{"id":"USN-6383-1","summary":"linux, linux-aws, linux-aws-6.2, linux-azure, linux-azure-6.2, linux-azure-fde-6.2, linux-gcp, linux-gcp-6.2, linux-hwe-6.2, linux-ibm, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-6.2, linux-oracle, linux-raspi, linux-starfive vulnerabilities","details":"\nJana Hofmann, Emanuele Vannacci, Cedric Fournet, Boris Kopf, and Oleksii\nOleksenko discovered that some AMD processors could leak stale data from\ndivision operations in certain situations. A local attacker could possibly\nuse this to expose sensitive information. (CVE-2023-20588)\n\nIt was discovered that the ARM64 KVM implementation in the Linux kernel did\nnot properly restrict hypervisor memory access. An attacker in a guest VM\ncould use this to execute arbitrary code in the host OS. (CVE-2023-21264)\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not\nproperly handle L2CAP socket release, leading to a use-after-free\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-40283)\n\nIt was discovered that some network classifier implementations in the Linux\nkernel contained use-after-free vulnerabilities. A local attacker could use\nthis to cause a denial of service (system crash) or possibly execute\narbitrary code. (CVE-2023-4128)\n\nLonial Con discovered that the netfilter subsystem in the Linux kernel\ncontained a memory leak when handling certain element flush operations. A\nlocal attacker could use this to expose sensitive information (kernel\nmemory). (CVE-2023-4569)\n\n","modified":"2026-05-23T01:48:00.069987847Z","published":"2023-09-19T16:45:51Z","related":["UBUNTU-CVE-2023-20588","UBUNTU-CVE-2023-21264","UBUNTU-CVE-2023-40283","UBUNTU-CVE-2023-4128","UBUNTU-CVE-2023-4569"],"upstream":["CVE-2023-21264","CVE-2023-4128","UBUNTU-CVE-2023-21264","UBUNTU-CVE-2023-4128"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6383-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4128"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-21264"}],"affected":[{"package":{"name":"linux-aws-6.2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/linux-aws-6.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.0-1012.12~22.04.1"}]}],"versions":["6.2.0-1005.5~22.04.1","6.2.0-1006.6~22.04.1","6.2.0-1007.7~22.04.1","6.2.0-1008.8~22.04.1","6.2.0-1009.9~22.04.3","6.2.0-1010.10~22.04.1","6.2.0-1011.11~22.04.1"],"ecosystem_specific":{"availability":"No 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