{"id":"USN-6736-1","summary":"klibc vulnerabilities","details":"It was discovered that zlib, vendored in klibc, incorrectly handled pointer\narithmetic. An attacker could use this issue to cause klibc to crash or to\npossibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)\n\nDanilo Ramos discovered that zlib, vendored in klibc, incorrectly handled\nmemory when performing certain deflating operations. An attacker could use\nthis issue to cause klibc to crash or to possibly execute arbitrary code.\n(CVE-2018-25032)\n\nEvgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled\nmemory when performing certain inflate operations. An attacker could use\nthis issue to cause klibc to crash or to possibly execute arbitrary code.\n(CVE-2022-37434)\n","modified":"2026-02-10T04:43:40Z","published":"2024-04-16T11:43:39Z","related":["UBUNTU-CVE-2016-9840","UBUNTU-CVE-2016-9841","UBUNTU-CVE-2018-25032","UBUNTU-CVE-2022-37434"],"upstream":["CVE-2016-9840","CVE-2016-9841","CVE-2018-25032","CVE-2022-37434","UBUNTU-CVE-2016-9840","UBUNTU-CVE-2016-9841","UBUNTU-CVE-2018-25032","UBUNTU-CVE-2022-37434"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6736-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-9840"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-9841"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-25032"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-37434"}],"affected":[{"package":{"name":"klibc","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/klibc@2.0.3-0ubuntu1.14.04.3+esm3?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3-0ubuntu1.14.04.3+esm3"}]}],"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","2.0.3-0ubuntu1.14.04.3+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"klibc-utils","binary_version":"2.0.3-0ubuntu1.14.04.3+esm3"},{"binary_name":"libklibc","binary_version":"2.0.3-0ubuntu1.14.04.3+esm3"},{"binary_name":"libklibc-dev","binary_version":"2.0.3-0ubuntu1.14.04.3+esm3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"id":"CVE-2016-9840","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2016-9841","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2018-25032","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-37434","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6736-1.json"}},{"package":{"name":"klibc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/klibc@2.0.4-8ubuntu1.16.04.4+esm2?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-8ubuntu1.16.04.4+esm2"}]}],"versions":["2.0.3-0ubuntu1","2.0.4-4","2.0.4-6","2.0.4-7","2.0.4-8","2.0.4-8ubuntu1","2.0.4-8ubuntu1.16.04.1","2.0.4-8ubuntu1.16.04.2","2.0.4-8ubuntu1.16.04.3","2.0.4-8ubuntu1.16.04.4","2.0.4-8ubuntu1.16.04.4+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"klibc-utils","binary_version":"2.0.4-8ubuntu1.16.04.4+esm2"},{"binary_name":"libklibc","binary_version":"2.0.4-8ubuntu1.16.04.4+esm2"},{"binary_name":"libklibc-dev","binary_version":"2.0.4-8ubuntu1.16.04.4+esm2"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2016-9840","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2016-9841","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2018-25032","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-37434","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6736-1.json"}},{"package":{"name":"klibc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/klibc@2.0.4-9ubuntu2.2+esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.4-9ubuntu2.2+esm1"}]}],"versions":["2.0.4-9ubuntu1","2.0.4-9ubuntu2","2.0.4-9ubuntu2.1","2.0.4-9ubuntu2.2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"klibc-utils","binary_version":"2.0.4-9ubuntu2.2+esm1"},{"binary_name":"libklibc","binary_version":"2.0.4-9ubuntu2.2+esm1"},{"binary_name":"libklibc-dev","binary_version":"2.0.4-9ubuntu2.2+esm1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2016-9840","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2016-9841","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2018-25032","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-37434","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6736-1.json"}},{"package":{"name":"klibc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/klibc@2.0.7-1ubuntu5.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.7-1ubuntu5.2"}]}],"versions":["2.0.6-1ubuntu1","2.0.6-1ubuntu2","2.0.7-1ubuntu1","2.0.7-1ubuntu3","2.0.7-1ubuntu4","2.0.7-1ubuntu5","2.0.7-1ubuntu5.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"klibc-utils","binary_version":"2.0.7-1ubuntu5.2"},{"binary_name":"libklibc","binary_version":"2.0.7-1ubuntu5.2"},{"binary_name":"libklibc-dev","binary_version":"2.0.7-1ubuntu5.2"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:20.04:LTS","cves":[{"id":"CVE-2016-9840","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2016-9841","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2018-25032","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-37434","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6736-1.json"}},{"package":{"name":"klibc","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/klibc@2.0.10-4ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.10-4ubuntu0.1"}]}],"versions":["2.0.8-6.1ubuntu2","2.0.10-3","2.0.10-4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"klibc-utils","binary_version":"2.0.10-4ubuntu0.1"},{"binary_name":"libklibc","binary_version":"2.0.10-4ubuntu0.1"},{"binary_name":"libklibc-dev","binary_version":"2.0.10-4ubuntu0.1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2016-9840","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2016-9841","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]},{"id":"CVE-2018-25032","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2022-37434","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6736-1.json"}}],"schema_version":"1.7.3"}