Common Problems

Debian 12 — opendmarc — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — opendmarc — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-16378 CVE-2019-20790 CVE-2020-12272 CVE-2020-12460 CVE-2021-34555 CVE-2024-25768 Upstream summary: OpenDMARC through 1.3.2 and 1.4.x through 1.4.0-Beta1 is prone to a signature-bypass vulnerability with multiple From: addresses, which might affect […]

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Debian 13 — crossfire-maps — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — crossfire-maps — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2008-4908 Upstream summary: maps/Info/combine.pl in CrossFire crossfire-maps 1.11.0 allows local users to overwrite arbitrary files via a symlink attack on a temporary file. Table of contents Symptom & […]

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

Debian 11 — postgrey — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2005-1127 Upstream summary: Format string vulnerability in the log function in Net::Server 0.87 and earlier, as used in Postfix Greylisting Policy Server (Postgrey) 1.18 and earlier, and possibly […]

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Debian 13 — python-mechanize — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — python-mechanize — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-32837 Upstream summary: mechanize, a library for automatically interacting with HTTP web servers, contains a regular expression that is vulnerable to regular expression denial of service (ReDoS) prior to […]

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Debian 13 — libz-mingw-w64 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libz-mingw-w64 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-25032 CVE-2022-37434 Upstream summary: zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches. Table of contents Symptom & Impact […]

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Debian 12 — gradle-completion — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — gradle-completion — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2026-25063 Upstream summary: gradle-completion provides Bash and Zsh completion support for Gradle. A command injection vulnerability was found in gradle-completion up to and including 9.3.0 that allows arbitrary […]

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Debian 13 — libcatalyst-plugin-session-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libcatalyst-plugin-session-perl — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-25052 CVE-2025-40924 Upstream summary: A vulnerability has been found in Catalyst-Plugin-Session up to 0.40 and classified as problematic. This vulnerability affects the function _load_sessionid of the file lib/Catalyst/Plugin/Session.pm […]

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

Debian 12 — xwayland — 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-2021-4008 CVE-2021-4009 CVE-2021-4010 CVE-2021-4011 CVE-2022-2319 CVE-2022-2320 CVE-2022-3550 CVE-2022-3551  +12 more Upstream summary: A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access […]

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Debian 12 — mcrypt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — mcrypt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-4409 CVE-2012-4426 CVE-2012-4527 Upstream summary: Stack-based buffer overflow in the check_file_head function in extra.c in mcrypt 2.6.8 and earlier allows user-assisted remote attackers to execute arbitrary code via […]

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