{"id":"RLSA-2026:64787","summary":"Moderate: xz security update","details":"XZ Utils is an integrated collection of user-space file compression utilities based on the Lempel-Ziv-Markov chain algorithm (LZMA), which performs lossless data compression. The algorithm provides a high compression ratio while keeping the decompression time short.\n\nSecurity Fix(es):\n\n* xz: XZ Utils: Denial of Service via buffer overflow in index decoding (CVE-2026-34743)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-09-09T12:30:03.343426088Z","published":"2026-09-09T12:09:16.585859Z","upstream":["CVE-2026-34743"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:64787"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:64787"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2454589"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:64787"}],"affected":[{"package":{"name":"xz","ecosystem":"Rocky Linux:10","purl":"pkg:rpm/rocky-linux/xz?distro=rocky-linux-10&epoch=1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.6.2-4.el10_2.1"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:64787.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}