{"id":"UBUNTU-CVE-2019-17543","details":"LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states \"only a few specific / uncommon usages of the API are at risk.\"","modified":"2025-07-16T08:14:31.565084Z","published":"2019-10-14T02:15:00Z","withdrawn":"2025-07-18T16:45:23Z","upstream":["CVE-2019-17543"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-17543"},{"type":"REPORT","url":"https://github.com/lz4/lz4/pull/756"},{"type":"REPORT","url":"https://github.com/lz4/lz4/pull/760"},{"type":"REPORT","url":"https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-17543"}],"affected":[{"package":{"name":"lz4","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/lz4@0.0~r131-2ubuntu3.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0~r131-2ubuntu3.1"}]}],"versions":["0.0~r131-2ubuntu2","0.0~r131-2ubuntu3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"0.0~r131-2ubuntu3.1","binary_name":"liblz4-1"},{"binary_name":"liblz4-1-dbg","binary_version":"0.0~r131-2ubuntu3.1"},{"binary_name":"liblz4-dev","binary_version":"0.0~r131-2ubuntu3.1"},{"binary_name":"liblz4-tool","binary_version":"0.0~r131-2ubuntu3.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17543.json"}},{"package":{"name":"lz4","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/lz4@1.9.2-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.2-2"}]}],"versions":["1.9.1-1","1.9.1-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.9.2-2","binary_name":"liblz4-1"},{"binary_name":"liblz4-1-dbgsym","binary_version":"1.9.2-2"},{"binary_version":"1.9.2-2","binary_name":"liblz4-dev"},{"binary_name":"liblz4-tool","binary_version":"1.9.2-2"},{"binary_name":"lz4","binary_version":"1.9.2-2"},{"binary_name":"lz4-dbgsym","binary_version":"1.9.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-17543.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}