Linux

Common Problems 113935

RHEL 10 – journalctl logs rotate too aggressively and lose incident evidence

🟡 Medium   ⏱ 5–30 min  Last verified: 20 January 2026 Affected versions: RHEL 10 RHEL 10.0 RHEL 10.1 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & […]

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Debian 11 — haveged — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — haveged — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-41054 Upstream summary: In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not […]

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Rocky Linux 8 — util-linux — vulnerability — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — util-linux — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:1852 Related CVEs: CVE-2025-14104 Upstream summary: The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include […]

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Debian 11 — smartdns — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — smartdns — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-1425 Upstream summary: A security flaw has been discovered in pymumu SmartDNS up to 47.1. This vulnerability affects the function _dns_decode_rr_head/_dns_decode_SVCB_HTTPS of the file src/dns.c of the component […]

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Debian 13 — gnome-power-manager — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — gnome-power-manager — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2006-7240 CVE-2009-4997 Upstream summary: gnome-power-manager 2.14.0 does not properly implement the lock_on_suspend and lock_on_hibernate settings for locking the screen when the suspend or hibernate button is pressed, which […]

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openSUSE Tumbleweed — thrift — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — thrift — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2026-41604 CVE-2026-41605 CVE-2026-41636 CVE-2026-41606 CVE-2026-41607 CVE-2020-13949 Upstream summary: Out-of-bounds Read vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to […]

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Debian 13 — coccinelle — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — coccinelle — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 20 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-1753 Upstream summary: Coccinelle 0.1.7 allows local users to overwrite arbitrary files via a symlink attack on an unspecified "result file." Table of contents Symptom & Impact Environment […]

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Debian 13 — tcpflow — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — tcpflow — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 20 January 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-14938 CVE-2018-18409 CVE-2026-25061 Upstream summary: An issue was discovered in wifipcap/wifipcap.cpp in TCPFLOW through 1.5.0-alpha. There is an integer overflow in the function handle_prism during caplen processing. If […]

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How to Configure Suricata IDS/IPS on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Suricata IDS/IPS on RHEL 9

Suricata is a high-performance, open-source network intrusion detection and prevention system (IDS/IPS) that inspects traffic in real time against a rule set to identify threats, policy violations, and malicious activity. On RHEL 9, Suricata integrates cleanly with systemd and can run in passive IDS mode (logging alerts without blocking) or active IPS mode (dropping malicious […]

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Debian 12 — php-twig — multiple vulnerabilities (15 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — php-twig — multiple vulnerabilities (15 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 20 January 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-23614 CVE-2022-39261 CVE-2024-45411 CVE-2024-51754 CVE-2024-51755 CVE-2025-24374 CVE-2026-24425 CVE-2026-46627  +7 more Upstream summary: Twig is an open source template language for PHP. When in a sandbox mode, the `arrow` […]

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