Troubleshooting

SLES 15 — icu — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — icu — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory RHSA-2025:11888 (see also SUSE bugzilla) Related CVEs: CVE-2025-5222 CVE-2020-10531 CVE-2020-21913 Upstream summary: A stack buffer overflow was found in Internationl components for unicode (ICU ). While running the genrb binary, the 'subtag' […]

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pr cp 118605 r2

Ubuntu 16.04 LTS iptables rules lost after reboot

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: 16.04 📖 ~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 […]

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SLES 12 — drbd — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — drbd — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:2960-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-1989 CVE-2023-1990 CVE-2023-2162 CVE-2023-1390 CVE-2023-28464 CVE-2023-28772 CVE-2023-1118 CVE-2023-0590  +12 more Upstream summary: A use-after-free flaw was found in btsdio_remove in drivers\bluetooth\btsdio.c in the Linux Kernel. […]

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pr cp 119131 r2

Ubuntu 14.04 LTS CIFS mount authentication fails after password rotation

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: 14.04 📖 ~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 […]

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CentOS Stream 10 — qt6-qtbase — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 10

CentOS Stream 10 — qt6-qtbase — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 10 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:9486 Related CVEs: CVE-2025-5455 Upstream summary: Qt is a software toolkit for developing applications. This package contains base tools, like string, xml, and network handling. Security Fix(es): * qt5: qt6: QtCore […]

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Debian 13 — suricata — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — suricata — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-5919 CVE-2014-6603 CVE-2015-0928 CVE-2015-0971 CVE-2015-8954 CVE-2016-10728 CVE-2017-15377 CVE-2017-7177  +12 more Upstream summary: Suricata before 1.4.6 allows remote attackers to cause a denial of service (crash) via a malformed […]

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CentOS Stream 9 — jackson-core — vulnerability — patch and remediation guide — diagnosis and fix on CentOS Stream 9

CentOS Stream 9 — jackson-core — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: CentOS Stream 9 📖 ~4 min read  •  Source: AlmaLinux/RHEL advisory ALSA-2025:12280 Related CVEs: CVE-2025-52999 Upstream summary: Core part of Jackson that defines Streaming API as well as basic shared abstractions. Security Fix(es): * com.fasterxml.jackson.core/jackson-core: jackson-core Potential StackoverflowError (CVE-2025-52999) For more details […]

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Debian 12 — nss — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — nss — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-2404 CVE-2009-2408 CVE-2009-2409 CVE-2009-3555 CVE-2010-3170 CVE-2010-3173 CVE-2011-3389 CVE-2011-3640  +12 more Upstream summary: Heap-based buffer overflow in a regular-expression parser in Mozilla Network Security Services (NSS) before 3.12.3, as […]

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Debian 11 — libreoffice — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libreoffice — 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-2011-2685 CVE-2011-2713 CVE-2012-1149 CVE-2012-2334 CVE-2012-2665 CVE-2012-4233 CVE-2012-5639 CVE-2013-2189  +12 more Upstream summary: Stack-based buffer overflow in the Lotus Word Pro import filter in LibreOffice before 3.3.3 allows remote […]

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