Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: vgic: Handle race between interrupt affinity change and LPI disabling
Hyunwoo Kim reports some really bad races should the following
situation occur:
- LPI-I is pending in vcpu-B's AP list
- vcpu-A writes to vcpu-B's RD to disable its LPIs
- vcpu-C moves I from B to C
If the last two race nicely enough, vgic_prune_ap_list() can drop
the irq and AP list locks, reacquire them, and in the interval
the irq has been freed. UAF follows.
The fix is two-fold:
- Before dropping the irq and ap_list locks, take a reference on
the irq
- Do not try to handle migration of the pending bit: there is no
expectation that this state is retained, as per the architecture
With that, we're sure that the interrupt is still around, and we
safely remove it from the AP list as it has no target at this
stage (unless another interrupt fires, but that's another story).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.8 | 6.1.191 |
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 | 7.1.5-1 | — |
| Debian 13 | linux | 6.12.115-2 | — |
| Debian 12 | linux | No fix yet | — |
| Debian 12 | linux-6.12 | 6.12.115-2~deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 24.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 26.04 LTS | linux | 7.0.0-34.34 | USN-8816-1 |
| Ubuntu 26.04 LTS | linux-aws +1 | 7.0.0-1013.13 | USN-8816-2, USN-8816-1 |
| Ubuntu 26.04 LTS | linux-azure | 7.0.0-1017.17 | USN-8888-1 |
| Ubuntu 26.04 LTS | linux-azure-fde | 7.0.0-1016.16 | USN-8888-1 |
| Ubuntu 26.04 LTS | linux-gke | 7.0.0-1007.8 | USN-8816-4 |
| Ubuntu 26.04 LTS | linux-ibm +1 | 7.0.0-1014.14 | USN-8816-2, USN-8816-1 |
| Ubuntu 26.04 LTS | linux-nvidia | 7.0.0-1025.26 | USN-9043-1 |
| Ubuntu 26.04 LTS | linux-nvidia-bos | 7.0.0-2022.23 | USN-9003-1 |
| Ubuntu 26.04 LTS | linux-oracle | 7.0.0-1012.12 | USN-8816-1 |
| Ubuntu 26.04 LTS | linux-raspi | 7.0.0-1020.20 | USN-8816-1 |
| Ubuntu 26.04 LTS | linux-riscv +1 | 7.0.0-34.34.1 | USN-8816-1 |
| Ubuntu 24.04 LTS | linux +43 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-aws-7.0 +1 | 7.0.0-1013.13~24.04.1 | USN-8816-2, USN-8816-1 |
| Ubuntu 24.04 LTS | linux-azure-7.0 | 7.0.0-1017.17~24.04.1 | USN-8888-2 |
| Ubuntu 24.04 LTS | linux-azure-fde-7.0 | 7.0.0-1016.16~24.04.1 | USN-8888-2 |
| Ubuntu 24.04 LTS | linux-hwe-7.0 | 7.0.0-34.34~24.04.1 | USN-8816-1 |
| Ubuntu 24.04 LTS | linux-nvidia-7.0 | 7.0.0-1024.25~24.04.1 | USN-9003-1 |
| Ubuntu 24.04 LTS | linux-nvidia-tegra | 6.8.0-1035.38 | USN-8781-1 |
| Ubuntu 24.04 LTS | linux-oracle-7.0 | 7.0.0-1012.12~24.04.1 | USN-8816-3 |
| Ubuntu 24.04 LTS | linux-riscv-7.0 | 7.0.0-34.34.1~24.04.1 | — |
| Ubuntu 22.04 LTS | linux +59 | No fix yet | — |
Show 16 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime +3 | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime +2 | 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 24.04 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | rv +75 | 5.14.0-687.58.1.el9_8 | RHSA-2026:83156 |
| RHEL 8 | kernel-rt +12 | 4.18.0-553.180.1.rt7.521.el8_10 | RHSA-2026:92208 |
| RHEL 8 | perf +26 | 4.18.0-553.180.1.el8_10 | RHSA-2026:92209 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | rv +73 | 5.14.0-687.58.1.el9_8 | ALSA-2026:83156 |
| AlmaLinux 8 | kernel-rt +9 | 4.18.0-553.180.1.rt7.521.el8_10 | ALSA-2026:92208 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.180.1.el8_10 | ALSA-2026:92209 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | kernel | 5.14.0-687.58.1.el9_8 | RLSA-2026:83156 |
| Rocky Linux 8 | kernel | 4.18.0-553.180.1.el8_10 | RXSA-2026:92209, RLSA-2026:92209 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.180.1.rt7.521.el8_10 | RLSA-2026:92208 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | kernel-64kb +7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 |
| SLES 15 SP7 | kernel-default-base | 6.4.0-150700.53.81.1.150700.17.45.1 | SUSE-SU-2026:4254-1 |
| SLES 15 SP6 | kernel-64kb +6 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.135.1.150600.12.62.4 | SUSE-SU-2026:4369-1 |
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.189.1 | SUSE-SU-2026:4595-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.189.1.150500.6.87.4 | SUSE-SU-2026:4595-1 |
