# CVE-2024-42088: linux: In the Linux kernel, the following vulnerability has been resolved:  ASoC: mediatek: mt8195: Add platform entry for E...

CVE-2024-42088 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-42088, released July 29, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-42088
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 29, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  ASoC: mediatek: mt8195: Add platform entry for ETDM1_OUT_BE dai link  Commit e70b8dd26711 ("ASoC: mediatek: mt8195: Remove afe-dai component and rework codec link") removed the codec entry for the ETDM1_OUT_BE dai link entirely instead of replacing it with COMP_EMPTY(). This worked by accident as the remaining COMP_EMPTY() platform entry became the codec entry, and the platform entry became completely empty, effectively the same as COMP_DUMMY() since snd_soc_fill_dummy_dai() doesn't do anything for platform entries.  This causes a KASAN out-of-bounds warning in mtk_soundcard_common_probe() in sound/soc/mediatek/common/mtk-soundcard-driver.c:  	for_each_card_prelinks(card, i, dai_link) { 		if (adsp_node && !strncmp(dai_link->name, "AFE_SOF", strlen("AFE_SOF"))) 			dai_link->platforms->of_node = adsp_node; 		else if (!dai_link->platforms->name && !dai_link->platforms->of_node) 			dai_link->platforms->of_node = platform_node; 	}  where the code expects the platforms array to have space for at least one entry.  Add an COMP_EMPTY() entry so that dai_link->platforms has space.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.9.8-1 | [DEBIAN-CVE-2024-42088](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42088.md) | Jul 29, 2024 |
| Linux | linux Debian 14 | 6.9.8-1 | [DEBIAN-CVE-2024-42088](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42088.md) | Jul 29, 2024 |

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