Description
In the linux kernel, if IMA appraisal is used with the "ima_appraise=log" boot param, lockdown can be defeated with kexec on any machine when Secure Boot is disabled or unavailable. IMA prevents setting "ima_appraise=log" from the boot param when Secure Boot is enabled, but this does not cover cases where lockdown is used without Secure Boot. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity, Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Oracle | Oracle Linux | Oracle Linux: 7, Oracle Linux: 8, Oracle Linux: 9 | — |
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 | 5.18.16-1 | — |
| Debian 13 | linux | 5.18.16-1 | — |
| Debian 12 | linux | 5.18.16-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-50.56 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1021.25 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1021.26 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1024.30.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1019.25 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1017.20 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1004.6 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1015.17 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1017.22 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1019.23 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oem-5.17 | 5.17.0-1030.31 | USN-6031-1 |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1019.24 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1016.18 | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-128.144 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1086.93 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1021.25~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1094.100 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1021.26~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1047.52 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1090.98 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1021.28~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1084.90 | — |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1019.23~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1054.57 | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1005.7~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-50.56~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1034.38 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1017.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1005.7 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1076.81 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1084.92 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1019.24~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1071.81 | — |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1022.26~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1086.93~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1094.100~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1092.101~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-128.144~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1034.38~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1084.92~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1071.81~18.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1022.22 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1086.93+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1094.100+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1062.70 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1092.101+fips1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.0.0-284.11.1.el9_2 | RHSA-2023:2458 |
| RHEL 9 | kernel-rt +14 | 5.14.0-284.11.1.rt14.296.el9_2 | RHSA-2023:2148 |
| RHEL 9 | perf +48 | 5.14.0-284.11.1.el9_2 | RHSA-2023:2458 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | bpftool | 7.0.0-284.11.1.el9_2 | ALSA-2023:2458 |
| AlmaLinux 9 | kernel-rt +13 | 5.14.0-284.11.1.rt14.296.el9_2 | ALSA-2023:2148 |
| AlmaLinux 9 | perf +45 | 5.14.0-284.11.1.el9_2 | ALSA-2023:2458 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.18.1 | SUSE-SU-2022:2803-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.10.1 | SUSE-SU-2022:2722-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.18.1.150400.24.5.4 | SUSE-SU-2022:2803-1 |
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-150300.38.75.1 | SUSE-SU-2022:2741-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.18.1 | SUSE-SU-2022:2803-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_2 | 1-150400.9.5.2 | SUSE-SU-2022:2803-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_23 | 1-150300.7.3.1 | SUSE-SU-2022:2875-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_29 | 1-150200.5.5.1 | SUSE-SU-2022:2809-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-1 |
| SUSE Manager Server 4.1 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Manager Server 4.1 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Manager Retail Branch Server 4.1 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Manager Retail Branch Server 4.1 | kernel-docs +4 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Manager Proxy 4.1 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Manager Proxy 4.1 | kernel-docs +4 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Enterprise Storage 7 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Enterprise Storage 7 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dtb-aarch64 | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1, SUSE-SU-2022:2803-1 |
| openSUSE Leap 15.4 | kernel-64kb +9 | 5.14.21-150400.24.18.1 | SUSE-SU-2022:2803-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.10.1 | SUSE-SU-2022:2722-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.18.1.150400.24.5.4 | SUSE-SU-2022:2803-1 |
| openSUSE Leap 15.3 | dtb-aarch64 +11 | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-150300.38.75.1 | SUSE-SU-2022:2741-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.2 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-2 |
| openSUSE Leap Micro 5.2 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-2 |
| openSUSE Leap Micro 5.2 | kernel-rt | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-2 |
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 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.0.0-284.11.1.el9_2 | ELSA-2023-2458 |
| Oracle Linux 9 | perf +25 | 5.14.0-284.11.1.el9_2 | ELSA-2023-2458 |
| Oracle Linux 8 | bpftool +11 | 5.15.0-0.30.20.1.el9uek | ELSA-2022-9601 |
| Oracle Linux 8 | kernel-uek-container +1 | 5.15.0-0.30.20.1.el8 | ELSA-2022-9602 |
| Oracle Linux 7 | kernel-uek +4 | 5.4.17-2136.309.5.el8uek | ELSA-2022-9709, ELSA-2022-9609 |
| Oracle Linux 7 | kernel-uek-container +1 | 5.4.17-2136.309.5.el8 | ELSA-2022-9710, ELSA-2022-9612 |
| Oracle Linux 7 | perf +3 | 5.4.17-2136.309.5.el7uek | ELSA-2022-9709, ELSA-2022-9609 |
Advisories 25
- USN-6031-1 linux-oem-5.17 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- ALSA-2023:2458 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2023:2148 Important: kernel-rt security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:2458 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2023:2148 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- SSA-794697 SSA-794697: Vulnerabilities in the Additional GNU/Linux Subsystem of the SIMATIC S7-1500 TM MFP Before V1.1 Siemens ProductCERT · Oct 13, 2026
- SUSE-SU-2022:2875-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2741-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2809-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2722-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2803-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2892-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2875-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2892-2 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
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- WID-SEC-2022-0747 Linux Kernel: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Jul 18, 2023
- WID-SEC-2023-1432 Siemens SIMATIC S7: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2023
- ELSA-2023-2458 Important: kernel security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 15, 2023
- ELSA-2022-9709 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 15, 2022
- ELSA-2022-9710 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 15, 2022
- ELSA-2022-9602 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 19, 2022
- ELSA-2022-9609 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 19, 2022
- ELSA-2022-9601 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 19, 2022
- ELSA-2022-9612 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 19, 2022
References
- Github commit issue-tracking
- Oracle Advisory vendor-advisory