| SLES 15 SP4 | kernel-64kb +2 | 5.14.21-150400.24.240.2 | SUSE-SU-2026:4284-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.240.2.150400.24.120.2 | SUSE-SU-2026:4284-1 |
| SLES 15 SP4 | kernel-docs +3 | 5.14.21-150400.24.240.1 | SUSE-SU-2026:4284-1 |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | kernel-64kb +8 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 |
| SLES for SAP 16.0 | kernel-default-base | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23902-1 |
| SLES for SAP 15 SP6 | kernel-default-base | 6.4.0-150600.23.135.1.150600.12.62.4 | SUSE-SU-2026:4369-1 |
| SLES for SAP 15 SP6 | kernel-docs +4 | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 |
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.189.1.150500.6.87.4 | SUSE-SU-2026:4595-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.189.1 | SUSE-SU-2026:4595-1 |
| SLES for SAP 15 SP4 | kernel-default | 5.14.21-150400.24.240.2 | SUSE-SU-2026:4284-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.240.2.150400.24.120.2 | SUSE-SU-2026:4284-1 |
| SLES for SAP 15 SP4 | kernel-docs +3 | 5.14.21-150400.24.240.1 | SUSE-SU-2026:4284-1 |
| SLES 16.0 | kernel-64kb +8 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1, SUSE-SU-2026:23897-1 |
| SLES 16.0 | kernel-default-base | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23902-1 |
| SLE Micro 6.2 | kernel-default-base | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23887-1 |
| SLE Micro 6.2 | kernel-rt +5 | 6.12.0-160000.38.1 | SUSE-SU-2026:23887-1, SUSE-SU-2026:23881-1 |
| SLE Micro 6.1 | kernel-default-base | 6.4.0-52.1.21.34 | SUSE-SU-2026:23529-1 |
| SLE Micro 6.1 | kernel-rt +4 | 6.4.0-52.1 | SUSE-SU-2026:23529-1, SUSE-SU-2026:23528-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-52.1.21.36 | SUSE-SU-2026:23481-1 |
| SLE Micro 6.0 | kernel-rt +4 | 6.4.0-52.1 | SUSE-SU-2026:23481-1, SUSE-SU-2026:23477-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.189.1.150500.6.87.4 | SUSE-SU-2026:4595-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.161.1 | SUSE-SU-2026:4347-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.189.1 | SUSE-SU-2026:4595-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.240.2 | SUSE-SU-2026:4284-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.240.2.150400.24.120.2 | SUSE-SU-2026:4284-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.186.1 | SUSE-SU-2026:4279-1 |
| SLE Micro 5.4 | kernel-source | 5.14.21-150400.24.240.1 | SUSE-SU-2026:4284-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.240.2 | SUSE-SU-2026:4284-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.240.2.150400.24.120.2 | SUSE-SU-2026:4284-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.186.1 | SUSE-SU-2026:4279-1 |
| SLE Micro 5.3 | kernel-source | 5.14.21-150400.24.240.1 | SUSE-SU-2026:4284-1 |
| SLE Live Patching 15 SP7 | kernel-default | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_20 | 1-150700.1.3.1 | SUSE-SU-2026:4120-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_21 | 1-150700.15.3.1 | SUSE-SU-2026:4254-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.135.1 | SUSE-SU-2026:4369-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_31 | 1-150600.13.3.4 | SUSE-SU-2026:4369-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.189.1 | SUSE-SU-2026:4595-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_45 | 1-150500.11.5.3 | SUSE-SU-2026:4595-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.240.2 | SUSE-SU-2026:4284-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_59 | 1-150400.9.5.1 | SUSE-SU-2026:4284-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.189.1 | SUSE-SU-2026:4595-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.189.1.150500.6.87.4 | SUSE-SU-2026:4595-1 |
| SLE HPC 15 SP4 | kernel-64kb +1 | 5.14.21-150400.24.240.2 | SUSE-SU-2026:4284-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.240.2.150400.24.120.2 | SUSE-SU-2026:4284-1 |
| SLE HPC 15 SP4 | kernel-docs +3 | 5.14.21-150400.24.240.1 | SUSE-SU-2026:4284-1 |
| SUSE Real Time Module 15 SP7 | kernel-rt +2 | 6.4.0-150700.7.75.1 | SUSE-SU-2026:4120-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | kernel-default-base | 6.12.0-160000.38.1.160000.2.22 | openSUSE-SU-2026:21910-1 |
| openSUSE Leap 16.0 | kernel-rt +11 | 6.12.0-160000.38.1 | openSUSE-SU-2026:21910-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.18.41-94.142 +2 | 1:1.0-0.amzn2023 | ALAS2023-2026-3103, ALAS2023-2026-2143, ALAS2023-2026-2071 |
