{"schema_version": "1.7.0", "id": "RLSA-2026:89749", "modified": "2026-10-27T12:13:15.602172Z", "published": "2026-10-27T12:04:29.081572Z", "upstream": ["CVE-2026-34743"], "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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "xz", "purl": "pkg:rpm/rocky-linux/xz?distro=rocky-linux-9&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:5.2.5-8.el9_8.1"}], "database_specific": {"yum_repository": "BaseOS"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:89749"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2454589"}, {"type": "ADVISORY", "url": "https://access.redhat.com/errata/RHSA-2026:89749"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}], "database_specific": {"license": "CC-BY-4.0", "license_url": "https://creativecommons.org/licenses/by/4.0/", "source_advisory": "RHSA-2026:89749"}}