{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74333", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.885Z", "datePublished": "2026-08-15T05:58:25.781Z", "dateUpdated": "2026-08-17T05:46:00.787Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:46:00.787Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: amd: acp-sdw-legacy: Bound DAI link iteration\n\ncreate_sdw_dailinks() walks soc_dais until it finds an entry with\ninitialised cleared, but soc_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\n\nThis was reported by KASAN:\n\n BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach]\n Read of size 1\n\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The flaw is only reachable during local AMD ACP PCI/platform driver probe (snd_acp63_probe -> acp63_machine_register -> mc_probe); there is no network, Bluetooth, or userspace syscall/ioctl path to create_sdw_dailinks().\nAC:L - On affected AMD SoundWire legacy laptops, when every soc_dais slot is marked initialised the OOB read is deterministic at each boot/probe; KASAN already hit this in mc_probe on real hardware, so no attacker-controlled race or rare timing is required.\nPR:N - Exploitation needs no credentials: mc_probe runs automatically during pre-login kernel initialization when ACPI/PCI matches an amd_sdw machine table on built-in SoundWire hardware, before any authenticated user session exists.\nUI:N - No victim interaction is required beyond normal system boot on vulnerable AMD SoundWire hardware; the bug triggers during driver initialization, not from opening audio devices or mounting filesystems.\nS:U - Impact is confined to kernel heap corruption and crash/privilege escalation within the host kernel; this is not a VM escape, IOMMU bypass, or cross-security-authority boundary.\nC:H - The bug is a slab out-of-bounds read (KASAN: read of size 1) past the soc_dais array, which can disclose adjacent kernel heap objects and satisfies the guidance to rate out-of-bounds reads as High.\nI:H - After the OOB initialised check, the loop can treat adjacent slab memory as a valid asoc_sdw_dailink and call create_sdw_dailink(), corrupting list heads and allocation sizes and enabling further heap corruption or control-flow hijack.\nA:H - KASAN reported slab-out-of-bounds in mc_probe during audio card registration; continued iteration over corrupt structures can kernel oops/panic at boot, denying availability to all users on the machine."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/soc/amd/acp/acp-sdw-legacy-mach.c"], "versions": [{"version": "2981d9b0789c44b7375e7d599caf71bd843afc9e", "lessThan": "1279bdab5fa1f28c168e54215db506e87c6fac1e", "status": "affected", "versionType": "git"}, {"version": "2981d9b0789c44b7375e7d599caf71bd843afc9e", "lessThan": "0230471eef5902207516851dcd47c559571dded2", "status": "affected", "versionType": "git"}, {"version": "2981d9b0789c44b7375e7d599caf71bd843afc9e", "lessThan": "d49ecdf327cc91062d2f80996a163cf65fda1e60", "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/amd/acp/acp-sdw-legacy-mach.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "6.13", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1279bdab5fa1f28c168e54215db506e87c6fac1e"}, {"url": "https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2"}, {"url": "https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60"}], "title": "ASoC: amd: acp-sdw-legacy: Bound DAI link iteration", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["sound/soc/amd/acp/acp-sdw-legacy-mach.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "1279bdab5fa1f28c168e54215db506e87c6fac1e", "status": "affected", "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e", "versionType": "git"}, {"lessThan": "0230471eef5902207516851dcd47c559571dded2", "status": "affected", "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e", "versionType": "git"}, {"lessThan": "d49ecdf327cc91062d2f80996a163cf65fda1e60", "status": "affected", "version": "2981d9b0789c44b7375e7d599caf71bd843afc9e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["sound/soc/amd/acp/acp-sdw-legacy-mach.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"lessThan": "6.13", "status": "unaffected", "version": "0", "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\nASoC: amd: acp-sdw-legacy: Bound DAI link iteration\n\ncreate_sdw_dailinks() walks soc_dais until it finds an entry with\ninitialised cleared, but soc_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\n\nThis was reported by KASAN:\n\n BUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach]\n Read of size 1\n\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array."}], "id": "CVE-2026-74333", "lastModified": "2026-08-17T06:19:27.787", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-08-15T06:22:34.167", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0230471eef5902207516851dcd47c559571dded2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1279bdab5fa1f28c168e54215db506e87c6fac1e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d49ecdf327cc91062d2f80996a163cf65fda1e60"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: ASoC: amd: acp-sdw-legacy: Bound DAI link iteration", "id": "2516831", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516831"}, "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-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nASoC: amd: acp-sdw-legacy: Bound DAI link iteration\ncreate_sdw_dailinks() walks soc_dais until it finds an entry with\ninitialised cleared, but soc_dais is allocated with exactly num_ends\nentries. If all entries are initialised, the loop reads past the end of\nthe array.\nThis was reported by KASAN:\nBUG: KASAN: slab-out-of-bounds in mc_probe+0x26b3/0x2774 [snd_acp_sdw_legacy_mach]\nRead of size 1\nPass the allocated entry count to create_sdw_dailinks() and stop before\nreading past the array.", "A flaw was found in the Linux kernel's ASoC AMD ACP SoundWire (SDW) legacy driver. The `create_sdw_dailinks` function incorrectly iterates over an array, causing it to read beyond its allocated memory boundary. This out-of-bounds read can lead to memory corruption, potentially impacting system stability."], "name": "CVE-2026-74333", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74333\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74333\nhttps://lore.kernel.org/linux-cve-announce/2026081556-CVE-2026-74333-6d02@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2981d9b0789c44b7375e7d599caf71bd843afc9e,1279bdab5fa1f28c168e54215db506e87c6fac1e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2981d9b0789c44b7375e7d599caf71bd843afc9e,0230471eef5902207516851dcd47c559571dded2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2981d9b0789c44b7375e7d599caf71bd843afc9e,d49ecdf327cc91062d2f80996a163cf65fda1e60)"}}], "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": "6.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,7.0.0)"}}, {"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": "2026-08-15T17:15:03.020729+00:00", "updated": "2026-08-17T13:15:04.847834+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-125"]}