| Amazon Linux 2023 | perf +11 | 1:6.1.186-228.374.amzn2023 | ALAS2023-2026-2143 |
| Amazon Linux 2023 | perf6.12 +11 | 1:6.12.103-129.197.amzn2023 | ALAS2023-2026-3103 |
| Amazon Linux 2023 | perf6.18 +12 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | rv +28 | 5.14.0-687.58.1.el9_8 | ELSA-2026-83156 |
| Oracle Linux 8 | perf +19 | 4.18.0-553.180.1.el8_10 | ELSA-2026-92209 |
Advisories 41
- RHSA-2026:92209 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:92208 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:83156 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-2852 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- USN-9043-1 linux-nvidia vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-9003-1 linux-nvidia-7.0, linux-nvidia-bos vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8888-2 linux-azure-7.0, linux-azure-fde-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8888-1 linux-azure, linux-azure-fde vulnerabilities Ubuntu Security Notices (USN) · Nov 12, 2026
- USN-8816-1 linux, linux-aws, linux-aws-7.0, linux-hwe-7.0, linux-ibm, linux-oracle, linux-raspi, linux-realtime vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8816-2 linux-gcp, linux-gcp-7.0, linux-oem-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8816-4 linux-gke vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8816-3 linux-oracle-7.0 vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- USN-8781-1 linux-nvidia-tegra vulnerabilities Ubuntu Security Notices (USN) · Nov 9, 2026
- RLSA-2026:92208 Important: kernel-rt security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 31, 2026
- RLSA-2026:92209 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 31, 2026
- RXSA-2026:92209 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 31, 2026
- ALSA-2026:83156 Important: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:92209 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:92208 Important: kernel-rt security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ELSA-2026-92209 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 29, 2026
- RLSA-2026:83156 Important: kernel security update Rocky Linux Security Advisories · Oct 16, 2026
- ELSA-2026-83156 Important: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 15, 2026
- SUSE-SU-2026:4595-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Oct 9, 2026
- SUSE-SU-2026:4254-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Oct 8, 2026
- SUSE-SU-2026:4369-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Oct 2, 2026
- SUSE-SU-2026:23902-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23881-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23887-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23897-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- ALAS2023-2026-3103 Important: kernel6.12 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- openSUSE-SU-2026:21910-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 25, 2026
- SUSE-SU-2026:4347-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 25, 2026
- SUSE-SU-2026:4279-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 23, 2026
- SUSE-SU-2026:4284-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 23, 2026
- ALAS2023-2026-2143 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 23, 2026
- SUSE-SU-2026:23528-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:23529-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 15, 2026
- ALAS2023-2026-2071 Important: kernel6.18 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 15, 2026
- SUSE-SU-2026:23477-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:4120-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:23481-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 14, 2026
References
- https://git.kernel.org/stable/c/7328cff91703ac4e93c200b20cebaa36d2f314ed
- https://git.kernel.org/stable/c/eb74f3feb68e64cf69f86cb806a15d8cfb6757f4
- https://git.kernel.org/stable/c/77c61235d66246dd6a5f55587f0afc273d832775
- https://git.kernel.org/stable/c/d19dca8194ebed371e624331c6be2cb73b562caf
- https://git.kernel.org/stable/c/b1a89d12d35a8256d2b170ced0b1c86851f3def2
- https://git.kernel.org/stable/c/7258770e5814f15e8308ebda82ac9acf6964ba8e