Description
A NULL pointer dereference issue was found in KVM when releasing a vCPU with dirty ring support enabled. This flaw allows an unprivileged local attacker on the host to issue specific ioctl calls, causing a kernel oops condition that results in a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Kernel:KVM | Fixed in kernel v5.18-rc3 | — |
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 | 5.17.3-1 | — |
| Debian 13 | linux | 5.17.3-1 | — |
| Debian 12 | linux | 5.17.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-37.39 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1011.14 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1010.12 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1008.12 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1008.10 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1007.8 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1008.11 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1010.11 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-oem-5.17 | 5.17.0-1004.4 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1009.12 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1011.13 | USN-5469-1 |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv | 5.15.0-1012.13 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1008.9~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-41.44~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1008.11~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-42.45~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oem-5.14 | 5.14.0-1036.40 | — |
| Ubuntu 20.04 LTS | linux-riscv +22 | 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 22.04 LTS | linux-realtime | 5.15.0-1014.14 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | kernel-rt +12 | 5.14.0-162.6.1.rt21.168.el9_1 | RHSA-2022:7933 |
| RHEL 9 | perf +29 | 5.14.0-162.6.1.el9_1 | RHSA-2022:8267 |
| RHEL 8 | kernel-rt +12 | 4.18.0-425.3.1.rt7.213.el8 | RHSA-2022:7444 |
| RHEL 8 | perf +26 | 4.18.0-425.3.1.el8 | RHSA-2022:7683 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.28.1 | SUSE-SU-2022:3844-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.16.1 | SUSE-SU-2022:3585-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.28.1.150400.24.9.5 | SUSE-SU-2022:3844-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.28.1 | SUSE-SU-2022:3844-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.28.1.150400.24.9.5 | SUSE-SU-2022:3844-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.28.1 | SUSE-SU-2022:3844-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4-RT_Update_1 | 1-150400.1.3.1 | SUSE-SU-2022:4617-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_4 | 1-150400.9.3.5 | SUSE-SU-2022:3844-1 |
| SUSE Real Time Module 15 SP4 | kernel-rt +3 | 5.14.21-150400.15.5.1 | SUSE-SU-2022:4617-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dtb-aarch64 +10 | 5.14.21-150400.24.28.1 | SUSE-SU-2022:3844-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.16.1 | SUSE-SU-2022:3585-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.28.1.150400.24.9.5 | SUSE-SU-2022:3844-1 |
| openSUSE Leap 15.4 | kernel-rt +3 | 5.14.21-150400.15.5.1 | SUSE-SU-2022:4617-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.10-15.42 | 1.0-0.amzn2023 | ALAS2023-2023-070 |
| Amazon Linux 2023 | perf +12 | 6.1.10-15.42.amzn2023 | ALAS2023-2023-070 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.67.1-4 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bpftool +11 | 5.15.0-0.30.19.el8uek | ELSA-2022-9533 |
| Oracle Linux 8 | kernel-uek-container +1 | 5.15.0-0.30.19.el8 | ELSA-2022-9534 |
Advisories 12
- RHSA-2022:8267 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2022:7683 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2022:7933 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:7444 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- USN-5469-1 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- SUSE-SU-2022:4617-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3844-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3585-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2023-2023-070 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 10, 2024
- WID-SEC-2022-0165 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jul 13, 2023
- ELSA-2022-9534 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 30, 2022
- ELSA-2022-9533 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 30, 2022