{"id":"AZL-81800","summary":"CVE-2026-34743 affecting package xz for versions less than 5.4.4-3","details":"XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.","modified":"2026-08-31T05:26:27Z","published":"2026-04-02T19:21:33Z","upstream":["CVE-2026-34743"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34743"}],"affected":[{"package":{"name":"xz","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/xz"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.4-3"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81800.json"}}],"schema_version":"1.9.0"}