{"id":"ALSA-2026:70403","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: crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg (CVE-2025-39964)\n  * kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread (CVE-2023-54120)\n  * kernel: Bluetooth: L2CAP: Fix potential user-after-free (CVE-2023-54214)\n  * kernel: Bluetooth: btusb: revert use of devm_kzalloc in btusb (CVE-2025-71082)\n  * kernel: Bluetooth: SMP: force responder MITM requirements before building the pairing response (CVE-2026-43334)\n  * kernel: iommu/vt-d: Clear Present bit before tearing down PASID entry (CVE-2026-45894)\n  * kernel: RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv (CVE-2026-46043)\n  * kernel: RDMA/rxe: Reject unknown opcodes before ICRC processing (CVE-2026-46133)\n  * kernel: Bluetooth: serialize accept_q access (CVE-2026-52918)\n  * kernel: dm cache policy smq: fix missing locks in invalidating cache blocks (CVE-2026-53062)\n  * kernel: iommu/amd: Fix clone_alias() to use the original device's devid (CVE-2026-53053)\n  * kernel: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() (CVE-2026-53256)\n  * kernel: Bluetooth: RFCOMM: validate skb length in MCC handlers (CVE-2026-53254)\n  * kernel: keys: Pin request_key_auth payload in instantiate paths (CVE-2026-63823)\n  * kernel: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp (CVE-2026-63975)\n  * kernel: Bluetooth: HIDP: fix missing length checks in hidp_input_report() (CVE-2026-63947)\n  * kernel: nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path (CVE-2026-64534)\n  * kernel: RDMA/rxe: Fix a use-after-free problem in rxe_mmap (CVE-2026-64582)\n  * kernel: net/mlx5: Fix MCIA register buffer overflow on 32 dword reads (CVE-2026-68293)\n  * kernel: Linux kernel Bluetooth RFCOMM: Denial of Service via use-after-free in set_termios (CVE-2026-68188)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * Intel IOMMU: possible circular locking dependency (JIRA:AlmaLinux-243217)\n  * xfs: repeated xfs_trans_cancel called from xfs_iomap_write_direct (JIRA:AlmaLinux-251578)\n\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.\n","modified":"2026-09-23T15:11:41.146003113Z","published":"2026-09-22T00:00:00Z","related":["CVE-2023-54120","CVE-2023-54214","CVE-2025-39964","CVE-2025-71082","CVE-2026-43334","CVE-2026-45894","CVE-2026-46043","CVE-2026-46133","CVE-2026-52918","CVE-2026-53053","CVE-2026-53062","CVE-2026-53254","CVE-2026-53256","CVE-2026-63823","CVE-2026-63947","CVE-2026-63975","CVE-2026-64534","CVE-2026-64582","CVE-2026-68188","CVE-2026-68293"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:70403"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-54120"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2023-54214"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-39964"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2025-71082"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-43334"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-45894"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-46043"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-46133"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-52918"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53053"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53062"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53254"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-53256"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-63823"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-63947"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-63975"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64534"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-64582"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-68188"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-68293"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2403545"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2425183"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2426069"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2429054"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2468050"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2481940"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2482127"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2482550"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492092"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492278"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492310"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492717"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2492795"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502218"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502346"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2502388"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2507399"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2511448"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2513150"},{"type":"REPORT","url":"https://bugzilla.redhat.com/2513222"},{"type":"ADVISORY","url":"https://errata.almalinux.org/8/ALSA-2026-70403.html"}],"affected":[{"package":{"name":"kernel-rt","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.166.1.rt7.507.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:70403.json"}},{"package":{"name":"kernel-rt-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.166.1.rt7.507.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:70403.json"}},{"package":{"name":"kernel-rt-debug","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.166.1.rt7.507.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:70403.json"}},{"package":{"name":"kernel-rt-debug-core","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-553.166.1.rt7.507.el8_10"}]}],"database_specific":{"source":"https://github.com/AlmaLinux/osv-database/blob/master/advisories/almalinux8/ALSA-2026:70403.json"}},{"package":{"name":"kernel-rt-debug-devel","ecosystem":"AlmaLinux:8","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel"},"ranges":[{"type":"ECOSYSTEM","events":[{"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