Red Hat Security Advisory

RHSA-2026:2821

kernel-rt security update

Released 2026-02-17 · Red Hat rating Moderate · View on Red Hat →

Fixed in

Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.105.1.rt7.446.el8_10, kernel-rt-core-4.18.0-553.105.1.rt7.446.el8_10, kernel-rt-debug-4.18.0-553.105.1.rt7.446.el8_10 +9
Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.105.1.rt7.446.el8_10, kernel-rt-core-4.18.0-553.105.1.rt7.446.el8_10, kernel-rt-debug-4.18.0-553.105.1.rt7.446.el8_10 +7

Fixes 3 records

TI-2023-30048 CVE-2023-53762 · GHSA-v6x6-vgmm-x298

Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync

LOW 38

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix UAF in hci_disconnect_all_sync Use-after-free can occur in hci_disconnect_all_sync if a connection is deleted by concurrent pro…

CVSS 3.1HIGH 8.8 Adjacent network No auth No interaction EPSS 0.00248 Published 2025-12-08 Partial fix · 6.1.189, 6.4.16 +2

TI-2025-26838 CVE-2025-40168 · GHSA-9cp7-m95w-q87h

smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

LOW 36

In the Linux kernel, the following vulnerability has been resolved: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().

CVSS 3.1HIGH 8.1 Network No auth No interaction EPSS 0.0042 Published 2025-11-12 Partial fix · 6.1.187, 6.6.156 +3

TI-2025-26974 CVE-2025-40304 · GHSA-6cgq-9674-3xfg

fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

LOW 33

In the Linux kernel, the following vulnerability has been resolved: fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds Add bounds checking to prevent writes past framebuffer boundaries when rendering te…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00144 Published 2025-12-08 Partial fix · 5.4.302, 5.10.247 +6