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Ubuntu Security Notice USN-5978-1

Posted Mar 28, 2023

Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5978-1 - It was discovered that the network queuing discipline implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

tags | advisory, denial of service, arbitrary, kernel, local

systems | linux, ubuntu

advisories | CVE-2022-2196, CVE-2022-27672, CVE-2022-4382, CVE-2022-4842, CVE-2023-0394, CVE-2023-1073, CVE-2023-1074, CVE-2023-1075, CVE-2023-1078, CVE-2023-1281, CVE-2023-23559, CVE-2023-26545

SHA-256 | 71cd680be098e8fe6428fa0aea346ac7a027ec8f5c40c0e9df401cd20a6cbc28

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