{"id":"USN-6454-1","aliases":[],"status":"published","title":"linux, linux-lowlatency vulnerabilities","description":"Kyle 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\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)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2023-10-26T12:36:49.026131Z","modified":"2026-02-04T02:25:13Z","fixes":[{"ecosystem":"Ubuntu:23.10","package":"linux","fixed_in":["6.5.0-10.10"],"sources":["osv"]},{"ecosystem":"Ubuntu:23.10","package":"linux-lowlatency","fixed_in":["6.5.0-10.10.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:23.10","package":"linux","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.0-10.10"}]}],"versions":["6.2.0-20.20","6.2.0-21.21","6.3.0-7.7","6.5.0-5.5","6.5.0-7.7","6.5.0-9.9"]},{"source":"osv","ecosystem":"Ubuntu:23.10","package":"linux-lowlatency","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.0-10.10.1"}]}],"versions":["6.2.0-1003.3","6.3.0-7.7.1","6.5.0-5.5.1","6.5.0-8.8.1","6.5.0-9.9.1"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-6454-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-4921","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-5197","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-42756","tags":["report"]}],"sources":{"osv":[{"id":"USN-6454-1","title":"linux, linux-lowlatency vulnerabilities","description":"Kyle 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\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","status":"published","published":"2023-10-26T12:36:49.026131Z","modified":"2026-02-04T02:25:13.718954Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}