Skip to content
OpenAdvisories
High · 7.8 CVE-2023-53559 EUVD-2025-32314GHSA-6v4x-gf5x-r6w5

ip_vti: fix potential slab-use-after-free in decode_session6

Published Oct 4, 2025 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-intel Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

ip_vti: fix potential slab-use-after-free in decode_session6

When ip_vti device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when ip_vti device sends IPv6 packets.
As commit f855691975bb ("xfrm6: Fix the nexthdr offset in
_decode_session6.") showed, xfrm_decode_session was originally intended
only for the receive path. IP6CB(skb)->nhoff is not set during
transmission. Therefore, set the cb field in the skb to 0 before
sending packets.

Affected products

VendorProductAffectedFixed
Linux Linux 3.19 4.14.324

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.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.4.13-1 —
Debian 13 linux 6.4.13-1 —
Debian 12 linux 6.1.52-1 —
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1033.35 —
Ubuntu 24.04 LTS linux-intel +9 No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-91.101 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1051.56 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1053.61 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1053.61.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1048.56 —
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1048.53 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1034.40 —
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1044.47 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1046.52 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1042.42 —
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1020.20 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1007.7 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1049.55 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1027.31 —
Ubuntu 20.04 LTS linux 5.4.0-169.187 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1116.126 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1051.56~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1121.128 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1053.61~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1076.82 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1120.129 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1048.56~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-91.101~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1063.68 —
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1044.47~20.04.1 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1046.52~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1028.29 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1104.111 —
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1020.20~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1115.124 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1049.55~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1100.112 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1047.51~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1035.39 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 12 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1044.46 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1052.58 —
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 5.4.0-1116.126+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1121.128+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1090.100 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1120.129+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips No fix yet —
Ubuntu Pro 18.04 LTS linux +5 No fix yet —
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1116.126~18.04.1 —
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1121.128~18.04.1 —
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1120.129~18.04.1 —
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-169.187~18.04.1 —
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1063.68~18.04.1 —
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1115.124~18.04.1 —
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1100.112~18.04.1 —
Ubuntu Pro 16.04 LTS linux +7 No fix yet —
Ubuntu Pro 14.04 LTS linux-aws +2 No fix yet —
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.3.0-427.13.1.el9_4 RHSA-2024:2394
RHEL 9 rv +64 5.14.0-427.13.1.el9_4 RHSA-2024:2394
RHEL 8 perf +26 4.18.0-553.el8_10 RHSA-2024:3138

