Linux

Ubuntu 22.04 — linux-kvm — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — linux-kvm — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8279-1 Related CVEs: CVE-2024-35862 CVE-2024-50060 CVE-2026-23274 CVE-2026-23351 CVE-2026-31419 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533  +12 more Upstream summary: It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic […]

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Common Problems 120128

Debian 12: OOM kills Java service under load

  • May 19, 2026
  • Linux
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🔴 Critical   ⏱ 5–30 min  Last verified: 20 May 2026 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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Common Problems 114575

RHEL 9: mdadm RAID Array Degraded

  • May 19, 2026
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 📖 ~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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Ubuntu 18.04 — dnsmasq — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — dnsmasq — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8268-1 Related CVEs: CVE-2026-4890 CVE-2026-4891 CVE-2026-2291 CVE-2026-4892 CVE-2026-5172 CVE-2026-4893 CVE-2023-28450 CVE-2023-50387  +12 more Upstream summary: Andrew S. Fasano, Royce M, and Hugo Martinez Ray discovered that Dnsmasq did not allocate […]

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Common Problems 120649

Debian 11 OpenSSL Version Mismatch Breaks App Startup

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 11 📖 ~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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SLES 15 — xrdp — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — xrdp — multiple vulnerabilities (18 CVEs) — patch and remediation guide

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2026:0404-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-68670 CVE-2024-39917 CVE-2022-23477 CVE-2020-4044 CVE-2023-42822 CVE-2023-40184 CVE-2022-23478 CVE-2022-23468  +10 more Upstream summary: xrdp is an open source RDP server. xrdp before v0.10.5 contains an unauthenticated […]

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SLES 12 — python-Werkzeug — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — python-Werkzeug — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2024:1572-1 (see also SUSE bugzilla) Related CVEs: CVE-2024-34069 CVE-2023-25577 CVE-2019-14806 Upstream summary: Werkzeug is a comprehensive WSGI web application library. The debugger in affected versions of Werkzeug can allow an attacker to […]

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

Ubuntu 20.04 — linux-kvm — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8273-1 Related CVEs: CVE-2024-50304 CVE-2026-23112 CVE-2026-23209 CVE-2026-31431 CVE-2026-31504 CVE-2026-31533 CVE-2026-43033 CVE-2026-43077  +12 more Upstream summary: Several security issues were discovered in the Linux kernel. An attacker could possibly use these […]

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CentOS Stream 9 — git-lfs — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — git-lfs — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2026:14200 Related CVEs: CVE-2026-32280 CVE-2026-32282 CVE-2026-32283 CVE-2026-25679 CVE-2025-61726 CVE-2025-61729 CVE-2025-68121 CVE-2025-26625  +12 more Upstream summary: Git Large File Storage (LFS) replaces large files such as audio samples, videos, datasets, and graphics […]

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Common Problems 120639

Debian 11 IPv6 Misconfiguration Causes Dual-Stack Outages

  • May 19, 2026
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: Debian 11 📖 ~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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