Security Hardening

Ubuntu 22.04 — libxmltok — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — libxmltok — multiple vulnerabilities (19 CVEs) — patch and remediation guide

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8023-1 Related CVEs: CVE-2026-25210 CVE-2026-24515 CVE-2012-1148 CVE-2015-1283 CVE-2016-0718 CVE-2016-4472 CVE-2018-20843 CVE-2019-15903  +11 more Upstream summary: It was discovered that Expat, contained within the xmltok library, incorrectly handled the initialization of […]

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SLES 16 — libusbredirparser1 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — libusbredirparser1 — vulnerability — patch and remediation guide

  • January 17, 2026
  • Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 17 January 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2021-3700 Upstream summary: A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing […]

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

Ubuntu 22.04 — git — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5376-5 Related CVEs: https://launchpad.net/bugs/2142790 https://launchpad.net/bugs/2142239 https://launchpad.net/bugs/2116251 CVE-2025-48385 CVE-2025-46835 CVE-2025-27614 CVE-2025-48386 CVE-2025-27613  +12 more Upstream summary: USN-5376-4 fixed a regression in Git. The update introduced a regression when specifying configuration includes […]

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SLES 16 — jtidy — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — jtidy — vulnerability — patch and remediation guide

  • January 17, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 17 January 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2023:3016-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-34623 Upstream summary: An issue was discovered jtidy thru r938 allows attackers to cause a denial of service or other unspecified impacts via crafted object […]

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SLES 16 — wdiff — vulnerability — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — wdiff — vulnerability — patch and remediation guide

  • January 17, 2026
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 17 January 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1329-1 (see also SUSE bugzilla) Related CVEs: CVE-2012-3386 Upstream summary: The "make distcheck" rule in GNU Automake before 1.11.6 and 1.12.x before 1.12.2 grants world-writable permissions to the extraction directory, which introduces […]

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Rocky Linux 8 — containernetworking-plugins — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Rocky Linux 8

Rocky Linux 8 — containernetworking-plugins — multiple vulnerabilities (20 CVEs) — patch and remediation guide

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Rocky Linux 8 📖 ~4 min read  •  Source: Rocky Linux RXSA RLSA-2026:4672 Related CVEs: CVE-2025-61726 CVE-2025-61728 CVE-2025-68121 CVE-2024-24785 CVE-2025-61729 CVE-2025-65637 CVE-2025-47913 CVE-2025-52881  +12 more Upstream summary: The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc. […]

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SLES 16 — maven — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 16

SLES 16 — maven — multiple vulnerabilities (3 CVEs) — patch and remediation guide

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: SLES 16 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:712-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-26291 CVE-2020-13956 CVE-2021-42550 Upstream summary: Apache Maven will follow repositories that are defined in a dependency's Project Object Model (pom) which may be surprising to […]

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Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2026-50094)

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-50094 Related CVEs: CVE-2025-40149 CVE-2025-40257 CVE-2025-40258 CVE-2025-68209 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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Oracle Linux 9 — java-17-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — java-17-openjdk — vulnerability — patch and remediation guide (ELSA-2026-9686)

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2026-9686 Related CVEs: CVE-2026-22007 CVE-2026-22013 CVE-2026-22016 CVE-2026-22018 CVE-2026-22021 CVE-2026-23865 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Oracle Linux 10 — xorg-x11-server-Xwayland — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — xorg-x11-server-Xwayland — vulnerability — patch and remediation guide (ELSA-2025-9304)

  • January 17, 2026
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 17 January 2026 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-9304 Related CVEs: CVE-2025-49178 CVE-2025-49175 CVE-2025-49180 CVE-2025-49176 CVE-2025-49179 CVE-2025-49177 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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