{"id":"USN-5379-1","summary":"klibc vulnerabilities","details":"It was discovered that klibc did not properly perform\nsome mathematical operations, leading to an integer overflow.\nAn attacker could possibly use this issue to cause a crash,\nresulting in a denial of service, or possibly execute\narbitrary code. (CVE-2021-31870)\n\nIt was discovered that klibc did not properly handled some\nmemory allocations on 64 bit systems. An attacker could\npossibly use this issue to cause a crash, resulting in a\ndenial of service, or possibly execute arbitrary code.\n(CVE-2021-31871)\n\nIt was discovered that klibc did not properly handled some file\nsizes values on 32 bit systems. An attacker could possibly use\nthis issue to cause a crash, resulting in a denial of service,\nor possibly execute arbitrary code. (CVE-2021-31872)\n\nIt was discovered that klibc did not properly handled some\nmemory allocations. An attacker could possibly use this issue\nto cause a crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2021-31873)\n","modified":"2026-02-10T04:42:34Z","published":"2022-04-18T11:37:31Z","related":["UBUNTU-CVE-2021-31870","UBUNTU-CVE-2021-31871","UBUNTU-CVE-2021-31872","UBUNTU-CVE-2021-31873"],"upstream":["CVE-2021-31870","CVE-2021-31871","CVE-2021-31872","CVE-2021-31873","UBUNTU-CVE-2021-31870","UBUNTU-CVE-2021-31871","UBUNTU-CVE-2021-31872","UBUNTU-CVE-2021-31873"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5379-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-31870"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-31871"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-31872"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-31873"}],"affected":[{"package":{"name":"klibc","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/klibc@2.0.3-0ubuntu1.14.04.3+esm2?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-0ubuntu1.14.04.3+esm2"}]}],"versions":["2.0.1-3.1ubuntu2","2.0.2-1ubuntu1","2.0.2-1ubuntu2","2.0.3-0ubuntu1","2.0.3-0ubuntu1.14.04.1","2.0.3-0ubuntu1.14.04.2","2.0.3-0ubuntu1.14.04.3"],"ecosystem_specific":{"availability":"Available 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