Vulnerability in udisks2 (UBUNTU-CVE-2026-7867)

Summary

Vulnerability in udisks2 (UBUNTU-CVE-2026-7867). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 2.10.1-6ubuntu1.5 or later.

Original description

The description as published by the source.

A flaw was found in udisks2. A local attacker with an active console session can exploit insufficient authorization checking on the 'as-user' option in the org.freedesktop.UDisks2.Filesystem.Mount() D-Bus method. This allows the attacker to spoof the 'as-user' parameter, mounting filesystems on behalf of arbitrary users, including privileged accounts. This can lead to local privilege escalation through mount point injection and manipulation of the mount namespace visible to privileged users.

Source: OSV.dev (Open Source Vulnerabilities) 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 UBUNTU-CVE-2026-7867 has been found in udisks2.
Successful exploitation can lead to full system takeover.
What to do: upgrade udisks2 to 2.10.1-6ubuntu1.5 or later.
If unsure, ask your IT team or search "udisks2 UBUNTU-CVE-2026-7867" on the vendor's site.

UBUNTU-CVE-2026-7867 (udisks2)
Attack vector: local / no user interaction
Patched: 2.10.1-6ubuntu1.5 — 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 udisks2.

📍 Affected scope

Check the vendor advisory for the affected versions of udisks2.

🔥 Severity

Severity: ?. Successful exploitation can lead to full system takeover.

🔧 How to fix

Update to 2.10.1-6ubuntu1.5.

🛡️ 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 'udisks2' . 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 'udisks2' . | 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 udisks2 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 udisks2 to 2.10.1-6ubuntu1.5
```
ステージング環境で 2.10.1-6ubuntu1.5 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

Ubuntu:24.04:LTS udisks2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1-6ubuntu1.5"}]}]

Ubuntu:26.04:LTS udisks2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.91-1ubuntu2.1"}]}]

References

advisory ubuntu.com
report ubuntu.com
report cve.org
report github.com