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Critical · 9.8 CVE-2026-72041 EUVD-2026-58999GHSA-55rh-f38r-fhcc

espintcp: use sk_msg_free_partial to fix partial send

Published Aug 15, 2026 · Updated Oct 19, 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-5.8 Package: linux-aws-6.14 Package: linux-aws-6.17 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-7.0 Package: linux-aws-fips Package: linux-azure 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-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.17 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-7.0 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.15 Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.14 Package: linux-azure-fde-6.17 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fde-7.0 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 Package: linux-bluefield Package: linux-fips Package: linux-gcp 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-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.17 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-7.0 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-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 Package: linux-hwe-6.17 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-7.0 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 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-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.17 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-7.0 Package: linux-nvidia-bos Package: linux-nvidia-lowlatency 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-6.14 Package: linux-oem-6.17 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oem-7.0 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-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-oracle-7.0 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.17 Package: linux-realtime-6.8 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-6.14 Package: linux-riscv-6.17 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-riscv-7.0 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

espintcp: use sk_msg_free_partial to fix partial send

sk_msg_free_partial() ensures consistency of the skmsg at every
iteration, without having to manually handle uncharges and offsets.
This simplifies the code, and fixes some bugs in skmsg accounting when
we don't send the full contents.

Affected products

VendorProductAffectedFixed
Linux Linux 5.6 5.10.266

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 7.1.5-1 —
Debian 13 linux 6.12.100-1 —
Debian 12 linux 6.1.187-1 —
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 24.04 LTS linux-bluefield 6.8.0-1033.38 —
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1103.105 —
Ubuntu 26.04 LTS linux 7.0.0-34.34 USN-8816-1
Ubuntu 26.04 LTS linux-aws +1 7.0.0-1013.13 USN-8816-2, USN-8816-1
Ubuntu 26.04 LTS linux-azure 7.0.0-1017.17 USN-8888-1
Ubuntu 26.04 LTS linux-azure-fde 7.0.0-1016.16 USN-8888-1
Ubuntu 26.04 LTS linux-gke 7.0.0-1007.8 USN-8816-4
Ubuntu 26.04 LTS linux-ibm +1 7.0.0-1014.14 USN-8816-2, USN-8816-1
Ubuntu 26.04 LTS linux-nvidia 7.0.0-1025.26 USN-9043-1
Ubuntu 26.04 LTS linux-nvidia-bos 7.0.0-2022.23 USN-9003-1
Ubuntu 26.04 LTS linux-oracle 7.0.0-1012.12 USN-8816-1
Ubuntu 26.04 LTS linux-raspi 7.0.0-1020.20 USN-8816-1
Ubuntu 26.04 LTS linux-riscv +1 7.0.0-34.34.1 USN-8816-1
Ubuntu 24.04 LTS linux 6.8.0-147.147 USN-8917-1
Ubuntu 24.04 LTS linux-aws +1 6.8.0-1067.70 USN-9024-1, USN-8917-1
Ubuntu 24.04 LTS linux-aws-7.0 +1 7.0.0-1013.13~24.04.1 USN-8816-2, USN-8816-1
Ubuntu 24.04 LTS linux-azure-7.0 7.0.0-1017.17~24.04.1 USN-8888-2
Ubuntu 24.04 LTS linux-azure-fde 6.8.0-1069.76 USN-8918-1
Ubuntu 24.04 LTS linux-azure-fde-7.0 7.0.0-1016.16~24.04.1 USN-8888-2
Ubuntu 24.04 LTS linux-gcp +1 6.8.0-1071.79 USN-8918-1, USN-8917-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1066.74 USN-8917-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1052.56 USN-8917-1
Ubuntu 24.04 LTS linux-hwe-7.0 7.0.0-34.34~24.04.1 USN-8816-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1067.68 USN-8917-1
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-147.147.1 USN-8917-1
Ubuntu 24.04 LTS linux-nvidia-7.0 7.0.0-1024.25~24.04.1 USN-9003-1
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1067.70.1 USN-9040-1
