{"id":"USN-8685-1","summary":"bzip2 vulnerability","details":"It was discovered that bzip2 did not properly manage memory under certain\ncircumstances. An attacker could possibly use this issue to cause a crash,\nresulting in a denial of service.","modified":"2026-09-01T09:55:50.415111477Z","published":"2026-08-27T11:18:57Z","related":["UBUNTU-CVE-2026-42250"],"upstream":["CVE-2026-42250","UBUNTU-CVE-2026-42250"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8685-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-42250"}],"affected":[{"package":{"name":"bzip2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/bzip2?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.6-5ubuntu0.1~esm3"}]}],"versions":["1.0.6-4","1.0.6-5","1.0.6-5ubuntu0.1~esm1","1.0.6-5ubuntu0.1~esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_name":"bzip2","binary_version":"1.0.6-5ubuntu0.1~esm3"},{"binary_name":"lib32bz2-1.0","binary_version":"1.0.6-5ubuntu0.1~esm3"},{"binary_name":"lib64bz2-1.0","binary_version":"1.0.6-5ubuntu0.1~esm3"},{"binary_name":"libbz2-1.0","binary_version":"1.0.6-5ubuntu0.1~esm3"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:14.04:LTS","cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2026-42250"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8685-1.json"}},{"package":{"name":"bzip2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/bzip2?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.6-8ubuntu0.2+esm1"}]}],"versions":["1.0.6-8","1.0.6-8ubuntu0.1","1.0.6-8ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_name":"bzip2","binary_version":"1.0.6-8ubuntu0.2+esm1"},{"binary_name":"libbz2-1.0","binary_version":"1.0.6-8ubuntu0.2+esm1"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8685-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2026-42250"}],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}},{"package":{"name":"bzip2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/bzip2?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.6-8.1ubuntu0.2+esm1"}]}],"versions":["1.0.6-8.1","1.0.6-8.1ubuntu0.1","1.0.6-8.1ubuntu0.2"],"ecosystem_specific":{"binaries":[{"binary_name":"bzip2","binary_version":"1.0.6-8.1ubuntu0.2+esm1"},{"binary_name":"libbz2-1.0","binary_version":"1.0.6-8.1ubuntu0.2+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8685-1.json","cves_map":{"cves":[{"id":"CVE-2026-42250","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"score":"low","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:18.04:LTS"}}},{"package":{"name":"bzip2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/bzip2?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-2ubuntu0.1~esm1"}]}],"versions":["1.0.6-9.2","1.0.8-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.8-2ubuntu0.1~esm1","binary_name":"bzip2"},{"binary_version":"1.0.8-2ubuntu0.1~esm1","binary_name":"libbz2-1.0"}],"availability":"Available with Ubuntu Pro (Infra-only): 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