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Ubuntu Security NoticesUSN-8644-2

USN-8644-2: Linux kernel (GCP) vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - File systems infrastructure; - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - SCTP protocol; - TIPC protocol; (CVE-2026-43071, CVE-2026-52914, CVE-2026-52993, CVE-2026-53043, CVE-2026-53224, CVE-2026-53246, CVE-2026-53309)

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Scope

What the vendor says is affected

The collected bulletin did not provide a separate affected-products list. Check the original bulletin before making an exposure decision.

Next step

What the vendor recommends

This update corrects flaws in the following subsystems: - File systems infrastructure; - OCFS2 file system; - B.A.T.M.A.N.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Ubuntu

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-43071View CVSS, KEV, EPSS, and threat contextCVE-2026-52914View CVSS, KEV, EPSS, and threat contextCVE-2026-52993View CVSS, KEV, EPSS, and threat contextCVE-2026-53043View CVSS, KEV, EPSS, and threat contextCVE-2026-53224View CVSS, KEV, EPSS, and threat contextCVE-2026-53246View CVSS, KEV, EPSS, and threat contextCVE-2026-53309View CVSS, KEV, EPSS, and threat context
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