{"id":"RLSA-2026:57254","summary":"Important: kernel-rt security, bug fix, and enhancement update","details":"The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() (CVE-2024-56602)\n\n* kernel: ip6_gre: Use cached t-\u003enet in ip6erspan_changelink() (CVE-2026-46120)\n\n* kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991)\n\n* kernel: mm/huge_memory: update file PMD counter before folio_put() (CVE-2026-53189)\n\n* kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888)\n\n* kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)\n\n* kernel: net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot (CVE-2026-64048)\n\n* kernel: smb: client: mask server-provided mode to 07777 in modefromsid (CVE-2026-64379)\n\n* kernel: smb/client: handle overlapping allocated ranges in fallocate (CVE-2026-68388)\n\nBug Fix(es) and Enhancement(s):\n\n* sfc: TX queue stalls and NIC resets caused by GFP_ATOMIC allocation failures after Rocky Linux 8.10 kernel update (JIRA:Rocky Linux-219767)\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":"2026-08-21T06:16:11.966979332Z","published":"2026-08-21T06:02:13.869371Z","upstream":["CVE-2024-56602","CVE-2026-46120","CVE-2026-52991","CVE-2026-53189","CVE-2026-63887","CVE-2026-63888","CVE-2026-64048","CVE-2026-64379","CVE-2026-68388"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:57254"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:57254"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2334501"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2482614"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492403"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492788"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502443"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502447"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2502589"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507135"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2513470"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:57254"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.18.0-553.157.1.rt7.498.el8_10"}],"database_specific":{"yum_repository":"NFV"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:57254.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}