Description
A null pointer dereference issue was found in the sctp network protocol in net/sctp/stream_sched.c in Linux Kernel. If stream_in allocation is failed, stream_out is freed which would further be accessed. A local user could use this flaw to crash the system or potentially cause a denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux | Linux Kernel prior to Kernel 5.19 RC17 | — |
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-oracle | 5.15.0-1019.24 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1016.18 | — |
| Ubuntu 22.04 LTS | linux-riscv +5 | 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 +14 | 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 8 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 18.04 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 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +5 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux-gcp +4 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | No fix yet | — |
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 |
| RHEL 8 | kernel-rt +12 | 4.18.0-477.10.1.rt7.274.el8_8 | RHSA-2023:2736 |
| RHEL 8 | perf +26 | 4.18.0-477.10.1.el8_8 | RHSA-2023:2951 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Hypervisor 4 | perf +2 | 4.18.0-372.80.1.el8_6 | RHSA-2023:7398 |
| RHEL 8.6 EUS | perf +26 | 4.18.0-372.80.1.el8_6 | RHSA-2023:7398 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.31.1 | SUSE-SU-2023:4071-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.20.1 | SUSE-SU-2023:4058-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.31.1.150500.6.13.1 | SUSE-SU-2023:4071-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.92.1 | SUSE-SU-2023:4072-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.69.1 | SUSE-SU-2023:4057-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.92.1.150400.24.42.1 | SUSE-SU-2023:4072-1 |
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.166.1.150200.9.83.1 | SUSE-SU-2023:4030-1 |
| SLES 15 SP2 | kernel-docs | 5.3.18-150200.24.166.2 | SUSE-SU-2023:4030-1 |
| SLES 15 SP2 | kernel-syms +4 | 5.3.18-150200.24.166.1 | SUSE-SU-2023:4030-1 |
Show 18 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.166.1.150200.9.83.1 | SUSE-SU-2023:4030-1 |
| SLES for SAP 15 SP2 | kernel-docs | 5.3.18-150200.24.166.2 | SUSE-SU-2023:4030-1 |
| SLES for SAP 15 SP2 | kernel-syms +4 | 5.3.18-150200.24.166.1 | SUSE-SU-2023:4030-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.31.1 | SUSE-SU-2023:4071-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.31.1.150500.6.13.1 | SUSE-SU-2023:4071-1 |
| SLE Micro 5.5 | kernel-rt | 5.14.21-150500.13.18.1 | SUSE-SU-2023:3988-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.92.1 | SUSE-SU-2023:4072-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.92.1.150400.24.42.1 | SUSE-SU-2023:4072-1 |
| SLE Micro 5.4 | kernel-rt | 5.14.21-150400.15.56.1 | SUSE-SU-2023:4093-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.92.1 | SUSE-SU-2023:4072-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.92.1.150400.24.42.1 | SUSE-SU-2023:4072-1 |
| SLE Micro 5.3 | kernel-rt | 5.14.21-150400.15.56.1 | SUSE-SU-2023:4093-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.144.1 | SUSE-SU-2023:4142-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.144.1 | SUSE-SU-2023:4142-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.31.1 | SUSE-SU-2023:4071-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_6 +1 | 1-150500.11.3.1 | SUSE-SU-2023:4071-1, SUSE-SU-2023:3988-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.92.1 | SUSE-SU-2023:4072-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4-RT_Update_14 | 1-150400.1.3.1 | SUSE-SU-2023:4093-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_19 | 1-150400.9.3.1 | SUSE-SU-2023:4072-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_37 | 1-150300.7.5.1 | SUSE-SU-2023:4095-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.166.1 | SUSE-SU-2023:4030-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_41 | 1-150200.5.3.1 | SUSE-SU-2023:4030-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.166.1.150200.9.83.1 | SUSE-SU-2023:4030-1 |
| SLE HPC 15 SP2 | kernel-docs | 5.3.18-150200.24.166.2 | SUSE-SU-2023:4030-1 |
| SLE HPC 15 SP2 | kernel-syms +4 | 5.3.18-150200.24.166.1 | SUSE-SU-2023:4030-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.18.1 | SUSE-SU-2023:3988-1 |
| SUSE Real Time Module 15 SP4 | kernel-rt +3 | 5.14.21-150400.15.56.1 | SUSE-SU-2023:4093-1 |
| SUSE Manager Server 4.2 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SUSE Manager Server 4.2 | kernel-source +3 | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SUSE Manager Proxy 4.2 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
| SUSE Manager Proxy 4.2 | kernel-source +2 | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.138.1 | SUSE-SU-2023:4095-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.138.1.150300.18.80.2 | SUSE-SU-2023:4095-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +10 | 5.14.21-150500.55.31.1 | SUSE-SU-2023:4071-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.20.1 | SUSE-SU-2023:4058-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.31.1.150500.6.13.1 | SUSE-SU-2023:4071-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.18.1 | SUSE-SU-2023:3988-1 |
| openSUSE Leap 15.4 | dtb-aarch64 +10 | 5.14.21-150400.24.92.1 | SUSE-SU-2023:4072-2 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.69.1 | SUSE-SU-2023:4057-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.92.1.150400.24.42.1 | SUSE-SU-2023:4072-2 |
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 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.111.1-1 | — |
Advisories 17
- RHSA-2023:2951 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2023:2458 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2023:2736 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:2148 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:7398 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- SUSE-SU-2023:4072-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4142-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4093-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4030-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4057-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4058-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3988-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4071-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4095-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4072-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2023-2023-070 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Apr 10, 2024
- WID-SEC-2023-1037 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Nov 21, 2023