Vulnerability in Kernel (CVE-2023-53666)

Summary

Vulnerability in Kernel (CVE-2023-53666). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 5.15.123, 6.1.42, 6.4.7 or later.

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

ASoC: codecs: wcd938x: fix missing mbhc init error handling

MBHC initialisation can fail so add the missing error handling to avoid
dereferencing an error pointer when later configuring the jack:

Unable to handle kernel paging request at virtual address fffffffffffffff8

pc : wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc]
lr : wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x]

Call trace:
 wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc]
 wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x]
 snd_soc_component_set_jack+0x28/0x8c [snd_soc_core]
 qcom_snd_wcd_jack_setup+0x7c/0x19c [snd_soc_qcom_common]
 sc8280xp_snd_init+0x20/0x2c [snd_soc_sc8280xp]
 snd_soc_link_init+0x28/0x90 [snd_soc_core]
 snd_soc_bind_card+0x628/0xbfc [snd_soc_core]
 snd_soc_register_card+0xec/0x104 [snd_soc_core]
 devm_snd_soc_register_card+0x4c/0xa4 [snd_soc_core]
 sc8280xp_platform_probe+0xf0/0x108 [snd_soc_sc8280xp]

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2023-53666 has been found in Kernel.
Risk of unauthorized operations or information disclosure.
What to do: upgrade Kernel to 5.15.123, 6.1.42, 6.4.7 or later.
If unsure, ask your IT team or search "Kernel CVE-2023-53666" on the vendor's site.

CVE-2023-53666 (Kernel)
Patched: 5.15.123, 6.1.42, 6.4.7 — apply immediately
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

A vulnerability (unclassified) exists in Kernel.

📍 Affected scope

Check the vendor advisory for the affected versions of Kernel.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 5.15.123, 6.1.42, 6.4.7.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Kernel' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

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

1
Identify exposure identify
```
grep -r 'Kernel' . | 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 Kernel を grep し、稼働しているサービス・バージョンを把握する。
2
Apply patch patch
```
Upgrade Kernel to 5.15.123, 6.1.42, 6.4.7
```
ステージング環境で 5.15.123, 6.1.42, 6.4.7 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
3
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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"5.15.123"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.42"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.4.7"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2023-53666 linux Fixed in: 6.1.52-1
Ubuntu UBUNTU-CVE-2023-53666 linux-hwe-edge