CVE-2026-74295

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Move the lookup after the helper\nhas accepted the value."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The flaw is reached only through local ALSA control ioctls on /dev/snd/controlC* (SNDRV_CTL_IOCTL_ELEM_WRITE), which invoke hdac_hdmi_set_pin_port_mux(); there is no network, Bluetooth, or physical-input path to this callback.\nAC:L - An attacker with access to the ALSA control device can supply any out-of-range enumerated.item[0] value and reliably trigger the out-of-bounds texts[] read on default kernels without CONFIG_SND_CTL_INPUT_VALIDATION, without races or other uncontrollable conditions.\nPR:L - Exploitation requires local access to the ALSA control device (/dev/snd/controlC*), typically granted to the logged-in desktop user or audio group; no CAP_SYS_ADMIN or real root is required and user namespaces do not gate this path.\nUI:N - Once the attacker has ALSA control-device access, they can issue the ioctl directly to the Pin port Input mux control without requiring any action from another user or victim.\nS:U - The vulnerable Intel HDMI/DP audio codec driver and resulting kernel memory impacts remain within the host kernel security authority and do not cross VM, container, or IOMMU security boundaries.\nC:H - The unchecked enum index performs an out-of-bounds read of e->texts[], loading attacker-chosen adjacent kernel heap memory as a char* before validation rejects the write; per conservative kernel guidance, out-of-bounds reads are scored High.\nI:N - The bug is a read-only out-of-bounds array access with no out-of-bounds write, heap corruption, or attacker-controlled modification; snd_soc_dapm_put_enum_double() rejects invalid values before persisting any mux state change.\nA:H - Attacker-controlled out-of-bounds indices can load texts[] from unmapped addresses and fault the kernel during the pointer fetch; even near-boundary reads are a memory-safety violation treated conservatively as potential denial-of-service on affected Intel HDMI systems."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/soc/codecs/hdac_hdmi.c"], "versions": [{"version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "216336418c007c4b44c650acf2fd3d2de5bb81e8", "status": "affected", "versionType": "git"}, {"version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "bc464a6a9e352daa17b1636c090cf3185710b9a0", "status": "affected", "versionType": "git"}, {"version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "8cbf24714d6b3f553fc959632c9781176a73a9a7", "status": "affected", "versionType": "git"}, {"version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "7f02e9064b6f84e7f93c72f134306271eb4f7de4", "status": "affected", 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"https://git.kernel.org/stable/c/7f02e9064b6f84e7f93c72f134306271eb4f7de4"}, {"url": "https://git.kernel.org/stable/c/9131e4b023e0db5764680034bdc94aeae0b0f33d"}, {"url": "https://git.kernel.org/stable/c/d8961b5c7889b6ecc00f1409d36826df1665df27"}, {"url": "https://git.kernel.org/stable/c/0b08baeccdcf52fad328ad645f5b4fbee04eea34"}], "title": "ASoC: codecs: hdac_hdmi: Validate written enum value", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74295", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T18:52:31.546747Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:31.120Z"}}]}}

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no CAP_SYS_ADMIN or real root is required and user namespaces do not gate this path.\nUI:N - Once the attacker has ALSA control-device access, they can issue the ioctl directly to the Pin port Input mux control without requiring any action from another user or victim.\nS:U - The vulnerable Intel HDMI/DP audio codec driver and resulting kernel memory impacts remain within the host kernel security authority and do not cross VM, container, or IOMMU security boundaries.\nC:H - The unchecked enum index performs an out-of-bounds read of e->texts[], loading attacker-chosen adjacent kernel heap memory as a char* before validation rejects the write; per conservative kernel guidance, out-of-bounds reads are scored High.\nI:N - The bug is a read-only out-of-bounds array access with no out-of-bounds write, heap corruption, or attacker-controlled modification; snd_soc_dapm_put_enum_double() rejects invalid values before persisting any mux state change.\nA:H - Attacker-controlled out-of-bounds indices can load texts[] from unmapped addresses and fault the kernel during the pointer fetch; even near-boundary reads are a memory-safety violation treated conservatively as potential denial-of-service on affected Intel HDMI systems."