Red Hat Security AdvisoryRHSA-2026:51604
kernel-rt security, bug fix, and enhancement update
Released 2026-08-07 · Red Hat rating Important · View on Red Hat →
Fixed in
- Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.186.1.rt14.471.el9_2, kernel-rt-core-5.14.0-284.186.1.rt14.471.el9_2, kernel-rt-debug-5.14.0-284.186.1.rt14.471.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.186.1.rt14.471.el9_2, kernel-rt-core-5.14.0-284.186.1.rt14.471.el9_2, kernel-rt-debug-5.14.0-284.186.1.rt14.471.el9_2 +11
Fixes 7 records
Priority MEDIUM 48
Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A…
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00544 · Published 2026-06-09 · Partial fix CWE-362
Priority LOW 39
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Hide shadow VMCS right after VMCLEAR free_nested() frees the shadow VMCS while vmcs01 still points to it.
CVSS 3.1HIGH 8.8· Local · Low privileges · No interaction · EPSS 0.00162 · Published 2026-08-04 · Fixed in 5.10.265, 5.15.216 +6 CWE-416
Priority LOW 36
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reject oversized nested action attrs Open vSwitch stores generated flow actions as nlattrs, whose nla_len field is u16.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.0038 · Published 2026-07-27 · Partial fix · 5.15.212, 6.1.178 +6 CWE-190
Priority LOW 35
In the Linux kernel, the following vulnerability has been resolved: ipc: limit next_id allocation to the valid ID range The checkpoint/restore sysctl path can request the next SysV IPC id through ids->next_id.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00215 · Published 2026-06-24 · Partial fix · 5.10.259, 5.15.210 +6 CWE-20
Priority LOW 35
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in iomap inline data write path The inline data buffer head (dibh) is being released prematurely in gfs2_iomap_begin() via rele…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00184 · Published 2026-05-27 · Partial fix · 5.10.252, 5.15.202 +6 CWE-826
Priority LOW 34
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O When completing emulation of instruction that generated a userspace exit for I/O,…
CVSS 3.1HIGH 7.9· Local · Low privileges · No interaction · EPSS 0.0017 · Published 2025-10-28 · Partial fix · 5.4.301, 5.10.246 +7
Priority LOW 33
In the Linux kernel, the following vulnerability has been resolved: xen/privcmd: fix double free via VMA splitting privcmd_vm_ops defines .close (privcmd_close), but neither .may_split nor .open.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00183 · Published 2026-04-30 · Partial fix · 5.10.254, 5.15.204 +6 CWE-415