Vulnerability in c (CVE-2024-42088, CVSS 7.3)

Summary

vulnerability in c (CVE-2024-42088). Successful exploitation can lead to full system takeover.

Original description

The description as published by the source.

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.

Source: NIST National Vulnerability Database NVD GitHub Advisory

AI summary

Written by an external AI model and may contain mistakes. Check the original description and references below before acting on it.

A vulnerability tracked as CVE-2024-42088 has been found in c.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2024-42088" on the vendor's site.

CVE-2024-42088 (c) — CWE-129 / CVSS v3 7.8
Attack vector: local / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

LinuxカーネルのMediatek mt8195向けのASoCでETDM1_OUT_BE daiリンクのプラットフォームエントリが不足。

📍 Affected scope

Mediatekのmt8195サウンドカードドライバ内のdaiリンク設定。

🔥 Severity

KASANによる境界外アクセスが発生し、解析やデバッグが必要。

🔧 How to fix

dai_link->platformsにCOMP_EMPTY()エントリを追加。

🛡️ Workaround

情報なし

🔍 Detection

KASAN警告を監視して問題を特定。

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
grep -r 'c' . | grep -v node_modules
```
リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で c を grep し、稼働しているサービス・バージョンを把握する。
7
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2024-42088 linux Fixed in: 6.9.8-1
Ubuntu UBUNTU-CVE-2024-42088 linux-hwe-edge

Vulnerability in c (CVE-2024-42088)

Summary

Original description

AI summary

Response actions

Fix status by distribution

References