{"id":"CVE-2026-74294","state":"PUBLISHED","title":"ASoC: meson: aiu: Validate written enum values","description":"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.","publishedAt":"2026-08-15T05:57:59.508Z","updatedAt":"2026-10-16T18:55:30.979Z","severity":{"score":7.3,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"91797708f99e4a910ab019760069c0a7e00a6fc0","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"90703664dbc5a4bf3d84f649404318f3cafdbe69","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"8a6d6735e7c02e88841cca1497ff3d8089f2ef24","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"96f5b92d958bc34500500f29fab8e0b908f25397","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"0965892cc486ca554d72eeb62d85ccf8d0137a5a","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"d65adf85477247be04ac86886f8edfaa047b5d4a","versionType":"git"}],"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"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"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"]}],"references":["https://git.kernel.org/stable/c/91797708f99e4a910ab019760069c0a7e00a6fc0","https://git.kernel.org/stable/c/90703664dbc5a4bf3d84f649404318f3cafdbe69","https://git.kernel.org/stable/c/8a6d6735e7c02e88841cca1497ff3d8089f2ef24","https://git.kernel.org/stable/c/96f5b92d958bc34500500f29fab8e0b908f25397","https://git.kernel.org/stable/c/0965892cc486ca554d72eeb62d85ccf8d0137a5a","https://git.kernel.org/stable/c/d65adf85477247be04ac86886f8edfaa047b5d4a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74294.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74294","state":"PUBLISHED","datePublished":"2026-08-15T05:57:59.508Z","dateUpdated":"2026-10-16T18:55:30.979Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.882Z"},"containers":{"cna":{"title":"ASoC: meson: aiu: Validate written enum values","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"91797708f99e4a910ab019760069c0a7e00a6fc0","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"90703664dbc5a4bf3d84f649404318f3cafdbe69","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"8a6d6735e7c02e88841cca1497ff3d8089f2ef24","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"96f5b92d958bc34500500f29fab8e0b908f25397","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"0965892cc486ca554d72eeb62d85ccf8d0137a5a","versionType":"git"},{"version":"b82b734c0e9a75e1b956214ac523a8eb590f51f3","status":"affected","lessThan":"d65adf85477247be04ac86886f8edfaa047b5d4a","versionType":"git"}],"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"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.7","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"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"]}],"references":[{"url":"https://git.kernel.org/stable/c/91797708f99e4a910ab019760069c0a7e00a6fc0"},{"url":"https://git.kernel.org/stable/c/90703664dbc5a4bf3d84f649404318f3cafdbe69"},{"url":"https://git.kernel.org/stable/c/8a6d6735e7c02e88841cca1497ff3d8089f2ef24"},{"url":"https://git.kernel.org/stable/c/96f5b92d958bc34500500f29fab8e0b908f25397"},{"url":"https://git.kernel.org/stable/c/0965892cc486ca554d72eeb62d85ccf8d0137a5a"},{"url":"https://git.kernel.org/stable/c/d65adf85477247be04ac86886f8edfaa047b5d4a"}],"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 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