Fix Prevention

Ubuntu 22.04 — gcc-12 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — gcc-12 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7700-1 Related CVEs: CVE-2023-4039 Upstream summary: It was discovered that the -fstack-protector hardening feature in GCC for AArch64 did not properly protect dynamically-sized local variables such as those created using […]

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Ubuntu 20.04 — python-py — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — python-py — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5138-1 Related CVEs: CVE-2020-29651 Upstream summary: The py.path.svnwc component of py (aka python-py) through v1.9.0 contains a regular expression with an ambiguous subpattern that is susceptible to catastrophic backtracing. This […]

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Ubuntu 18.04 — libexif — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — libexif — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4624-1 Related CVEs: CVE-2020-0452 CVE-2020-0093 CVE-2020-0182 CVE-2020-0198 CVE-2020-13112 CVE-2020-13113 CVE-2020-13114 CVE-2018-20030  +4 more Upstream summary: It was discovered that libexif incorrectly handled certain inputs. An attacker could possibly use this […]

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Ubuntu 14.04 — sharutils — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — sharutils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-3605-1 Related CVEs: CVE-2018-1000097 Upstream summary: It was discovered that Sharutils incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. Table of contents Symptom & […]

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Ubuntu 20.04 — imlib2 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — imlib2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5099-1 Related CVEs: CVE-2020-12761 Upstream summary: It was discovered that Imlib2 incorrectly handled certain ICO images. An attacker could use this issue to cause a denial of service and possibly […]

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Ubuntu 20.04 — adsys — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — adsys — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8089-3 Related CVEs: CVE-2023-3978 CVE-2025-47911 CVE-2022-41723 CVE-2025-58190 CVE-2021-33194 CVE-2022-27664 CVE-2025-22872 CVE-2024-45338 Upstream summary: USN-8089-1 fixed vulnerabilities in Go Networking. This update provides the corresponding update to code vendored in LXD, […]

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Ubuntu 22.04 — logback — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — logback — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7616-1 Related CVEs: CVE-2023-6378 CVE-2021-42550 Upstream summary: It was discovered that logback could read malicious configuration files from LDAP servers. An attacker with the required permissions could possibly use this […]

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Ubuntu 24.04 — samba — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — samba — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7826-1 Related CVEs: CVE-2025-10230 CVE-2025-9640 Upstream summary: Andrew Walker discovered that Samba incorrectly initialized memory in the vfs_streams_xattr module. An authenticated attacker could possibly use this issue to obtain sensitive […]

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Ubuntu 20.04 — mbedtls — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — mbedtls — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8123-1 Related CVEs: CVE-2025-47917 CVE-2021-44732 CVE-2025-48965 CVE-2025-52497 CVE-2025-52496 CVE-2025-27810 CVE-2024-23775 Upstream summary: It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this […]

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Ubuntu 22.04 — google-guest-agent — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — google-guest-agent — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7956-1 Related CVEs: CVE-2025-58181 CVE-2024-45337 CVE-2024-24786 Upstream summary: Jakub Ciolek discovered that the Go Cryptography module included in Google Guest Agent did not validate GSSAPI authentication requests during SSH operations. […]

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