chris

AlmaLinux 8 — ndctl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — ndctl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:2058 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 117540

Ubuntu 20.04 LTS SSH Public Key Login Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 22 October 2021 📖 ~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 & Cross-Refs References & Further […]

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FreeBSD 13 — gnupg — multiple vulnerabilities (13 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — gnupg — multiple vulnerabilities (13 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: gnupg — AEAD key import overflow Related CVEs: CVE-2003-0971 CVE-2005-0366 CVE-2006-0049 CVE-2006-0455 CVE-2006-3082 CVE-2006-6235 CVE-2008-1530 CVE-2013-4402  +5 more Upstream summary: Importing an OpenPGP key having a preference list for AEAD […]

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FreeBSD 13 — pdfjam — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pdfjam — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pdfjam — insecure temporary files Related CVEs: CVE-2008-5743 Upstream summary: Secunia reports: Some security issues have been reported in PDFjam, which can be exploited by malicious, local users to perform […]

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FreeBSD 13 — citadel — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — citadel — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: fd_set — bitmap index overflow in multiple applications Upstream summary: 3APA3A reports: If programmer fails to check socket number before using select() or fd_set macros, it's possible to overwrite memory […]

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Debian 11 — stunnel4 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — stunnel4 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2002-1563 CVE-2003-0740 CVE-2008-2420 CVE-2011-2940 CVE-2013-1762 CVE-2015-3644 CVE-2021-20230 Upstream summary: stunnel 4.0.3 and earlier allows attackers to cause a denial of service (crash) via SIGCHLD signal handler race conditions […]

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OpenBSD 7.4 — readdir — errata 022_readdir — reliability fix — syspatch and remediation — diagnosis and fix on OpenBSD 7.4

OpenBSD 7.4 — readdir — errata 022_readdir — reliability fix — syspatch and remediation

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: OpenBSD 7.4 📖 ~4 min read  •  Source: OpenBSD 7.4 errata 022_readdir Errata topic: Security: readdir (All architectures) Issued: September 17, 2024 Upstream summary: In readdir name validation exclude any '/' to avoid unexpected directory traversal on untrusted file systems. Table of […]

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Debian 11 — gupnp — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — gupnp — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 October 2021 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2174 CVE-2020-12695 CVE-2021-33516 Upstream summary: GUPnP 0.12.7 allows remote attackers to cause a denial of service (crash) via an empty (1) subscription or (2) control message. Table of […]

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