Common Problems

Ubuntu 20.04 — google-guest-agent — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — google-guest-agent — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7956-1 Related CVEs: CVE-2025-58181 CVE-2024-45337 Upstream summary: Jakub Ciolek discovered that the Go Cryptography module included in Google Guest Agent did not validate GSSAPI authentication requests during SSH operations. An […]

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Ubuntu 24.04 — node-sha.js — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — node-sha.js — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 May 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7778-1 Related CVEs: CVE-2025-9288 Upstream summary: Nikita Skovoroda discovered that sha.js did not properly handle certain inputs. An attacker could possibly use this issue to manipulate the internal state of […]

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Ubuntu 16.04 — squid3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — squid3 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 May 2026 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7804-2 Related CVEs: CVE-2025-59362 CVE-2025-62168 CVE-2024-37894 CVE-2021-28651 CVE-2022-41318 CVE-2023-49285 CVE-2023-49286 CVE-2023-50269  +12 more Upstream summary: USN-7804-1 fixed a vulnerability in Squid. This update provides the corresponding update for Ubuntu 16.04 […]

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openSUSE Tumbleweed — alloy — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — alloy — multiple vulnerabilities (11 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-2026-41602 CVE-2026-4427 CVE-2026-34986 CVE-2025-68156 CVE-2024-36129 CVE-2024-8975 CVE-2026-25934 CVE-2026-26958  +3 more Upstream summary: Integer Overflow or Wraparound vulnerability in Apache Thrift TFramedTransport Go language implementation This […]

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Ubuntu 20.04 — glibc — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — glibc — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 18 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8005-1 Related CVEs: CVE-2026-0915 CVE-2025-8058 CVE-2025-15281 CVE-2026-0861 CVE-2025-4802 CVE-2025-0395 CVE-2024-33599 CVE-2024-33600  +12 more Upstream summary: Vitaly Simonovich discovered that the GNU C Library did not properly initialize the input when […]

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SLES 16 — libpcre2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libpcre2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 18 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:21094-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-58050 CVE-2017-8786 Upstream summary: The PCRE2 library is a set of C functions that implement regular expression pattern matching. In version 10.45, a heap-buffer-overflow read […]

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Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide (ELSA-2025-18815)

🟡 Medium   ⏱ 10–30 min  Last verified: 18 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-18815 Related CVEs: CVE-2025-53066 CVE-2025-53057 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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

Oracle Linux 8 — freerdp — vulnerability — patch and remediation guide (ELSA-2026-6918)

🟠 High   ⏱ 15–60 min  Last verified: 18 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-6918 Related CVEs: CVE-2026-22852 CVE-2026-22854 CVE-2026-22856 CVE-2026-23732 CVE-2026-23948 CVE-2026-24491 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 122013

Jail Networking Broken After Interface Changes

🟡 Medium   ⏱ 5–30 min  Last verified: 18 May 2026 Affected versions: FreeBSD 15 📖 ~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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Red Hat Enterprise Linux 9 — nghttp2 — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 9

Red Hat Enterprise Linux 9 — nghttp2 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 9 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:8548 Related CVEs: CVE-2026-27135 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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CHAT