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OpenAdvisories
Critical · 9.8 CVE-2026-23112 EUVD-2026-6171GHSA-jjrf-jfrm-p64x

nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec

Published Feb 13, 2026 · Updated Oct 19, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel 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-6.14 Package: linux-aws-6.17 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 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-5.4 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-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.14 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 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-5.4 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-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-6.14 Package: linux-hwe-6.17 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 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-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-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-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-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-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 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-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: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec

nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU
length or offset exceeds sg_cnt and then use bogus sg->length/offset
values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining
entries, and sg->length/offset before building the bvec.

Affected products

VendorProductAffectedFixed
Linux Linux 5.0 5.10.253

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 6.18.10-1 —
Debian 13 linux 6.12.73-1 DSA-6141-1
Debian 12 linux 6.1.164-1 DSA-6163-1
Debian 11 linux 5.10.251-1 DLA-4498-1
Debian 11 linux-6.1 6.1.164-1~deb11u1 DLA-4499-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 24.04 LTS linux-bluefield 6.8.0-1022.26 —
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1090.92 —
Ubuntu 25.10 linux 6.17.0-23.23 —
Ubuntu 25.10 linux-aws +2 6.17.0-1013.13 USN-8245-1
Ubuntu 25.10 linux-azure-fde No fix yet —
Ubuntu 25.10 linux-oracle 6.17.0-1012.12 —
Ubuntu 25.10 linux-raspi 6.17.0-1014.14 —
Ubuntu 25.10 linux-realtime 6.17.0-1011.12 —
Ubuntu 25.10 linux-riscv 6.17.0-23.23.1 —
Ubuntu 24.04 LTS linux 6.8.0-111.111 USN-8254-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1053.56 USN-8254-1
Ubuntu 24.04 LTS linux-aws-6.17 +2 6.17.0-1013.13~24.04.1 USN-8245-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1054.60 USN-8258-1
Ubuntu 24.04 LTS linux-azure-fde 6.8.0-1058.65 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1039.42 —
Ubuntu 24.04 LTS linux-gcp 6.8.0-1055.58 USN-8254-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1051.57 USN-8254-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1038.41 USN-8254-1
Ubuntu 24.04 LTS linux-hwe-6.17 6.17.0-23.23~24.04.1 —
Ubuntu 24.04 LTS linux-ibm 6.8.0-1052.52 USN-8254-1
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-111.111.1 USN-8254-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1052.55 —
Ubuntu 24.04 LTS linux-nvidia-6.17 6.17.0-1026.26 USN-8508-1
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1052.55.1 —
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1023.23 —
Ubuntu 24.04 LTS linux-oem-6.17 6.17.0-1020.20 USN-8245-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1050.51 USN-8254-1
Ubuntu 24.04 LTS linux-oracle-6.17 6.17.0-1014.14~24.04.1 —
Ubuntu 24.04 LTS linux-raspi 6.8.0-1053.57 USN-8254-1
Ubuntu 24.04 LTS linux-riscv +18 No fix yet —
Ubuntu 24.04 LTS linux-riscv-6.17 6.17.0-23.23.1~24.04.1 —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1029.30 USN-8261-1
Ubuntu 22.04 LTS linux +1 5.15.0-177.187 USN-8255-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1106.113 USN-8255-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1053.56~22.04.1 USN-8254-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1111.120 USN-8255-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1059.65~22.04.1 USN-8440-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1114.123 —