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1035.38 USN-8781-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1064.67 USN-8917-1
Ubuntu 24.04 LTS linux-oracle-7.0 7.0.0-1012.12~24.04.1 USN-8816-3
Ubuntu 24.04 LTS linux-raspi 6.8.0-1068.72 USN-9025-1
Ubuntu 24.04 LTS linux-riscv +29 No fix yet —
Ubuntu 24.04 LTS linux-riscv-7.0 7.0.0-34.34.1~24.04.1 —
Ubuntu 24.04 LTS linux-vmware 6.8.0-1008.8 —
Ubuntu 22.04 LTS linux 5.15.0-202.212 USN-8961-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1119.126 USN-8961-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1069.74~22.04.1 USN-9024-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1125.134 USN-8961-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1073.82~22.04.1 USN-9026-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1124.133 —
Ubuntu 22.04 LTS linux-azure-fde-6.8 6.8.0-1071.78~22.04.1 USN-9026-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1120.130 USN-8961-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1073.81~22.04.1 USN-9024-1
Ubuntu 22.04 LTS linux-gke 5.15.0-1115.121 USN-8961-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1102.110 USN-8961-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-149.149~22.04.1 USN-9066-1
Ubuntu 22.04 LTS linux-ibm 5.15.0-1113.117 USN-8961-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1069.70~22.04.1 USN-9024-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1114.120 USN-8961-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1111.116 USN-8961-1
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-197.207 USN-8961-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-149.149.1~22.04.1 USN-9024-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1114.115 USN-8961-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1070.72 USN-8963-1
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1059.59 USN-8963-1
Ubuntu 22.04 LTS linux-oracle 5.15.0-1116.122 USN-8961-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1067.71~22.04.1 USN-9025-1
Ubuntu 22.04 LTS linux-raspi 5.15.0-1113.116 USN-9029-1
Ubuntu 22.04 LTS linux-riscv +34 No fix yet —
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2056.58 USN-9025-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1062.63 USN-8917-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.14 +1 No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1111.115 USN-8961-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1118.127 USN-8961-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1064.65~22.04.1 USN-9024-1
Ubuntu Pro FIPS-updates 24.04 LTS linux-aws-fips 6.8.0-1067.70+fips1 USN-8917-1
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-147.147+fips1 USN-8917-1
Ubuntu Pro FIPS-updates 24.04 LTS linux-gcp-fips +1 6.8.0-1071.79+fips1 USN-8918-1, USN-8917-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1119.126+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1125.134+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-202.212+fips1 USN-8961-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1120.130+fips1 USN-8961-1
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux-aws-5.15 5.15.0-1119.126~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-azure-5.15 5.15.0-1125.134~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-azure-fde-5.15 5.15.0-1124.133~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-gcp-5.15 5.15.0-1120.130~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-hwe-5.15 5.15.0-202.212~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-ibm-5.15 5.15.0-1113.117~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-intel-iotg-5.15 5.15.0-1114.120~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-197.207~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1070.72~20.04.1 USN-8963-1
Ubuntu Pro 20.04 LTS linux-oracle-5.15 5.15.0-1116.122~20.04.1 USN-8961-1
Ubuntu Pro 20.04 LTS linux-riscv-5.15 5.15.0-1113.117~20.04.2 —
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +5 6.4.0-150700.53.87.3 SUSE-SU-2026:4935-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.87.3.150700.17.49.2 SUSE-SU-2026:4935-1
SLES 15 SP7 kernel-obs-build 6.4.0-150700.53.87.2 SUSE-SU-2026:4935-1
SLES 15 SP7 kernel-syms 6.4.0-150700.53.87.1 SUSE-SU-2026:4935-1
