Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: x86: wean fast IN from emulator_pio_in
Use __emulator_pio_in() directly for fast PIO instead of bouncing through
emulator_pio_in() now that __emulator_pio_in() fills "val" when handling
in-kernel PIO. vcpu->arch.pio.count is guaranteed to be '0', so this a
pure nop.
emulator_pio_in_emulated is now the last caller of emulator_pio_in.
No functional change intended.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.10 | 6.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.0.2-1 | — |
| Debian 13 | linux | 6.0.2-1 | — |
| Debian 12 | linux | 6.0.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv +20 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +49 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +21 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +12 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux-gcp +4 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.182.1 | SUSE-SU-2026:3595-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.182.1.150500.6.85.2 | SUSE-SU-2026:3595-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.235.1 | SUSE-SU-2026:3593-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.235.1.150400.24.118.3 | SUSE-SU-2026:3593-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.182.1.150500.6.85.2 | SUSE-SU-2026:3595-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.182.1 | SUSE-SU-2026:3595-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.235.1.150400.24.118.3 | SUSE-SU-2026:3593-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.235.1 | SUSE-SU-2026:3593-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.182.1.150500.6.85.2 | SUSE-SU-2026:3595-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.156.1 | SUSE-SU-2026:3617-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.182.1 | SUSE-SU-2026:3595-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.235.1.150400.24.118.3 | SUSE-SU-2026:3593-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.181.1 | SUSE-SU-2026:3616-1 |
| SLE Micro 5.4 | kernel-source +1 | 5.14.21-150400.24.235.1 | SUSE-SU-2026:3593-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.235.1.150400.24.118.3 | SUSE-SU-2026:3593-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.181.1 | SUSE-SU-2026:3616-1 |
| SLE Micro 5.3 | kernel-source +1 | 5.14.21-150400.24.235.1 | SUSE-SU-2026:3593-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.182.1 | SUSE-SU-2026:3595-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_44 | 1-150500.11.5.1 | SUSE-SU-2026:3595-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.235.1 | SUSE-SU-2026:3593-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_58 | 1-150400.9.7.1 | SUSE-SU-2026:3593-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.182.1 | SUSE-SU-2026:3595-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.182.1.150500.6.85.2 | SUSE-SU-2026:3595-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.235.1 | SUSE-SU-2026:3593-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.235.1.150400.24.118.3 | SUSE-SU-2026:3593-1 |
Advisories 4
- SUSE-SU-2026:3595-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 9, 2026
- SUSE-SU-2026:3616-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3617-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3593-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Aug 13, 2026