Security Hardening

Debian 12 — libksba — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libksba — multiple vulnerabilities (10 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-2006-5111 CVE-2014-9087 CVE-2016-4353 CVE-2016-4354 CVE-2016-4355 CVE-2016-4356 CVE-2016-4574 CVE-2016-4579  +2 more Upstream summary: The libksba library 0.9.12 and possibly other versions, as used by gpgsm in the newpg package […]

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

Debian 12 — libbpf — 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-2021-45940 CVE-2021-45941 CVE-2022-3533 CVE-2022-3534 CVE-2022-3606 CVE-2025-29481 Upstream summary: libbpf 0.6.0 and 0.6.1 has a heap-based buffer overflow (4 bytes) in __bpf_object__open (called from bpf_object__open_mem and bpf-object-fuzzer.c). Table of […]

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Debian 13 — darktable — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — darktable — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-1438 CVE-2013-1439 CVE-2013-2126 CVE-2015-3885 CVE-2015-8366 CVE-2015-8367 CVE-2018-25017 Upstream summary: Unspecified vulnerability in dcraw 0.8.x through 0.8.9, as used in libraw, ufraw, shotwell, and other products, allows context-dependent attackers […]

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Debian 11 — python-psutil — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-psutil — 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-2019-18874 Upstream summary: psutil (aka python-psutil) through 5.6.5 can have a double free. This occurs because of refcount mishandling within a while or for loop that converts system […]

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Debian 11 — xmlsec1 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — xmlsec1 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0217 CVE-2009-3736 CVE-2011-1425 CVE-2017-1000061 Upstream summary: The design of the W3C XML Signature Syntax and Processing (XMLDsig) recommendation, as implemented in products including (1) the Oracle Security Developer […]

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Debian 13 — tomcat-native — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — tomcat-native — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-3555 CVE-2017-15698 CVE-2018-8019 CVE-2018-8020 Upstream summary: The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft Internet Information Services (IIS) 7.0, mod_ssl in […]

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Debian 11 — ktexteditor — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — ktexteditor — multiple vulnerabilities (2 CVEs) — 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-2018-10361 CVE-2022-23853 Upstream summary: An issue was discovered in KTextEditor 5.34.0 through 5.45.0. Insecure handling of temporary files in the KTextEditor's kauth_ktexteditor_helper service (as utilized in the Kate […]

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Debian 12 — libapache-authenhook-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — libapache-authenhook-perl — 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-2010-3845 Upstream summary: libapache-authenhook-perl 2.00-04 stores usernames and passwords in plaintext in the vhost error log. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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

Debian 11 — kiwix — 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-2015-1032 Upstream summary: Cross-site scripting (XSS) vulnerability in Kiwix before 0.9.1, when using kiwix-serve, allows remote attackers to inject arbitrary web script or HTML via the pattern parameter […]

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Debian 13 — libidn2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — libidn2 — 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-2019-12290 CVE-2019-18224 Upstream summary: GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it possible […]

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