Description
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | Fixed in Linux kernel 5.15-rc1 | — |
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 | 5.15.3-1 | — |
| Debian 13 | linux | 5.15.3-1 | — |
| Debian 12 | linux | 5.15.3-1 | — |
| Debian 10 | linux-5.10 | 5.10.158-2~deb10u1 | DLA-3244-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-90.101 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1059.62 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-aws-5.11 | 5.11.0-1021.22~20.04.2 | USN-5135-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1063.66 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-azure-5.11 +1 | 5.11.0-1021.22~20.04.1 | USN-5135-1 |
| Ubuntu 20.04 LTS | linux-azure-5.8 | 5.8.0-1043.46~20.04.1 | USN-5120-1 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1021.24 | USN-5137-2 |
| Ubuntu 20.04 LTS | linux-gcp +1 | 5.4.0-1057.61 | USN-5137-2, USN-5137-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.11 | 5.11.0-1022.24~20.04.1 | USN-5135-1 |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1055.58 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1026.27 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.11 | 5.11.0-40.44~20.04.2 | USN-5135-1 |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1007.8 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1049.51 | USN-5137-1 |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1050.52 | USN-5115-1 |
| Ubuntu 20.04 LTS | linux-oem-5.13 | 5.13.0-1017.21 | USN-5135-1, USN-5117-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1046.50 | USN-5137-2 |
| Ubuntu 20.04 LTS | linux-riscv +9 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.11 | 5.11.0-1022.23~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-162.170 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1115.122 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1059.62~18.04.1 | USN-5137-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1126.139 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1063.66~18.04.1 | USN-5137-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1030.35 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1111.125 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 +1 | 5.4.0-1057.61~18.04.1 | USN-5137-2, USN-5137-1 |
| Ubuntu 18.04 LTS | linux-gke-5.4 | 5.4.0-1055.58~18.04.1 | USN-5137-2 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1026.27~18.04.1 | USN-5137-1 |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-90.101~18.04.1 | USN-5137-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1102.104 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1083.91 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1046.50~18.04.1 | USN-5137-2 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1098.104 | USN-5136-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1115.124 | USN-5136-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1036.42 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2056.58 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2038.42 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1072.81 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2021.23 | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1115.122~16.04.1 | USN-5136-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1126.139~16.04.1 | USN-5136-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1111.125~16.04.1 | USN-5136-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-162.170~16.04.1 | USN-5136-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1083.91~16.04.1 | USN-5136-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1126.139~14.04.1 | USN-5136-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-372.9.1.rt7.166.el8 | RHSA-2022:1975 |
| RHEL 8 | perf +26 | 4.18.0-372.9.1.el8 | RHSA-2022:1988 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | perf +19 | 4.18.0-372.9.1.el8 | ALSA-2022:1988 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-372.9.1.el8 | RLSA-2022:1988 |
| Rocky Linux 8 | kernel-rt | 4.18.0-372.9.1.rt7.166.el8 | RLSA-2022:1975 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-59.24.1 | SUSE-SU-2021:3387-1, SUSE-SU-2021:3205-1 |
| SLES 15 SP3 | kernel-azure | 5.3.18-38.22.2 | SUSE-SU-2021:3179-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.24.1.18.12.1 | SUSE-SU-2021:3387-1, SUSE-SU-2021:3205-1 |
| SLES 15 SP3 | kernel-syms-azure +1 | 5.3.18-38.22.1 | SUSE-SU-2021:3179-1 |
| SLES 15 SP2 | kernel-azure | 5.3.18-18.66.2 | SUSE-SU-2021:3178-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.83.2.9.38.3 | SUSE-SU-2021:3207-1 |
| SLES 15 SP2 | kernel-docs +3 | 5.3.18-24.83.2 | SUSE-SU-2021:3207-1 |
| SLES 15 SP2 | kernel-syms +1 | 5.3.18-24.83.1 | SUSE-SU-2021:3207-1 |
| SLES 15 SP2 | kernel-syms-azure +1 | 5.3.18-18.66.1 | SUSE-SU-2021:3178-1 |
| SLES 15 SP1 | kernel-docs +4 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SLES 15 SP1 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
| SLES 12 SP5 | kernel-azure | 4.12.14-16.73.2 | SUSE-SU-2021:3192-1 |
| SLES 12 SP5 | kernel-docs +3 | 4.12.14-122.88.1 | SUSE-SU-2021:3206-1 |
| SLES 12 SP5 | kernel-obs-build | 4.12.14-122.88.2 | SUSE-SU-2021:3206-1 |
| SLES 12 SP5 | kernel-syms-azure +1 | 4.12.14-16.73.1 | SUSE-SU-2021:3192-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.83.2 | SUSE-SU-2021:3972-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | kernel-docs +3 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SLES for SAP 15 SP1 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
| SLES for SAP 12 SP5 | kernel-azure | 4.12.14-16.73.2 | SUSE-SU-2021:3192-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.88.1 | SUSE-SU-2021:3206-1 |
| SLES for SAP 12 SP5 | kernel-syms-azure +1 | 4.12.14-16.73.1 | SUSE-SU-2021:3192-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.83.2 | SUSE-SU-2021:3972-1 |
| SLE Real Time 12 SP5 | kernel-rt +1 | 4.12.14-10.57.2 | SUSE-SU-2021:3217-1 |
