{"id":"USN-6446-1","summary":"linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15,linux-nvidia, linux-oracle, linux-raspi vulnerabilities","details":"\nRoss Lagerwall discovered that the Xen netback backend driver in the Linux\nkernel did not properly handle certain unusual packets from a\nparavirtualized network frontend, leading to a buffer overflow. An attacker\nin a guest VM could use this to cause a denial of service (host system\ncrash) or possibly execute arbitrary code. (CVE-2023-34319)\n\nBien Pham discovered that the netfiler subsystem in the Linux kernel\ncontained a race condition, leading to a use-after-free vulnerability. A\nlocal user could use this to cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2023-4244)\n\nKyle Zeng discovered that the networking stack implementation in the Linux\nkernel did not properly validate skb object size in certain conditions. An\nattacker could use this cause a denial of service (system crash) or\npossibly execute arbitrary code. (CVE-2023-42752)\n\nKyle Zeng discovered that the netfiler subsystem in the Linux kernel did\nnot properly calculate array offsets, leading to a out-of-bounds write\nvulnerability. A local user could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-42753)\n\nKyle Zeng discovered that the IPv4 Resource Reservation Protocol (RSVP)\nclassifier implementation in the Linux kernel contained an out-of-bounds\nread vulnerability. A local attacker could use this to cause a denial of\nservice (system crash). Please note that kernel packet classifier support\nfor RSVP has been removed to resolve this vulnerability. (CVE-2023-42755)\n\nKyle Zeng discovered that the netfilter subsystem in the Linux kernel\ncontained a race condition in IP set operations in certain situations. A\nlocal attacker could use this to cause a denial of service (system crash).\n(CVE-2023-42756)\n\nBing-Jhong Billy Jheng discovered that the Unix domain socket\nimplementation in the Linux kernel contained a race condition in certain\nsituations, leading to a use-after-free vulnerability. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2023-4622)\n\nBudimir Markovic discovered that the qdisc implementation in the Linux\nkernel did not properly validate inner classes, leading to a use-after-free\nvulnerability. A local user could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-4623)\n\nAlex Birnberg discovered that the netfilter subsystem in the Linux kernel\ndid not properly validate register length, leading to an out-of- bounds\nwrite vulnerability. A local attacker could possibly use this to cause a\ndenial of service (system crash). (CVE-2023-4881)\n\nIt was discovered that the Quick Fair Queueing scheduler implementation in\nthe Linux kernel did not properly handle network packets in certain\nconditions, leading to a use after free vulnerability. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2023-4921)\n\nKevin Rich discovered that the netfilter subsystem in the Linux kernel did\nnot properly handle removal of rules from chain bindings in certain\ncircumstances, leading to a use-after-free vulnerability. A local attacker\ncould possibly use this to cause a denial of service (system crash) or\nexecute arbitrary code. (CVE-2023-5197)\n\n","modified":"2026-04-24T09:47:23.510575849Z","published":"2023-10-20T00:14:36Z","related":["UBUNTU-CVE-2023-34319","UBUNTU-CVE-2023-4244","UBUNTU-CVE-2023-42752","UBUNTU-CVE-2023-42753","UBUNTU-CVE-2023-42755","UBUNTU-CVE-2023-42756","UBUNTU-CVE-2023-4622","UBUNTU-CVE-2023-4623","UBUNTU-CVE-2023-4881","UBUNTU-CVE-2023-4921","UBUNTU-CVE-2023-5197"],"upstream":["CVE-2023-42756","CVE-2023-4881","UBUNTU-CVE-2023-42756","UBUNTU-CVE-2023-4881"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6446-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-4881"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-42756"}],"affected":[{"package":{"name":"linux-aws-5.15","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/linux-aws-5.15@5.15.0-1048.53~20.04.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.0-1048.53~20.04.1"}]}],"versions":["5.15.0-1014.18~20.04.1","5.15.0-1015.19~20.04.1","5.15.0-1017.21~20.04.1","5.15.0-1019.23~20.04.1","5.15.0-1020.24~20.04.1","5.15.0-1021.25~20.04.1","5.15.0-1022.26~20.04.1","5.15.0-1023.27~20.04.1","5.15.0-1026.30~20.04.2","5.15.0-1027.31~20.04.1","5.15.0-1028.32~20.04.1","5.15.0-1030.34~20.04.1","5.15.0-1031.35~20.04.1","5.15.0-1033.37~20.04.1","5.15.0-1034.38~20.04.1","5.15.0-1035.39~20.04.1","5.15.0-1036.40~20.04.1","5.15.0-1037.41~20.04.1","5.15.0-1038.43~20.04.1","5.15.0-1039.44~20.04.1","5.15.0-1040.45~20.04.1","5.15.0-1041.46~20.04.1","5.15.0-1043.48~20.04.1","5.15.0-1044.49~20.04.1","5.15.0-1045.50~20.04.1","5.15.0-1047.52~20.04.1"],"ecosystem_specific":{"availability":"No 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