Vulnerability in Kernel (CVE-2024-26672)

Summary

Vulnerability in Kernel (CVE-2024-26672). Confidential information can be exposed externally. Mitigation: upgrade to 6.7.4 or later.

Original description

The description as published by the source.

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

drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'

Fixes the below:

drivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check 'mca_funcs' (see line 368)

357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev,
enum amdgpu_mca_error_type type,
358 int idx, struct mca_bank_entry *entry)
359 {
360 const struct amdgpu_mca_smu_funcs *mca_funcs =
adev->mca.mca_funcs;
361 int count;
362
363 switch (type) {
364 case AMDGPU_MCA_ERROR_TYPE_UE:
365 count = mca_funcs->max_ue_count;

mca_funcs is dereferenced here.

366 break;
367 case AMDGPU_MCA_ERROR_TYPE_CE:
368 count = mca_funcs->max_ce_count;

mca_funcs is dereferenced here.

369 break;
370 default:
371 return -EINVAL;
372 }
373
374 if (idx >= count)
375 return -EINVAL;
376
377 if (mca_funcs && mca_funcs->mca_get_mca_entry)
^^^^^^^^^

Checked too late!

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-2024-26672 has been found in Kernel.
Confidential information can be exposed externally.
What to do: upgrade Kernel to 6.7.4 or later.
If unsure, ask your IT team or search "Kernel CVE-2024-26672" on the vendor's site.

CVE-2024-26672 (Kernel)
Attack vector: local / no user interaction
Patched: 6.7.4 — 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: ?. Confidential information can be exposed externally.

🔧 How to fix

Update to 6.7.4.

🛡️ 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 6.7.4
```
ステージング環境で 6.7.4 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":"4.2.0"},{"fixed":"6.7.4"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2024-26672 linux
Ubuntu UBUNTU-CVE-2024-26672 linux