Description
A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | Not Known | — |
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 11 | linux | 5.10.226-1 | DLA-3912-1 |
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 | 5.4.0-146.163 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1099.107 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1105.111 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1060.66 | USN-6020-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1102.111 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1096.103 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1066.70 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1046.51 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1013.15 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1088.94 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1098.107 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1082.93 | USN-5980-1 |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1023.27 | USN-6151-1 |
| Ubuntu 18.04 LTS | linux | 4.15.0-208.220 | USN-5984-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1153.166 | USN-5984-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1099.107~18.04.1 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1162.177 | USN-5927-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1105.111~18.04.1 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1062.67 | USN-5984-1 |
| Ubuntu 18.04 LTS | linux-gcp +15 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1147.163 | USN-5991-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1102.111~18.04.2 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-146.163~18.04.1 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1046.51~18.04.1 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1137.142 | USN-5984-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1116.127 | USN-5984-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1098.107~18.04.1 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1082.93~18.04.1 | USN-5985-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1129.137 | USN-5984-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1148.158 | USN-6030-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 8 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 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1099.107+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1105.111+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1074.83 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1102.111+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2092.98 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2071.77 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1108.119 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2055.60 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1088.95 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-239.273 | USN-6014-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1155.170 | USN-6001-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1153.166~16.04.1 | USN-5981-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1162.177~16.04.1 | USN-5975-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1147.163~16.04.1 | USN-6009-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-208.219~16.04.1 | USN-5981-1 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1118.128 | USN-6014-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1116.127~16.04.1 | USN-5981-1 |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1117.123 | USN-6013-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1162.177~14.04.1 | USN-5924-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-239.273~14.04.1 | USN-6014-1 |
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 | 5.3.18-59.27.1 | SUSE-SU-2021:3387-1 |
| SLES 15 SP3 | kernel-azure +1 | 5.3.18-38.25.2 | SUSE-SU-2021:3338-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.27.1.18.15.1 | SUSE-SU-2021:3387-1 |
| SLES 15 SP3 | kernel-syms-azure | 5.3.18-38.25.1 | SUSE-SU-2021:3338-1 |
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.69.1 | SUSE-SU-2021:3337-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.86.2.9.40.2 | SUSE-SU-2021:3447-1 |
| SLES 15 SP2 | kernel-docs +4 | 5.3.18-24.86.2 | SUSE-SU-2021:3447-1 |
| SLES 15 SP2 | kernel-syms | 5.3.18-24.86.1 | SUSE-SU-2021:3447-1 |
| SLES 15 SP2 | kmod | 25-6.10.1 | SUSE-SU-2021:3447-1 |
| SLES 15 SP2 | perl-Bootloader | 0.931-3.5.1 | SUSE-SU-2021:3447-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.1 | kernel-default | 5.3.18-59.27.1 | SUSE-SU-2021:3387-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-59.27.1.18.15.1 | SUSE-SU-2021:3387-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-57.1 | SUSE-SU-2021:3415-1 |
| SLE Micro 5.0 | kernel-default | 5.3.18-24.86.2 | SUSE-SU-2021:3447-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.86.2.9.40.2 | SUSE-SU-2021:3447-1 |
| SLE Micro 5.0 | kernel-rt | 5.3.18-54.1 | SUSE-SU-2021:3339-1 |
| SLE Micro 5.0 | kmod | 25-6.10.1 | SUSE-SU-2021:3447-1 |
| SLE Micro 5.0 | perl-Bootloader | 0.931-3.5.1 | SUSE-SU-2021:3447-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.27.1 | SUSE-SU-2021:3387-1 |
| 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 | 5.3.18-24.86.2 | SUSE-SU-2021:3447-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_20 | 1-5.3.2 | SUSE-SU-2021:3447-1 |
| 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 +3 | 5.3.18-54.1 | SUSE-SU-2021:3339-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | dtb-aarch64 +11 | 5.3.18-59.27.1 | openSUSE-SU-2021:3387-1 |
| openSUSE Leap 15.3 | kernel-azure +1 | 5.3.18-38.25.2 | openSUSE-SU-2021:3338-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.27.1.18.15.1 | openSUSE-SU-2021:3387-1 |
| openSUSE Leap 15.3 | kernel-syms-azure | 5.3.18-38.25.1 | openSUSE-SU-2021:3338-1 |
| openSUSE Leap 15.3 | kmod | 25-6.10.1 | openSUSE-SU-2021:3447-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.95.1.lp152.8.44.1 | openSUSE-SU-2021:1357-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.95.1 | openSUSE-SU-2021:1357-1 |
| openSUSE Leap 15.2 | kmod | 25-lp152.8.3.1 | openSUSE-SU-2021:1365-1 |
| openSUSE Leap 15.2 | kmod-testsuite | 25-lp152.8.3.2 | openSUSE-SU-2021:1365-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.35.1-4 | — |
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.70.1-1 | — |
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 | kernel-uek +4 | 5.4.17-2136.311.6.el8uek | ELSA-2022-9828 |
| Oracle Linux 7 | kernel-uek-container +1 | 5.4.17-2136.311.6.el8 | ELSA-2022-9829 |
| Oracle Linux 7 | perf +3 | 5.4.17-2136.311.6.el7uek | ELSA-2022-9828 |
Advisories 36
- ALSA-2022:1988 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- USN-6151-1 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6014-1 linux, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6020-1 linux-bluefield vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6030-1 linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6013-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6009-1 linux-gcp vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5980-1 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-kvm, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5991-1 linux-gcp-4.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5981-1 linux-aws-hwe, linux-hwe, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5984-1 linux, linux-aws, linux-dell300x, linux-kvm, linux-oracle, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5985-1 linux-aws-5.4, linux-azure-5.4, linux-gcp-5.4, linux-hwe-5.4, linux-ibm-5.4, linux-oracle-5.4, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6001-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5975-1 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5924-1 linux-azure, linux-azure, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-5927-1 linux-azure-4.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 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
- DLA-3912-1 linux - 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-2021:3339-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3337-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3447-1 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-2021:3447-1 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-2021:3338-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1365-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3338-1 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-2021:1357-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-0515 IBM Spectrum Protect: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 8, 2023
- ELSA-2022-9828 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 22, 2022
- ELSA-2022-9829 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 21, 2022
- ELSA-2022-1988 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022