Linux

Common Problems 116901

Ubuntu 22.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Ubuntu 22.04 LTS 📖 ~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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Debian 10 — tomcat9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — tomcat9 — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-10072 CVE-2020-9484 CVE-2020-13943 CVE-2021-25122 CVE-2021-30640 CVE-2021-41079 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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SLES 16 — afterburn — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — afterburn — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2021-27378 CVE-2021-32714 CVE-2022-24713 CVE-2020-35905 CVE-2020-36465 CVE-2021-32715 CVE-2021-38191 Upstream summary: An issue was discovered in the rand_core crate before 0.6.2 for Rust. Because read_u32_into and read_u64_into […]

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CentOS Stream 10 — tomcat — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — tomcat — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:23050 Related CVEs: CVE-2025-31651 CVE-2025-55752 CVE-2025-61795 Upstream summary: Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages (JSP) technologies. Security Fix(es): * tomcat: Apache Tomcat: Bypass of […]

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Oracle Linux 9 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-3592)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-3592 Related CVEs: CVE-2023-24936 CVE-2023-32032 CVE-2023-29337 CVE-2023-29331 CVE-2023-33128 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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Debian 11 — binutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — binutils — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-4807 CVE-2005-4808 CVE-2006-2362 CVE-2008-2310 CVE-2012-3509 CVE-2014-8484 CVE-2014-8485 CVE-2014-8501  +12 more Upstream summary: Stack-based buffer overflow in the as_bad function in messages.c in the GNU as (gas) assembler in […]

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SLES 12 — containerd — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — containerd — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:1338-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-1996 CVE-2024-25621 CVE-2025-64329 CVE-2024-40635 CVE-2023-25153 CVE-2023-25173 CVE-2022-23471 Upstream summary: Authorization Bypass Through User-Controlled Key in GitHub repository emicklei/go-restful prior to v3.8.0. Table of contents Symptom […]

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SLES 16 — package — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — package — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2025-63389 CVE-2026-43039 CVE-2026-33210 CVE-2026-22184 CVE-2026-24061 CVE-2023-26785 CVE-2022-1949 CVE-2019-10171  +12 more Upstream summary: A critical authentication bypass vulnerability exists in Ollama platform's API endpoints in versions […]

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CentOS Stream 10 — mod_md — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — mod_md — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:23738 Related CVEs: CVE-2025-55753 Upstream summary: This module manages common properties of domains for one or more virtual hosts. Specifically it can use the ACME protocol to automate certificate provisioning. Certificates […]

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Oracle Linux 9 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — .NET 7.0 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2023-4057)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-4057 Related CVEs: CVE-2023-33170 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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