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Linux Kernel Vulnerabilities Affecting Multiple Architectures

Linux Kernel Vulnerabilities Affecting Multiple Architectures

First seen 2 Oct 2026, 12:13 UTC • •
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ThreatCluster AI
ThreatCluster •October 2, 2026 at 13:09 UTC
  • •Multiple critical vulnerabilities in the Linux kernel have been identified.
  • •CVEs include CVE-2026-64530 and CVE-2026-72020, both with a CVSS score of 9.8.
  • •Users must apply the updates and reboot their systems to mitigate risks.

Recent updates to the Linux kernel have revealed several vulnerabilities that could allow attackers to compromise systems across various architectures, including ARM64, S390, and x86. The vulnerabilities affect numerous subsystems, including network drivers and file systems, with CVEs such as CVE-2026-64530 and CVE-2026-72020, both rated with a CVSS score of 9.8. The updates were released to address these issues, and users are advised to apply them promptly. The vulnerabilities could potentially be exploited by attackers to gain unauthorized access or control over affected systems. The updates also include fixes for various drivers, including those for Microsoft Azure and NVMe. Affected systems include those running on cloud platforms and enterprise environments that utilize the Linux kernel. The current status requires users to reboot their systems after applying the updates to ensure all changes take effect.

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Timeline

2026-07-26
CVE-2026-64530 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-07-27
CVE-2026-64534 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-07-27
CVE-2026-64551 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-07-27
CVE-2026-64541 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-07-27
CVE-2026-64535 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-08-10
CVE-2026-68083 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-08-15
CVE-2026-72473 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-08-15
CVE-2026-72020 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-08-15
CVE-2026-72472 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-08-15
CVE-2026-72319 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE

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Common questions

Which systems are affected by these vulnerabilities?
The vulnerabilities affect systems running the Linux kernel across various architectures including ARM64, S390, and x86.
What should I do to protect my systems?
Apply the latest kernel updates provided by your Linux distribution and reboot your system to ensure all changes take effect.
Are these vulnerabilities being actively exploited?
Currently, there is no confirmation of active exploitation for these vulnerabilities, but they are critical and should be addressed promptly.