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Ubuntu Security Notices

USN-8966-1: Linux kernel vulnerabilities

Jürgen Groß discovered that the Xen network backend driver in the Linux kernel did not adequately limit the amount of queued packets when a guest did not process them. An attacker in a guest VM can use this to cause a denial of service (excessive kernel memory consumption) in the network backend domain. (CVE-2021-28714) It was discovered that the Bluetooth subsystem in the Linux kernel contained a use-after-free vuln…

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