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "216336418c007c4b44c650acf2fd3d2de5bb81e8", "versionType": "git"}, {"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "bc464a6a9e352daa17b1636c090cf3185710b9a0", "versionType": "git"}, {"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "8cbf24714d6b3f553fc959632c9781176a73a9a7", "versionType": "git"}, {"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "7f02e9064b6f84e7f93c72f134306271eb4f7de4", "versionType": "git"}, {"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "9131e4b023e0db5764680034bdc94aeae0b0f33d", "versionType": "git"}, {"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "d8961b5c7889b6ecc00f1409d36826df1665df27", "versionType": "git"}, {"status": "affected", "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f", "lessThan": "0b08baeccdcf52fad328ad645f5b4fbee04eea34", "versionType": "git"}], "programFiles": ["sound/soc/codecs/hdac_hdmi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.6"}, {"status": "unaffected", "version": "0", "lessThan": "4.6", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "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": ["sound/soc/codecs/hdac_hdmi.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/216336418c007c4b44c650acf2fd3d2de5bb81e8"}, {"url": "https://git.kernel.org/stable/c/bc464a6a9e352daa17b1636c090cf3185710b9a0"}, {"url": "https://git.kernel.org/stable/c/8cbf24714d6b3f553fc959632c9781176a73a9a7"}, {"url": "https://git.kernel.org/stable/c/7f02e9064b6f84e7f93c72f134306271eb4f7de4"}, {"url": "https://git.kernel.org/stable/c/9131e4b023e0db5764680034bdc94aeae0b0f33d"}, {"url": "https://git.kernel.org/stable/c/d8961b5c7889b6ecc00f1409d36826df1665df27"}, {"url": "https://git.kernel.org/stable/c/0b08baeccdcf52fad328ad645f5b4fbee04eea34"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: hdac_hdmi: Validate written enum value\n\nhdac_hdmi_set_pin_port_mux() uses the written enum value to index the\ntexts array before calling snd_soc_dapm_put_enum_double(), which validates\nthat the value is within the enum item range.\n\nAn out-of-range value can therefore make the driver read past the texts\narray before the helper rejects the write. Move the lookup after the helper\nhas accepted the value."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.97", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "4.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "4.6"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:45:33.387Z"}}}, "cveMetadata": {"cveId": "CVE-2026-74295", "state": "PUBLISHED", "dateUpdated": "2026-10-16T18:55:31.120Z", "dateReserved": "2026-08-15T05:44:03.882Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:58:00.123Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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{"bugzilla": {"description": "kernel: ASoC: codecs: hdac_hdmi: Validate written enum value", "id": "2516910", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516910"}, "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: codecs: hdac_hdmi: Validate written enum value\nhdac_hdmi_set_pin_port_mux() uses the written enum value to index the\ntexts array before calling snd_soc_dapm_put_enum_double(), which validates\nthat the value is within the enum item range.\nAn out-of-range value can therefore make the driver read past the texts\narray before the helper rejects the write. Move the lookup after the helper\nhas accepted the value.", "A flaw was found in the Linux kernel, specifically within the ASoC hdac_hdmi audio codec driver. This vulnerability occurs because the driver does not properly validate an input value used to access an internal data structure. A local attacker could provide a specially crafted input, causing the driver to read beyond its intended memory boundaries. This out-of-bounds read could potentially expose sensitive information from the system's memory."], "name": "CVE-2026-74295", "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": "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": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74295\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74295\nhttps://lore.kernel.org/linux-cve-announce/2026081548-CVE-2026-74295-f398@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,216336418c007c4b44c650acf2fd3d2de5bb81e8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,bc464a6a9e352daa17b1636c090cf3185710b9a0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,8cbf24714d6b3f553fc959632c9781176a73a9a7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,7f02e9064b6f84e7f93c72f134306271eb4f7de4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,9131e4b023e0db5764680034bdc94aeae0b0f33d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,d8961b5c7889b6ecc00f1409d36826df1665df27)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4a3478debf36c0aa0cf0860daec245b13cd4448f,0b08baeccdcf52fad328ad645f5b4fbee04eea34)"}}], "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": "4.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.212,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.178,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.145,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.97,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.40,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.5,7.1.*]"}}, {"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": "2026-08-15T12:45:06.850360+00:00", "updated": "2026-08-22T03:00:12.257021+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}