Linux

Debian 11 — maildirsync — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — maildirsync — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-5150 Upstream summary: sample.sh in maildirsync 1.1 allows local users to append data to arbitrary files via a symlink attack on a /tmp/maildirsync-*.#####.log temporary file. Table of contents […]

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Amazon Linux 2 — openblas — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — openblas — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2R4-2023-001 Related CVEs: CVE-2021-4048 Upstream summary: An out-of-bounds read flaw was found in the CLARRV, DLARRV, SLARRV, and ZLARRV functions in lapack and OpenBLAS. A specially crafted input passed to […]

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Debian 11 — libfastjson — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libfastjson — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-12762 Upstream summary: json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend. Table of contents Symptom & Impact […]

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Amazon Linux 2 — kernel-livepatch-4.14.299-223.520 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.299-223.520 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-100 Related CVEs: CVE-2022-3524 Upstream summary: A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function ipv6_renew_options of the component […]

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Gentoo Linux — media-gfx/imagemagick — multiple vulnerabilities (18 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-gfx/imagemagick — multiple vulnerabilities (18 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202405-02 Related CVEs: CVE-2021-4219 CVE-2021-20224 CVE-2022-0284 CVE-2022-1115 CVE-2022-2719 CVE-2022-3213 CVE-2022-28463 CVE-2022-32545  +10 more Upstream summary: Multiple vulnerabilities have been discovered in ImageMagick. Please review the CVE identifiers referenced below for details. Table […]

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Debian 11 — ddskk — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ddskk — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 19 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2003-0539 Upstream summary: skk (Simple Kana to Kanji conversion program) 12.1 and earlier, and the ddskk package which is based on skk, creates temporary files insecurely, which allows […]

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

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

🟠 High   ⏱ 15–60 min  Last verified: 19 July 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5483-1 Related CVEs: CVE-2018-12648 CVE-2021-36045 CVE-2021-36046 CVE-2021-36047 CVE-2021-36048 CVE-2021-36050 CVE-2021-36051 CVE-2021-36052  +12 more Upstream summary: It was discovered that Exempi incorrectly handled certain media files. If a user or automated […]

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Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-3057)

🟠 High   ⏱ 15–60 min  Last verified: 18 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3057 Related CVEs: CVE-2021-22543 CVE-2021-22555 CVE-2021-3609 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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Debian 11 — prewikka — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — prewikka — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 July 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2010-2058 Upstream summary: setup.py in Prewikka 0.9.14 installs prewikka.conf with world-readable permissions, which allows local users to obtain the SQL database password. Table of contents Symptom & Impact […]

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