Ubuntu Linux Kernel Multiple Vulnerabilities

Release Date: 2 Feb 2026

RISK: Medium Risk

TYPE: Operating Systems - Linux

Multiple vulnerabilities were identified in Ubuntu Linux Kernel. A remote attacker could exploit some of these vulnerabilities to trigger denial of service condition, remote code execution, elevation of privilege, sensitive information disclosure, security restriction bypass and data manipulation on the targeted system.

---

Impact

• Denial of Service
• Information Disclosure
• Remote Code Execution
• Security Restriction Bypass
• Data Manipulation
• Elevation of Privilege

---

System / Technologies affected

• Ubuntu 14.04 LTS
• Ubuntu 16.04 LTS
• Ubuntu 18.04 LTS
• Ubuntu 20.04 LTS

---

Solutions

Before installation of the software, please visit the vendor web-site for more details.

 

Apply fixes issued by the vendor:

• https://ubuntu.com/security/notices/USN-7986-1
• https://ubuntu.com/security/notices/USN-7987-1
• https://ubuntu.com/security/notices/USN-7987-2
• https://ubuntu.com/security/notices/USN-7988-1
• https://ubuntu.com/security/notices/USN-7988-2
• https://ubuntu.com/security/notices/USN-7990-1
• https://ubuntu.com/security/notices/USN-7990-2

---

Vulnerability Identifier

• CVE-2021-47485
• CVE-2022-48986
• CVE-2022-49698
• CVE-2024-26689
• CVE-2024-27078
• CVE-2024-49959
• CVE-2024-50195
• CVE-2024-53164
• CVE-2024-53197
• CVE-2024-56606
• CVE-2024-56756
• CVE-2024-57850
• CVE-2025-21726
• CVE-2025-38352
• CVE-2025-39993
• CVE-2025-40019

---

Source

• Ubuntu

---

Related Link

• https://ubuntu.com/security/notices/USN-7986-1
• https://ubuntu.com/security/notices/USN-7987-1
• https://ubuntu.com/security/notices/USN-7987-2
• https://ubuntu.com/security/notices/USN-7988-1
• https://ubuntu.com/security/notices/USN-7988-2
• https://ubuntu.com/security/notices/USN-7990-1
• https://ubuntu.com/security/notices/USN-7990-2