{"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","x_generator":{"engine":"bippy-1.2.0"}}}}