{"id":"RXSA-2026:45115","summary":"Important: kernel security update","details":"The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026)\n\n* kernel: xfrm single-frag length not properly limited\n\n* kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)\n\n* kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)","modified":"2026-07-27T18:23:17.117642305Z","published":"2026-07-27T18:08:18.038173Z","upstream":["CVE-2025-40026","CVE-2026-52993","CVE-2026-53059"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RXSA-2026:45115"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2406712"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492277"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492437"}],"affected":[{"package":{"name":"kernel","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8-sig-cloud&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-553.147.1.el8_10.cloud.0.1"}],"database_specific":{"yum_repository":"cloud-kernel"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RXSA-2026:45115.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}