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Security Advisory – 21 Feb 2026

Security fixes and advisories that landed overnight. Updated 21 Feb 2026 10:00 GMT.

Top items

Ubuntu

USN-8015-5: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel and an attacker could possibly use these to compromise the system. The update corrects flaws in the Cryptographic API, the SMB network file system and the io_uring subsystem.

  • Published: 20 Feb 2026 13:23 GMT
  • CVEs: CVE-2025-38561, CVE-2025-39698, CVE-2025-40019
  • Notes: Fixes in the Cryptographic API, SMB network file system and io_uring
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