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 kernel 4.18.0-553.123.1.el8_10.cloud.0.1 RXSA-2024:3138
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +6 6.4.0-150700.53.22.1 SUSE-SU-2025:4057-1
SLES 15 SP7 kernel-azure +2 6.4.0-150700.20.18.1 SUSE-SU-2025:4132-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.22.1.150700.17.15.1 SUSE-SU-2025:4057-1
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.78.1 SUSE-SU-2025:4140-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.55.1 SUSE-SU-2025:4128-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.78.1.150600.12.34.2 SUSE-SU-2025:4140-1
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.127.1 SUSE-SU-2025:4320-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.127.1.150500.6.61.1 SUSE-SU-2025:4320-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SLES 15 SP3 kernel-64kb +5 5.3.18-150300.59.226.2 SUSE-SU-2025:4188-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.226.2.150300.18.134.2 SUSE-SU-2025:4188-1
SLES 15 SP3 kernel-docs 5.3.18-150300.59.226.3 SUSE-SU-2025:4188-1
SLES 15 SP3 kernel-syms 5.3.18-150300.59.226.1 SUSE-SU-2025:4188-1
Show 24 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 12 SP5 kernel-syms +2 4.12.14-122.280.1 SUSE-SU-2025:4189-1
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.127.1.150500.6.61.1 SUSE-SU-2025:4320-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.127.1 SUSE-SU-2025:4320-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.226.2.150300.18.134.2 SUSE-SU-2025:4188-1
SLES for SAP 15 SP3 kernel-docs 5.3.18-150300.59.226.3 SUSE-SU-2025:4188-1
SLES for SAP 15 SP3 kernel-source +3 5.3.18-150300.59.226.2 SUSE-SU-2025:4188-1
SLES for SAP 15 SP3 kernel-syms 5.3.18-150300.59.226.1 SUSE-SU-2025:4188-1
SLE Micro 6.1 kernel-default-base 6.4.0-36.1.21.13 SUSE-SU-2025:21056-1
SLE Micro 6.1 kernel-rt +1 6.4.0-38.1 SUSE-SU-2025:21064-1
SLE Micro 6.1 kernel-source +2 6.4.0-36.1 SUSE-SU-2025:21056-1
SLE Micro 6.0 kernel-default-base 6.4.0-36.1.21.13 SUSE-SU-2025:21040-1
SLE Micro 6.0 kernel-rt +1 6.4.0-38.1 SUSE-SU-2025:21052-1
SLE Micro 6.0 kernel-source +2 6.4.0-36.1 SUSE-SU-2025:21040-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.127.1.150500.6.61.1 SUSE-SU-2025:4320-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.112.1 SUSE-SU-2025:4149-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.127.1 SUSE-SU-2025:4320-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.136.1 SUSE-SU-2025:4139-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.136.1 SUSE-SU-2025:4139-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.226.2 SUSE-SU-2025:4188-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.226.2.150300.18.134.2 SUSE-SU-2025:4188-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.226.1 SUSE-SU-2025:4135-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.22.1 SUSE-SU-2025:4057-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_6 1-150700.1.3.1 SUSE-SU-2025:4141-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_6 1-150700.15.3.1 SUSE-SU-2025:4057-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.78.1 SUSE-SU-2025:4140-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_17 1-150600.1.3.1 SUSE-SU-2025:4301-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_17 1-150600.13.5.1 SUSE-SU-2025:4140-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.127.1 SUSE-SU-2025:4320-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_32 1-150500.11.3.1 SUSE-SU-2025:4320-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_46 1-150400.9.5.1 SUSE-SU-2025:4111-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.226.2 SUSE-SU-2025:4188-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_63 1-150300.7.5.2 SUSE-SU-2025:4188-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.280.1 SUSE-SU-2025:4189-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_74 1-8.5.1 SUSE-SU-2025:4189-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.127.1 SUSE-SU-2025:4320-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.127.1.150500.6.61.1 SUSE-SU-2025:4320-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SLE HPC 15 SP3 kernel-64kb +4 5.3.18-150300.59.226.2 SUSE-SU-2025:4188-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.226.2.150300.18.134.2 SUSE-SU-2025:4188-1
SLE HPC 15 SP3 kernel-docs 5.3.18-150300.59.226.3 SUSE-SU-2025:4188-1
SLE HPC 15 SP3 kernel-syms 5.3.18-150300.59.226.1 SUSE-SU-2025:4188-1
SUSE Real Time Module 15 SP7 kernel-rt +2 6.4.0-150700.7.22.1 SUSE-SU-2025:4141-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.58.1 SUSE-SU-2025:4301-1
SUSE Manager Server LTS 4.3 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SUSE Manager Server LTS 4.3 kernel-syms +3 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SUSE Manager Proxy LTS 4.3 kernel-default-base 5.14.21-150400.24.184.1.150400.24.94.2 SUSE-SU-2025:4111-1
SUSE Manager Proxy LTS 4.3 kernel-syms +2 5.14.21-150400.24.184.1 SUSE-SU-2025:4111-1
SUSE Enterprise Storage 7.1 kernel-64kb +4 5.3.18-150300.59.226.2 SUSE-SU-2025:4188-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.226.2.150300.18.134.2 SUSE-SU-2025:4188-1
SUSE Enterprise Storage 7.1 kernel-docs 5.3.18-150300.59.226.3 SUSE-SU-2025:4188-1
SUSE Enterprise Storage 7.1 kernel-syms 5.3.18-150300.59.226.1 SUSE-SU-2025:4188-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +10 6.4.0-150600.23.78.1 SUSE-SU-2025:4140-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.55.1 SUSE-SU-2025:4128-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.78.1.150600.12.34.2 SUSE-SU-2025:4140-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.58.1 SUSE-SU-2025:4301-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.49-69.116 1.0-0.amzn2023 ALAS2023-2023-330
Amazon Linux 2023 perf +12 6.1.49-69.116.amzn2023 ALAS2023-2023-330
Amazon Linux 2 kernel-livepatch-4.14.326-245.539 1.0-0.amzn2 ALAS2-2023-2264
Amazon Linux 2 perf +8 4.14.326-245.539.amzn2 ALAS2-2023-2264

Advisories 24

References