{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-74294",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-15T05:44:03.882Z",
        "datePublished": "2026-08-15T05:57:59.508Z",
        "dateUpdated": "2026-08-17T05:45:32.272Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T05:45:32.272Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: meson: aiu: Validate written enum values\n\nThe AIU HDMI and internal codec mux put callbacks use the written enum\nvalue with snd_soc_enum_item_to_val() before checking whether the value is\nvalid for the enumeration.\n\nReject out-of-range values before converting the enum item, matching the\nvalidation already done by the G12A HDMI and internal codec mux controls."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                        "baseScore": 7.3,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - Exploitation requires issuing SNDRV_CTL_IOCTL_ELEM_WRITE against /dev/snd/controlC* on a Meson system with the AIU driver loaded; there is no network, adjacent-radio, or physical-device code path to the vulnerable mux put callbacks.\nAC:L - An attacker who can open the ALSA control device can reliably supply any out-of-range enumerated.item[0] value and trigger the bug on demand; no race, special memory layout, or other attacker-uncontrollable precondition is required.\nPR:L - On typical Linux-based Amlogic/Meson deployments (TV boxes, Kodi/SBC boards), unprivileged local users in the audio group can open the ALSA control device and write mixer controls without real root in the init namespace.\nUI:N - No victim interaction is required beyond the attacker opening /dev/snd/controlC* and writing the HDMI Source or ACodec Source enum control; no mount, playback, or other user action is needed.\nS:U - Impact is confined to the kernel audio subsystem on the local host; it does not cross VM, container, IOMMU, or other security boundaries into a different authority.\nC:H - Out-of-range mux values make snd_soc_dapm_mux_update_power() index past e->texts[] and pass the resulting pointer to strcmp(), causing an out-of-bounds kernel memory read that can disclose adjacent kernel data.\nI:L - The bug can force limited integrity changes via FIELD_PREP-masked AIU MMIO mux register writes and DAPM route reconnections, but it does not provide arbitrary kernel memory write or code-execution primitives.\nA:H - strcmp() on a pointer obtained from out-of-bounds e->texts[mux] can dereference invalid kernel addresses and trigger a kernel oops or panic, causing complete local audio/subsystem denial of service."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/soc/meson/aiu-acodec-ctrl.c",
                        "sound/soc/meson/aiu-codec-ctrl.c"
                    ],
                    "versions": [
                        {
                            "version": "b82b734c0e9a75e1b956214ac523a8eb590f51f3",
                            "lessThan": "0965892cc486ca554d72eeb62d85ccf8d0137a5a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b82b734c0e9a75e1b956214ac523a8eb590f51f3",
                            "lessThan": "d65adf85477247be04ac86886f8edfaa047b5d4a",
                            "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/meson/aiu-acodec-ctrl.c",
                        "sound/soc/meson/aiu-codec-ctrl.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "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": "5.7",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0965892cc486ca554d72eeb62d85ccf8d0137a5a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d65adf85477247be04ac86886f8edfaa047b5d4a"
                }
            ],
            "title": "ASoC: meson: aiu: Validate written enum values",
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                "engine": "bippy-1.2.0"
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}