Description
In the Linux kernel, the following vulnerability has been resolved:
x86/tdx: Fix "in-kernel MMIO" check
TDX only supports kernel-initiated MMIO operations. The handle_mmio()
function checks if the #VE exception occurred in the kernel and rejects
the operation if it did not.
However, userspace can deceive the kernel into performing MMIO on its
behalf. For example, if userspace can point a syscall to an MMIO address,
syscall does get_user() or put_user() on it, triggering MMIO #VE. The
kernel will treat the #VE as in-kernel MMIO.
Ensure that the target MMIO address is within the kernel before decoding
instruction.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.19 | 6.1.113 |
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 | 6.11.2-1 | — |
| Debian 13 | linux | 6.11.2-1 | — |
| Debian 12 | linux | 6.1.115-1 | — |
| Debian 11 | linux-6.1 | 6.1.119-1~deb11u1 | DLA-4008-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux | 6.8.0-54.56 | USN-7301-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1023.25 | USN-7311-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1025.30 | USN-7384-1 |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1024.26 | USN-7304-1 |
| Ubuntu 24.04 LTS | linux-gke +1 | 6.8.0-1019.23 | USN-7304-1, USN-7303-3 |
| Ubuntu 24.04 LTS | linux-gkeop | 6.8.0-1006.8 | USN-7304-1 |
| Ubuntu 24.04 LTS | linux-ibm | 6.8.0-1022.22 | USN-7385-1 |
| Ubuntu 24.04 LTS | linux-lowlatency | 6.8.0-54.56.1 | USN-7301-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1022.25 | USN-7303-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1022.25.2 | USN-7303-1 |
| Ubuntu 24.04 LTS | linux-oem-6.11 | 6.11.0-1015.15 | USN-7310-1 |
| Ubuntu 24.04 LTS | linux-oem-6.8 | 6.8.0-1024.24 | USN-7386-1 |
| Ubuntu 24.04 LTS | linux-oracle | 6.8.0-1020.21 | USN-7303-2 |
| Ubuntu 24.04 LTS | linux-realtime | No fix yet | — |
| Ubuntu 24.04 LTS | linux-riscv | 6.8.0-53.55.1 | — |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1023.25~22.04.1 | USN-7311-1 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1025.30~22.04.1 | USN-7384-2 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1024.26~22.04.1 | USN-7303-3 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-57.59~22.04.1 | USN-7403-1 |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-6.8 | 6.8.0-54.56.1~22.04.1 | USN-7301-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1022.25~22.04.2 | USN-7303-1 |
| Ubuntu 22.04 LTS | linux-oracle-6.8 | 6.8.0-1020.21~22.04.1 | USN-7303-2 |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 | 6.8.0-53.55.1~22.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2018.19 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1016.17 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | rv +75 | 5.14.0-611.5.1.el9_7 | RHSA-2025:20518 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | rv +77 | 5.14.0-570.96.1.el9_6 | RHSA-2026:4011 |
| RHEL 9.4 EUS | bpftool | 7.3.0-427.114.1.el9_4 | RHSA-2026:4246 |
| RHEL 9.4 EUS | rv +64 | 5.14.0-427.114.1.el9_4 | RHSA-2026:4246 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | rv +73 | 5.14.0-611.5.1.el9_7 | ALSA-2025:20518 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | kernel | 5.14.0-611.5.1.el9_7 | RLSA-2025:20518 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | kernel-64kb +6 | 6.4.0-150600.23.30.1 | SUSE-SU-2024:4318-1 |
| SLES 15 SP6 | kernel-azure | 6.4.0-150600.8.17.2 | SUSE-SU-2024:3984-1 |
| SLES 15 SP6 | kernel-coco +3 | 6.4.0-15061.9.coco15sp6.1 | SUSE-SU-2024:4387-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.30.1.150600.12.12.6 | SUSE-SU-2024:4318-1 |
| SLES 15 SP6 | kernel-syms-azure +1 | 6.4.0-150600.8.17.1 | SUSE-SU-2024:3984-1 |
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.88.1 | SUSE-SU-2024:4364-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.72.1 | SUSE-SU-2024:3983-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.88.1.150500.6.39.4 | SUSE-SU-2024:4364-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.1 | kernel-default-base | 6.4.0-24.1.21.4 | SUSE-SU-2025:20247-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_4 | 1-1.1 | SUSE-SU-2025:20246-1 |
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0_Update_4 | 1-1.2 | SUSE-SU-2025:20247-1 |
| SLE Micro 6.1 | kernel-rt +1 | 6.4.0-22.1 | SUSE-SU-2025:20246-1 |
