Ubuntu Multiple Linux Kernel Vulnerabilities Disclosed and Patched
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- •Multiple vulnerabilities in the Linux kernel require urgent updates.
- •Affected subsystems include NFS, IPv6 networking, and Netfilter.
- •Users must reboot and recompile third-party modules after applying patches.
On September 30, 2026, Ubuntu released multiple security notices regarding vulnerabilities in the Linux kernel affecting various subsystems including the Network File System (NFS) server daemon, IPv6 networking, and Netfilter. These vulnerabilities could allow attackers to compromise systems. The updates require users to reboot their systems and recompile third-party kernel modules due to an ABI change. The notices include USN-8850-1, USN-8851-1, and USN-8819-4, with previous updates like USN-8819-3 also addressing similar issues. Users are urged to apply these updates promptly to mitigate risks. Ubuntu Pro offers ten-year security coverage for affected packages.
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