{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80583","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.769Z","datePublished":"2026-08-26T14:37:39.704Z","dateUpdated":"2026-08-27T12:40:21.902Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-27T12:40:21.902Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: lpass-tx-macro: Fix enum kcontrol accesses\n\nThe \"DEC0 MODE\" to \"DEC7 MODE\" controls are enumerated, but\ntx_macro_dec_mode_get() and tx_macro_dec_mode_put() access their\nvalue through ucontrol->value.integer.value[0] (a long) instead of\nucontrol->value.enumerated.item[0] (an unsigned int).\n\nThis same pattern was fixed in the sibling drivers by\ncommit bcfe5f76cc40 (\"ASoC: codecs: rx-macro: fix accessing array\nout of bounds for enum type\") and\ncommit 0ea5eff7c606 (\"ASoC: codecs: va-macro: fix accessing array\nout of bounds for enum type\"), but tx-macro was missed.\n\nOn 64-bit kernels built with CONFIG_SND_CTL_DEBUG, the elem value\nsanity check catches the 4 bytes written past the enumerated item\nand every read of these controls fails with -EINVAL:\n\n  snd-sm8250 sound: control 2:0:0:DEC0 MODE:0: access overflow"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - Exploitation requires local SNDRV_CTL_IOCTL_ELEM_READ or SNDRV_CTL_IOCTL_ELEM_WRITE on /dev/snd/controlC* through snd_ctl_ioctl() to tx_macro_dec_mode_get/put(); the Qualcomm LPASS TX macro audio codec driver has no network, Bluetooth, or physical-input attack path.\nAC:L - A single ioctl targeting DEC0-7 MODE deterministically triggers the 8-byte integer access against a 4-byte enumerated field on 64-bit kernels; the attacker controls both sides with no race, timing, or memory-layout dependency.\nPR:L - snd_ctl_open() performs no capability check; exploitation needs only local access to /dev/snd/controlC*, typically granted to the audio group on Qualcomm sc8250/sc8280 Chromebooks and Linux dev boards where this driver is present, not real root.\nUI:N - Once the attacker has ALSA control-device access they issue elem read/write ioctls themselves to DEC MODE controls; no separate victim action such as plugging hardware or opening a file is required.\nS:U - The out-of-bounds ctl-value access and resulting microphone ADC mode corruption remain within the host kernel and Qualcomm audio subsystem; there is no crossing of VM, container, or IOMMU security boundaries.\nC:H - tx_macro_dec_mode_put() reads ucontrol->value.integer.value[0] (8 bytes) for ENUM controls, performing a 4-byte out-of-bounds read past enumerated.item[0]; per kernel CVSS guidance out-of-bounds reads are scored High even when bounded.\nI:H - tx_macro_dec_mode_get() writes 8 bytes via integer.value[0], overflowing enumerated.item[0] by 4 bytes in kernel memory; put stores values into tx->dec_mode[] that program CDC_TXn_ADC_MODE on phone/Chromebook microphones, constituting memory corruption scored High.\nA:H - With CONFIG_SND_CTL_DEBUG every DEC0-7 MODE read fails with -EINVAL (access overflow), denying microphone ADC queries; on production 64-bit aarch64 builds the 4-byte union overrun corrupts ctl values and can break Qualcomm LPASS TX audio capture availability."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["sound/soc/codecs/lpass-tx-macro.c"],"versions":[{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"dbc81b518f6936131bfd858be71cd4295136809c","status":"affected","versionType":"git"},{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"f84f2c81d792cf1e65571108a3bdd2c29e09e995","status":"affected","versionType":"git"},{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"48b76879f5bfc8584b99052510ac645c6ade8d2b","status":"affected","versionType":"git"},{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"2ed3601e9db08fbdb071bd3d7bd8f115d6d871b0","status":"affected","versionType":"git"},{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"b6baab796d11fb84c0e9444ffca91af5eab22c25","status":"affected","versionType":"git"},{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"3ee3c26ceee562079596abc9bc3307dd56dab4ed","status":"affected","versionType":"git"},{"version":"c39667ddcfc516fee084e449179d54430a558298","lessThan":"1ba381759e45d5d0442452cfa5c42e836191a568","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/codecs/lpass-tx-macro.c"],"versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"5.15.218","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.185","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.154","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.106","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.47","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.10","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":"5.12","versionEndExcluding":"5.15.218"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.1.185"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.6.154"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.12.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"6.18.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.1.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/dbc81b518f6936131bfd858be71cd4295136809c"},{"url":"https://git.kernel.org/stable/c/f84f2c81d792cf1e65571108a3bdd2c29e09e995"},{"url":"https://git.kernel.org/stable/c/48b76879f5bfc8584b99052510ac645c6ade8d2b"},{"url":"https://git.kernel.org/stable/c/2ed3601e9db08fbdb071bd3d7bd8f115d6d871b0"},{"url":"https://git.kernel.org/stable/c/b6baab796d11fb84c0e9444ffca91af5eab22c25"},{"url":"https://git.kernel.org/stable/c/3ee3c26ceee562079596abc9bc3307dd56dab4ed"},{"url":"https://git.kernel.org/stable/c/1ba381759e45d5d0442452cfa5c42e836191a568"}],"title":"ASoC: codecs: lpass-tx-macro: Fix enum kcontrol accesses","x_generator":{"engine":"bippy-1.2.0"}}}}