| SLE Micro 6.1 | kernel-source +2 | 6.4.0-24.1 | SUSE-SU-2025:20247-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-24.1.21.4 | SUSE-SU-2025:20164-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_4 | 1-1.1 | SUSE-SU-2025:20163-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0_Update_4 | 1-1.2 | SUSE-SU-2025:20164-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-22.1 | SUSE-SU-2025:20163-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-24.1 | SUSE-SU-2025:20164-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.88.1 | SUSE-SU-2024:4364-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.88.1.150500.6.39.4 | SUSE-SU-2024:4364-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.76.1 | SUSE-SU-2024:3985-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.30.1 | SUSE-SU-2024:4318-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_5 | 1-150600.1.3.1 | SUSE-SU-2024:3986-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_6 | 1-150600.13.3.5 | SUSE-SU-2024:4318-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.88.1 | SUSE-SU-2024:4364-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_22 | 1-150500.11.3.1 | SUSE-SU-2024:3985-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_21 | 1-150500.11.5.1 | SUSE-SU-2024:4364-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.17.1 | SUSE-SU-2024:3986-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.76.1 | SUSE-SU-2024:3985-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 6.11.8-1.1 | openSUSE-SU-2024:14500-1 |
| openSUSE Tumbleweed | kernel-source-longterm | 6.12.11-1.1 | openSUSE-SU-2025:14705-1 |
| openSUSE Leap 15.6 | dtb-aarch64 +10 | 6.4.0-150600.23.30.1 | SUSE-SU-2024:4318-1 |
| openSUSE Leap 15.6 | kernel-azure | 6.4.0-150600.8.17.2 | SUSE-SU-2024:3984-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.30.1.150600.12.12.6 | SUSE-SU-2024:4318-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.17.1 | SUSE-SU-2024:3986-1 |
| openSUSE Leap 15.6 | kernel-syms-azure +1 | 6.4.0-150600.8.17.1 | SUSE-SU-2024:3984-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.72.1 | SUSE-SU-2024:3983-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.76.1 | SUSE-SU-2024:3985-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-rt | 5.14.21-150500.13.76.1 | SUSE-SU-2024:3985-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.56.1-5 | — |
Advisories 33
- WID-SEC-2024-3251 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 11, 2026
- USN-7310-1 linux-oem-6.11 vulnerabilities Ubuntu Security Notices (USN) · Nov 3, 2026
- USN-7384-2 linux-azure-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7384-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 30, 2026
- USN-7386-1 linux-oem-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7304-1 linux-gcp, linux-gke, linux-gkeop vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7303-1 linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7301-1 linux, linux-lowlatency, linux-lowlatency-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7403-1 linux-hwe-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7303-2 linux-oracle, linux-oracle-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7303-3 linux-gcp-6.8, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7311-1 linux-aws, linux-aws-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7385-1 linux-ibm vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- ALSA-2025:20518 Moderate: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2025:20518 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- WID-SEC-2026-2253 IBM Security Verify Access: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- RHSA-2026:4246 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Aug 6, 2026
- RHSA-2026:4011 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Aug 6, 2026
- SUSE-SU-2025:20163-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20246-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20164-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20247-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4008-1 linux-6.1 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:3985-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4318-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3984-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3986-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4364-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14705-1 kernel-devel-longterm-6.12.11-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14500-1 kernel-devel-6.11.8-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:4387-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3983-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- RLSA-2025:20518 Moderate: kernel security update Rocky Linux Security Advisories · Nov 21, 2025
References
- https://git.kernel.org/stable/c/25703a3c980e21548774eea8c8a87a75c5c8f58c
- https://git.kernel.org/stable/c/4c0c5dcb5471de5fc8f0a1c4980e5815339e1cee
- https://git.kernel.org/stable/c/18ecd5b74682839e7cdafb7cd1ec106df7baa18c
- https://git.kernel.org/stable/c/bca2e29f7e26ce7c3522f8b324c0bd85612f68e3
- https://git.kernel.org/stable/c/d4fc4d01471528da8a9797a065982e05090e1d81