| SLE Real Time 12 SP5 | kernel-syms-rt +1 | 4.12.14-10.57.1 | SUSE-SU-2021:3217-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-59.24.1 | SUSE-SU-2021:3387-1, SUSE-SU-2021:3205-2 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-59.24.1.18.12.1 | SUSE-SU-2021:3387-1, SUSE-SU-2021:3205-2 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-57.1 | SUSE-SU-2021:3415-1 |
| SLE Micro 5.0 | kernel-default | 5.3.18-24.83.2 | SUSE-SU-2021:3207-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.83.2.9.38.3 | SUSE-SU-2021:3207-1 |
| SLE Micro 5.0 | kernel-rt | 5.3.18-51.2 | SUSE-SU-2021:3177-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.24.1 | SUSE-SU-2021:3387-1, SUSE-SU-2021:3205-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_6 | 1-7.5.1 | SUSE-SU-2021:3205-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_7 | 1-7.3.1 | SUSE-SU-2021:3387-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.83.2 | SUSE-SU-2021:3207-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_19 | 1-5.3.4 | SUSE-SU-2021:3207-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_27 | 1-3.3.1 | SUSE-SU-2021:3876-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.88.1 | SUSE-SU-2021:3206-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_23 | 1-8.5.1 | SUSE-SU-2021:3206-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.83.2 | SUSE-SU-2021:3972-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_23 | 1-6.3.1 | SUSE-SU-2021:3972-1 |
| SLE HPC 15 SP1 | kernel-docs +3 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SLE HPC 15 SP1 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-57.1 | SUSE-SU-2021:3415-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +1 | 5.3.18-51.2 | SUSE-SU-2021:3177-1 |
| SUSE Real Time Module 15 SP2 | kernel-syms-rt +1 | 5.3.18-51.1 | SUSE-SU-2021:3177-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.83.2 | SUSE-SU-2021:3972-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.83.2 | SUSE-SU-2021:3972-1 |
| SUSE Enterprise Storage 6 | kernel-docs +3 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SUSE Enterprise Storage 6 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 5.14.6-1.4 | openSUSE-SU-2024:13704-1, openSUSE-SU-2024:10728-1 |
| openSUSE Leap 15.3 | dtb-aarch64 +7 | 5.3.18-59.24.1 | openSUSE-SU-2021:3387-1, openSUSE-SU-2021:3205-1 |
| openSUSE Leap 15.3 | kernel-azure | 5.3.18-38.22.2 | openSUSE-SU-2021:3179-1 |
| openSUSE Leap 15.3 | kernel-debug +4 | 4.12.14-197.102.2 | openSUSE-SU-2021:3876-1, openSUSE-SU-2021:3387-1, openSUSE-SU-2021:3205-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.24.1.18.12.1 | openSUSE-SU-2021:3387-1, openSUSE-SU-2021:3205-1 |
| openSUSE Leap 15.3 | kernel-syms-azure +1 | 5.3.18-38.22.1 | openSUSE-SU-2021:3179-1 |
| openSUSE Leap 15.2 | kernel-debug +5 | 5.3.18-lp152.92.2 | openSUSE-SU-2021:1271-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.92.2.lp152.8.42.3 | openSUSE-SU-2021:1271-1 |
| openSUSE Leap 15.2 | kernel-docs +2 | 5.3.18-lp152.92.1 | openSUSE-SU-2021:1271-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-372.9.1.el8 | ELSA-2022-1988 |
| Oracle Linux 7 | perf +10 | 4.14.35-2047.543.3.el7uek | ELSA-2024-12868 |
Advisories 40
- ALSA-2022:1988 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:1988 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2022:1975 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
- USN-5136-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5137-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-kvm vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5135-1 linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oem-5.13, linux-oracle, linux-oracle-5.11, linux-raspi vulnerability Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5137-2 linux-bluefield, linux-gke-5.4, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5120-1 linux-azure-5.8 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5115-1 linux-oem-5.10 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- USN-5117-1 linux-oem-5.13 vulnerabilities Ubuntu Security Notices (USN) · Sep 14, 2026
- DLA-3244-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:1975 Important: kernel-rt security and bug fix update Rocky Linux Security Advisories · Feb 4, 2026
- RLSA-2022:1988 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2021:3179-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3876-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3217-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3179-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3387-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3205-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3205-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3415-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3177-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3207-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3972-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3192-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3178-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3387-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10728-1 kernel-devel-5.14.6-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1271-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3876-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3206-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2021:3205-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-0219 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Dec 9, 2024
- ELSA-2024-12868 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 6, 2024
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- WID-SEC-2023-1432 Siemens SIMATIC S7: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2023
- WID-SEC-2022-1461 IBM Spectrum Protect: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 20, 2023
- ELSA-2022-1988 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022