Linux

Oracle Linux 8 — systemd — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — systemd — vulnerability — patch and remediation guide (ELSA-2022-6206)

🟠 High   ⏱ 15–60 min  Last verified: 3 July 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-6206 Related CVEs: CVE-2022-2526 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Alpine Linux 3.18 — libpng — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.18

Alpine Linux 3.18 — libpng — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.18 / fixed in 1.6.37-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libpng 1.6.37-r0 Related CVEs: CVE-2019-7317 CVE-2018-14048 CVE-2018-14550 Upstream summary: Alpine main repository for vv3.18 ships libpng 1.6.37-r0 which addresses CVE-2019-7317. Table of contents Symptom & […]

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Common Problems 120075

Debian 12 Sudo Access Broken by Policy Misconfiguration

🟠 High   ⏱ 5–30 min  Last verified: 3 July 2023 Affected versions: Debian 12 📖 ~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 & Hardening Related Errors & […]

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How to Configure Kubernetes RBAC on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure Kubernetes RBAC on RHEL 9

Kubernetes Role-Based Access Control (RBAC) is the mechanism for controlling which users and service accounts can perform which actions on which resources within a Kubernetes cluster. Without RBAC configuration, all authenticated users (and service accounts in pods) have full admin access — a significant security risk in multi-team environments. RBAC uses four resource types: Role […]

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AlmaLinux 9 — dbus-broker — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 9

AlmaLinux 9 — dbus-broker — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2022:6608 Related CVEs: CVE-2022-31212 CVE-2022-31213 Upstream summary: dbus-broker is an implementation of a message bus as defined by the D-Bus specification. Its aim is to provide high performance and reliability, while keeping […]

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openSUSE Tumbleweed — borgbackup — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — borgbackup — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2023-36811 CVE-2016-10099 CVE-2016-10100 CVE-2017-15914 Upstream summary: borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. A flaw in the cryptographic authentication scheme in […]

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Debian 12 — libnet-dns-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libnet-dns-perl — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 July 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2007-3377 CVE-2007-3409 CVE-2007-6341 CVE-2008-1447 Upstream summary: Header.pm in Net::DNS before 0.60, a Perl module, (1) generates predictable sequence IDs with a fixed increment and (2) can use the […]

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Debian 11 — xemacs21 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xemacs21 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 July 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-0100 CVE-2007-6109 CVE-2008-1694 CVE-2009-2688 CVE-2010-0825 CVE-2022-45939 Upstream summary: Format string vulnerability in the movemail utility in (1) Emacs 20.x, 21.3, and possibly other versions, and (2) XEmacs 21.4 […]

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Debian 12 — texlive-base — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — texlive-base — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 July 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10243 CVE-2017-17513 Upstream summary: TeX Live allows remote attackers to execute arbitrary commands by leveraging inclusion of mpost in shell_escape_commands in the texmf.cnf config file. Table of contents […]

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Debian 12 — passportjs — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — passportjs — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 July 2023 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2022-25896 Upstream summary: This affects the package passport before 0.6.0. When a user logs in or logs out, the session is regenerated instead of being closed. Table of […]

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