CVE-2026-3888-snap-confine-systemd-tmpfiles-LPE

CVE-2026-3888 — snap-confine / systemd-tmpfiles ローカル権限昇格 非特権ユーザーからUbuntu Desktop 24.04+上の完全なrootへのローカル権限昇格。snap-confineとsystemd-tmpfiles間のTOCTOUレースコンディションを悪用します。SUID とCapabilities の2つのバリアントが提供されています。 CVSS: 7.8 高 | アドバイザリ: Qualys | パッチ: snapd 2.74.2、2026年3月17日 目次 バリアント比較 バリアント1 — SUID 仕組み ファイル ビルド...

CVE-2026-3888-POC-all-from-the-Qualys-platform.

CVE-2026-3888: snapd ローカル権限昇格 PoC snapd におけるローカル権限昇格の脆弱性（CVE-2026-3888）の概念実証です。この脆弱性により、影響を受ける Ubuntu システムにおいて、非特権のローカル攻撃者が systemd-tmpfiles によって削除された後にプライベートディレクトリ /tmp/.snap を再作成することで、権限を root に昇格させることができます。 📋 脆弱性の概要 ID: CVE-2026-3888 製品: snapd 影響を受けるシステム: Ubuntu 16.04 LTS、18.04 LTS、20.04...

CVE-2026-3888

CVE-2026-3888 - snap-confine + systemd-tmpfiles ローカル権限昇格 免責事項: このリポジトリは教育目的のみ を意図しています。すべての内容は、Qualys が 2026 年 3 月 17 日に公開した元のセキュリティアドバイザリに基づいています。この脆弱性は修正済みです。システムを常に最新の状態に保ってください。所有していないシステム、または明示的な書面による許可を得ていないシステムに対して、この資料を使用しないでください。 概要 CVE-2026-3888 は、Ubuntu Desktop = 24.04...

CVE-2026-3888

CVE-2026-3888 - snap-confine + systemd-tmpfiles Escalação de Privilégios Local Aviso: Este repositório é apenas para fins educacionais. Todo o conteúdo é baseado no aviso de segurança original publicado pela Qualys em 17 de março de 2026. A vulnerabilidade já foi corrigida — garanta sempre que se...

CVE-2026-16552

REJECTED A flaw was found in systemd-tmpfiles. When processing a tmpfiles.d configuration entry that writes to a file, systemd-tmpfiles can follow a symbolic link placed by an unprivileged local user, and an existing safety check does not detect this specific case because it always treats...

CVE-2026-16552

Rejected reason: The reported issue is invalid, as it requires root privileges to reproduce, and it is out of scope of the threat model of the affected component...

DEBIAN-CVE-2026-16552

A flaw was found in systemd-tmpfiles. When processing a tmpfiles.d configuration entry that writes to a file, systemd-tmpfiles can follow a symbolic link placed by an unprivileged local user, and an existing safety check does not detect this specific case because it always treats transitions away...

CVE-2026-16552

The CVE-2026-16552 entries describe a vulnerability in systemd-tmpfiles: when processing tmpfiles.d entries that write to a file, an unprivileged local user can cause systemd-tmpfiles to follow a symbolic link, potentially redirecting a privileged write to an attacker-controlled file. The highest...

CVE-2026-16552

...

CVE-2026-16552

The reported issue is invalid, as it requires root privileges to reproduce, and it is out of scope of the threat model of the affected component...

EUVD-2026-47736

A flaw was found in systemd-tmpfiles. When processing a tmpfiles.d configuration entry that writes to a file, systemd-tmpfiles can follow a symbolic link placed by an unprivileged local user, and an existing safety check does not detect this specific case because it always treats transitions away...

CVE-2026-16552

...

CVE-2026-16552

Removed by vendor...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack through the tmpfiles.d configuration process. An attacker can overwrite arbitrary files by creating a symbolic link that redirects a privileged write operation to a file of their choosing. This is only exploitable if a...

PT-2026-63427

A flaw was found in systemd-tmpfiles. When processing a tmpfiles.d configuration entry that writes to a file, systemd-tmpfiles can follow a symbolic link placed by an unprivileged local user, and an existing safety check does not detect this specific case because it always treats transitions away...

Security update 5.1.4 for Multi-Linux Manager Client Tools and Salt Bundle

Description: This update fixes the following issues: golang-github-QubitProducts-exporterexporter: Security issues fixed: CVE-2022-21698: Fixed prometheus/clientgolang possible denial of service using InstrumentHandlerCounter bsc1248699 golang-github-prometheus-nodeexporter updated to version...

SUSE SLED15 / SLES15 Security Update : alloy (SUSE-SU-2026:2438-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2438-1 advisory. This update for alloy fixes the following issues Security issues: - CVE-2026-4427: github.com/jackc/pgproto3/v...

SUSE-SU-2026:2438-1 Security update for alloy

This update for alloy fixes the following issues Security issues: - CVE-2026-4427: github.com/jackc/pgproto3/v2: improper validation of field length allows a malicious PostgreSQL server to crash a client application via a DataRow message bsc1259919. - CVE-2026-25934: github.com/go-git/go-git/v5:...

Security update 5.0.8 for Multi-Linux Manager Client Tools

This update fixes the following issues: golang-github-QubitProducts-exporterexporter: Security Fixes: CVE-2022-21698: Fixed denial of service using InstrumentHandlerCounter bsc1248707 golang-github-prometheus-nodeexporter: Backward Compatibility and packaging changes: Added compatibility for Go...

OPENSUSE-SU-2026:20878-1 Security update for sdbootutil

This update for sdbootutil fixes the following issues Security issue: - CVE-2026-25701: use of fixed directory /tmp/pcrlock.d.back in sdbootutil-update-predictions.service bsc1258241. Non security issues: Update to version 1+git20260506.25d47bf: - TPM based system does not auto-unlock encryption...