SLES 15 SP6 kernel-64kb +6 6.4.0-150600.23.143.1 SUSE-SU-2026:4934-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.143.1.150600.12.66.3 SUSE-SU-2026:4934-1
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.195.1 SUSE-SU-2026:4936-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.195.1.150500.6.91.1 SUSE-SU-2026:4936-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.246.1 SUSE-SU-2026:4937-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.246.1.150400.24.124.1 SUSE-SU-2026:4937-1
Show 18 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 kernel-64kb +8 6.12.0-160000.40.1 SUSE-SU-2026:24446-1
SLES for SAP 16.0 kernel-default-base 6.12.0-160000.40.1.160000.2.29 SUSE-SU-2026:24446-1
SLES for SAP 15 SP6 kernel-default-base 6.4.0-150600.23.143.1.150600.12.66.3 SUSE-SU-2026:4934-1
SLES for SAP 15 SP6 kernel-docs +4 6.4.0-150600.23.143.1 SUSE-SU-2026:4934-1
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.195.1.150500.6.91.1 SUSE-SU-2026:4936-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.195.1 SUSE-SU-2026:4936-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.246.1.150400.24.124.1 SUSE-SU-2026:4937-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.246.1 SUSE-SU-2026:4937-1
SLES 16.0 kernel-64kb +8 6.12.0-160000.40.1 SUSE-SU-2026:24446-1, SUSE-SU-2026:24437-1
SLES 16.0 kernel-default-base 6.12.0-160000.40.1.160000.2.29 SUSE-SU-2026:24446-1
SLE Micro 6.2 kernel-default-base 6.12.0-160000.40.1.160000.2.29 SUSE-SU-2026:24422-1
SLE Micro 6.2 kernel-rt +5 6.12.0-160000.40.1 SUSE-SU-2026:24422-1, SUSE-SU-2026:24386-1
SLE Micro 6.1 kernel-default-base 6.4.0-159998.54.1.159998.21.39 SUSE-SU-2026:24379-1
SLE Micro 6.1 kernel-rt +4 6.4.0-159998.54.1 SUSE-SU-2026:24553-1, SUSE-SU-2026:24379-1
SLE Micro 6.0 kernel-default-base 6.4.0-159998.54.1.159998.21.40 SUSE-SU-2026:24371-1
SLE Micro 6.0 kernel-rt +4 6.4.0-159998.54.1 SUSE-SU-2026:24473-1, SUSE-SU-2026:24371-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.195.1.150500.6.91.1 SUSE-SU-2026:4936-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.167.2 SUSE-SU-2026:4938-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.195.1 SUSE-SU-2026:4936-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.246.1.150400.24.124.1 SUSE-SU-2026:4937-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.192.2 SUSE-SU-2026:4939-1
SLE Micro 5.4 kernel-source +1 5.14.21-150400.24.246.1 SUSE-SU-2026:4937-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.246.1.150400.24.124.1 SUSE-SU-2026:4937-1
SLE Micro 5.3 kernel-source +1 5.14.21-150400.24.246.1 SUSE-SU-2026:4937-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.87.3 SUSE-SU-2026:4935-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_22 1-150700.1.3.1 SUSE-SU-2026:4940-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_23 1-150700.15.3.2 SUSE-SU-2026:4935-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.143.1 SUSE-SU-2026:4934-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_33 1-150600.13.5.1 SUSE-SU-2026:4934-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.195.1 SUSE-SU-2026:4936-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_47 1-150500.11.3.1 SUSE-SU-2026:4936-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.246.1 SUSE-SU-2026:4937-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_61 1-150400.9.3.1 SUSE-SU-2026:4937-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.195.1 SUSE-SU-2026:4936-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.195.1.150500.6.91.1 SUSE-SU-2026:4936-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.246.1 SUSE-SU-2026:4937-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.246.1.150400.24.124.1 SUSE-SU-2026:4937-1
SUSE Real Time Module 15 SP7 kernel-rt +2 6.4.0-150700.7.81.1 SUSE-SU-2026:4940-1
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 kernel-default-base 6.12.0-160000.40.1.160000.2.29 openSUSE-SU-2026:22167-1
openSUSE Leap 16.0 kernel-rt +11 6.12.0-160000.40.1 openSUSE-SU-2026:22167-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.18.41-94.142 +1 1:1.0-0.amzn2023 ALAS2023-2026-2071, ALAS2023-2026-2057
Amazon Linux 2023 perf6.12 +11 1:6.12.100-125.179.amzn2023 ALAS2023-2026-2057
Amazon Linux 2023 perf6.18 +12 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071

Advisories 38

References