Description
A use-after-free flaw was found in the Linux kernel’s pipes functionality in how a user performs manipulations with the pipe post_one_notification() after free_pipe_info() that is already called. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | Linux kernel 5.18-rc8 | — |
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 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1021.25 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1021.26 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1024.30.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1019.25 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1017.20 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1004.6 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1015.17 | USN-5683-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1017.22 | USN-5703-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1019.23 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oem-5.17 +2 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1019.24 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1016.18 | USN-5667-1 |
| Ubuntu 22.04 LTS | linux-riscv | 5.15.0-1020.23 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1021.25~20.04.1 | USN-5667-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1021.26~20.04.1 | USN-5667-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1021.26~20.04.1.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1021.28~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1019.23~20.04.1 | — |
| 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 | USN-5667-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1017.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1019.24~20.04.1 | — |
| 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-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 | 5.15.0-1022.22 | — |
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 +3 | 5.14.21-150400.24.33.2 | SUSE-SU-2022:4072-1 |
| SLES 15 SP4 | kernel-azure | 5.14.21-150400.14.21.2 | SUSE-SU-2022:3998-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.33.2.150400.24.11.4 | SUSE-SU-2022:4072-1 |
| SLES 15 SP4 | kernel-syms +2 | 5.14.21-150400.24.33.1 | SUSE-SU-2022:4072-1 |
| SLES 15 SP4 | kernel-syms-azure +1 | 5.14.21-150400.14.21.1 | SUSE-SU-2022:3998-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.33.2 | SUSE-SU-2022:4072-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.33.2.150400.24.11.4 | SUSE-SU-2022:4072-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.33.2 | SUSE-SU-2022:4072-1 |
| 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_0 | 8-150400.4.21.1 | SUSE-SU-2022:4113-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_1 +1 | 5-150400.2.1 | SUSE-SU-2022:4039-1, SUSE-SU-2022:4035-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_5 | 1-150400.9.3.4 | SUSE-SU-2022:4072-1 |
| 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 +4 | 5.14.21-150400.24.33.1 | SUSE-SU-2022:4072-1 |
| openSUSE Leap 15.4 | kernel-64kb +5 | 5.14.21-150400.24.33.2 | SUSE-SU-2022:4072-1 |
| openSUSE Leap 15.4 | kernel-azure | 5.14.21-150400.14.21.2 | SUSE-SU-2022:3998-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.33.2.150400.24.11.4 | SUSE-SU-2022:4072-1 |
| openSUSE Leap 15.4 | kernel-rt +3 | 5.14.21-150400.15.5.1 | SUSE-SU-2022:4617-1 |
| openSUSE Leap 15.4 | kernel-syms-azure +1 | 5.14.21-150400.14.21.1 | SUSE-SU-2022:3998-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.70.1-1 | — |
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 |
Advisories 20
- 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
- USN-5683-1 linux-ibm vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-5703-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- USN-5667-1 linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15, linux-gcp, linux-gke, linux-gkeop, linux-hwe-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 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-2022:4072-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4617-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4113-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4035-1 Security update for the Linux Kernel (Live Patch 1 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3998-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4039-1 Security update for the Linux Kernel (Live Patch 2 for SLE 15 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-166-11 Siemens SIMATIC S7-1500 TM MFP Linux Kernel CISA ICS & IT advisories · Apr 9, 2024
- ICSA-23-166-10 Siemens SIMATIC S7-1500 TM MFP BIOS CISA ICS & IT advisories · Apr 9, 2024
- SSA-831302 SSA-831302: Vulnerabilities in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0 Siemens ProductCERT · Apr 9, 2024
- WID-SEC-2022-1661 Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Jun 28, 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