Ubuntu 22.04 LTS linux-azure-fde-6.8 6.8.0-1058.65~22.04.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1106.115 USN-8255-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1060.63~22.04.1 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1102.108 USN-8255-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1089.97 USN-8255-1
Ubuntu 22.04 LTS linux-hwe-6.8 +1 6.8.0-111.111~22.04.1 USN-8254-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1100.103 USN-8255-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1052.52~22.04.1 USN-8254-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1101.107 USN-8255-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1098.103 USN-8255-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-111.111.1~22.04.1 USN-8254-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1101.102 USN-8255-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1052.55~22.04.1 —
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1058.58 USN-8255-1
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1047.47 USN-8255-1
Ubuntu 22.04 LTS linux-oracle 5.15.0-1103.109 USN-8255-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1050.51~22.04.1 USN-8254-1
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1070.74 USN-8275-1
Show 14 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 6.8.0-2043.44 USN-8254-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1048.49 USN-8254-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.14 No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.17 6.17.0-1011.12~24.04.1 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1098.100 USN-8255-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1105.114 USN-8255-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1048.49~22.04.1 USN-8254-1
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 24.04 LTS linux-aws-fips 6.8.0-1053.56+fips1 USN-8254-1
Ubuntu Pro FIPS-updates 24.04 LTS linux-azure-fips 6.8.0-1054.60+fips1 —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-111.111+fips1 USN-8254-1
Ubuntu Pro FIPS-updates 24.04 LTS linux-gcp-fips 6.8.0-1055.58+fips1 USN-8254-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1106.113+fips1 USN-8255-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1111.120+fips1 USN-8255-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-177.187+fips1 USN-8255-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1106.115+fips1 USN-8255-1
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1158.168+fips1 USN-8273-1
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1162.168+fips1 USN-8273-1
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1132.142 USN-8273-1
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1161.170+fips1 USN-8273-1
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 24.04 LTS linux 6.8.0-117.117 LSN-120-1
Ubuntu Pro 24.04 LTS linux-aws 6.8.0-1055.58 LSN-120-1
Ubuntu Pro 24.04 LTS linux-azure 6.8.0-1056.62 LSN-120-1
Ubuntu Pro 24.04 LTS linux-gcp 6.8.0-1058.61 LSN-120-1
Ubuntu Pro 24.04 LTS linux-ibm 6.8.0-1055.56 LSN-120-1
Ubuntu Pro 24.04 LTS linux-oracle 6.8.0-1054.55 LSN-120-1
Ubuntu Pro 22.04 LTS linux 5.15.0-179.189 LSN-120-1
Ubuntu Pro 22.04 LTS linux-aws 5.15.0-1108.115 LSN-120-1
Ubuntu Pro 22.04 LTS linux-aws-6.8 6.8.0-1057.60~22.04.1 LSN-120-1
Ubuntu Pro 22.04 LTS linux-azure 5.15.0-1114.123 LSN-120-1
Ubuntu Pro 22.04 LTS linux-gcp 5.15.0-1108.117 LSN-120-1
Ubuntu Pro 22.04 LTS linux-gcp-6.8 6.8.0-1060.63~22.04.1 LSN-120-1
Ubuntu Pro 22.04 LTS linux-gke 5.15.0-1104.110 LSN-120-1
Ubuntu Pro 22.04 LTS linux-ibm 5.15.0-1102.105 LSN-120-1
Ubuntu Pro 22.04 LTS linux-ibm-6.8 6.8.0-1055.56~22.04.1 LSN-120-1
Ubuntu Pro 22.04 LTS linux-oracle 5.15.0-1105.111 LSN-120-1
Ubuntu Pro 20.04 LTS linux 5.4.0-229.249 USN-8273-1, LSN-120-1
Ubuntu Pro 20.04 LTS linux-aws 5.4.0-1158.168 USN-8273-1
Ubuntu Pro 20.04 LTS linux-aws-5.15 5.15.0-1106.113~20.04.1 USN-8255-1, LSN-120-1
