488", "state": "PUBLISHED", "dateUpdated": "2026-10-21T12:45:00.576Z", "dateReserved": "2026-08-09T03:40:39.936Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:57:24.146Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/soundwire/generic_bandwidth_allocation.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "c35474cf6a7d0891ebebbeda08ce34b602885ab6", "status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "versionType": "git"}, {"lessThan": "a2275dce05e6d1cce69bf68f23ea7a63c0c54bae", "status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "versionType": "git"}, {"lessThan": "5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5", "status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "versionType": "git"}, {"lessThan": "a454f61747c97e2eadaa7a35ffc1f4b1645c6a53", "status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "versionType": "git"}, {"lessThan": "e483a406a23a92d5202e8d324f206e127eef48ff", "status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "versionType": "git"}, {"lessThan": "f772ff5a0e6758fd412803c09e03ba3bca5f5878", "status": "affected", "version": "9026118f20e28f202dab34f219bbb831ffb8c4dc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/soundwire/generic_bandwidth_allocation.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"lessThan": "5.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoundwire: fix bug in sdw_add_element_group_count found by syzkaller\n\nThe original implementation caused an out-of-bounds memory access\nin the sdw_add_element_group_count for-loop when i == num.\n\nfor (i = 0; i <= num; i++) {\n if (rate == group->rates[i] && lane == group->lanes[i])\n ...\n\nTo fix this error, the function now checks for existing rate/lane\nentries in the group(a function parameter) using a for-loop before\nadding them.\n\nNo functional changes apart from this fix."}], "id": "CVE-2026-72488", "lastModified": "2026-10-30T13:19:53.227", "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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72488", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:50:47.454898Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:22:23.087", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5c3ce6d3559ce57e6c3108aa9ecf7b32764188c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a2275dce05e6d1cce69bf68f23ea7a63c0c54bae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a454f61747c97e2eadaa7a35ffc1f4b1645c6a53"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c35474cf6a7d0891ebebbeda08ce34b602885ab6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e483a406a23a92d5202e8d324f206e127eef48ff"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f772ff5a0e6758fd412803c09e03ba3bca5f5878"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: soundwire: fix bug in sdw_add_element_group_count found by syzkaller", "id": "2516524", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516524"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-1285", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nsoundwire: fix bug in sdw_add_element_group_count found by syzkaller\nThe original implementation caused an out-of-bounds memory access\nin the sdw_add_element_group_count for-loop when i == num.\nfor (i = 0; i <= num; i++) {\nif (rate == group->rates[i] && lane == group->lanes[i])\n...\nTo fix this error, the function now checks for existing rate/lane\nentries in the group(a function parameter) using a for-loop before\nadding them.\nNo functional changes apart from this fix.", "A flaw was found in the Linux kernel's soundwire component. An out-of-bounds memory access can occur within the `sdw_add_element_group_count` function due to an incorrect loop condition. This error allows the system to attempt to access memory beyond its allocated buffer. Such an issue could lead to system instability or unexpected behavior."], "name": "CVE-2026-72488", "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72488\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72488\nhttps://lore.kernel.org/linux-cve-announce/2026081538-CVE-2026-72488-09be@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9026118f20e28f202dab34f219bbb831ffb8c4dc,a454f61747c97e2eadaa7a35ffc1f4b1645c6a53)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9026118f20e28f202dab34f219bbb831ffb8c4dc,e483a406a23a92d5202e8d324f206e127eef48ff)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[9026118f20e28f202dab34f219bbb831ffb8c4dc,f772ff5a0e6758fd412803c09e03ba3bca5f5878)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T18:45:03.368609+00:00", "updated": "2026-08-22T06:00:11.345501+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}