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Red Hat Security Advisory

RHSA-2026:51603

kernel security, bug fix, and enhancement update

Released 2026-08-07 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 7 records

TI-2025-09419 CVE-2025-10263 · GHSA-x9c8-763w-495x

Race condition in Arm C1-Ultra

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