Ubuntu Pro 20.04 LTS linux-azure 5.4.0-1162.168 USN-8273-1
Ubuntu Pro 20.04 LTS linux-azure-5.15 5.15.0-1111.120~20.04.1 LSN-120-1
Ubuntu Pro 20.04 LTS linux-bluefield 5.4.0-1117.124 USN-8273-1
Ubuntu Pro 20.04 LTS linux-gcp 5.4.0-1161.170 USN-8273-1
Ubuntu Pro 20.04 LTS linux-gcp-5.15 5.15.0-1106.115~20.04.1 USN-8297-1, LSN-120-1
Ubuntu Pro 20.04 LTS linux-hwe-5.15 +1 5.15.0-177.187~20.04.1 USN-8255-1, LSN-120-1
Ubuntu Pro 20.04 LTS linux-ibm 5.4.0-1104.109 USN-8273-1
Ubuntu Pro 20.04 LTS linux-ibm-5.15 5.15.0-1100.103~20.04.1 USN-8255-1, LSN-120-1
Ubuntu Pro 20.04 LTS linux-intel-iotg-5.15 5.15.0-1101.107~20.04.1 USN-8255-1
Ubuntu Pro 20.04 LTS linux-iot 5.4.0-1062.65 USN-8273-1
Ubuntu Pro 20.04 LTS linux-kvm 5.4.0-1145.154 USN-8273-1
Ubuntu Pro 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1058.58~20.04.1 —
Ubuntu Pro 20.04 LTS linux-oracle 5.4.0-1156.166 USN-8273-1
Ubuntu Pro 20.04 LTS linux-oracle-5.15 5.15.0-1104.110~20.04.1 USN-8439-1, LSN-120-1
Ubuntu Pro 20.04 LTS linux-raspi 5.4.0-1143.156 USN-8391-1
Ubuntu Pro 20.04 LTS linux-riscv-5.15 5.15.0-1100.104~20.04.1 —
Ubuntu Pro 20.04 LTS linux-xilinx-zynqmp 5.4.0-1076.80 USN-8273-1
Ubuntu Pro 18.04 LTS linux 4.15.0-250.262 LSN-120-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1192.205 LSN-120-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1158.168~18.04.1 USN-8273-1
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1201.216 LSN-120-1
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1162.168~18.04.1 USN-8273-1
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1185.202 LSN-120-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1161.170~18.04.1 USN-8273-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-229.249~18.04.1 USN-8273-1, LSN-120-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1104.109~18.04.1 USN-8273-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1154.165 LSN-120-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1156.166~18.04.2 USN-8273-1
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1143.156~18.04.1 USN-8391-1
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +7 6.4.0-150700.53.34.1 SUSE-SU-2026:5091-1, SUSE-SU-2026:1081-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.34.1.150700.17.23.1 SUSE-SU-2026:5091-1, SUSE-SU-2026:1081-1
SLES 12 SP5 kernel-syms +2 4.12.14-122.296.1 SUSE-SU-2026:1078-1
Show 8 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 kernel-64kb +8 6.12.0-160000.27.1 SUSE-SU-2026:20931-1
SLES for SAP 16.0 kernel-default-base 6.12.0-160000.27.1.160000.2.8 SUSE-SU-2026:20931-1
SLES 16.0 kernel-64kb +8 6.12.0-160000.27.1 SUSE-SU-2026:20931-1
SLES 16.0 kernel-default-base 6.12.0-160000.27.1.160000.2.8 SUSE-SU-2026:20931-1
SLE Micro 6.2 kernel-default-base 6.12.0-160000.27.1.160000.2.8 SUSE-SU-2026:20838-1
SLE Micro 6.2 kernel-rt +5 6.12.0-160000.27.1 SUSE-SU-2026:20873-1, SUSE-SU-2026:20838-1
SLE Micro 6.1 kernel-default-base 6.4.0-40.1.21.17 SUSE-SU-2026:24619-1, SUSE-SU-2026:20667-1
SLE Micro 6.1 kernel-rt +4 6.4.0-40.1 SUSE-SU-2026:24619-1, SUSE-SU-2026:20876-1, SUSE-SU-2026:20667-1
SLE Micro 6.0 kernel-default-base 6.4.0-40.1.21.17 SUSE-SU-2026:24550-1, SUSE-SU-2026:20720-1
SLE Micro 6.0 kernel-rt +4 6.4.0-40.1 SUSE-SU-2026:24550-1, SUSE-SU-2026:20845-1, SUSE-SU-2026:20720-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.34.1 SUSE-SU-2026:5091-1, SUSE-SU-2026:1081-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_10 1-150700.1.3.1 SUSE-SU-2026:0962-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_10 +1 1-150700.15.3.1 SUSE-SU-2026:5091-1, SUSE-SU-2026:1081-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.296.1 SUSE-SU-2026:1078-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_78 1-8.3.1 SUSE-SU-2026:1078-1
SUSE Real Time Module 15 SP7 kernel-rt +2 6.4.0-150700.7.34.1 SUSE-SU-2026:0962-1
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 kernel-default-base 6.12.0-160000.27.1.160000.2.8 openSUSE-SU-2026:20416-1
openSUSE Leap 16.0 kernel-rt +11 6.12.0-160000.27.1 openSUSE-SU-2026:20416-1

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.126.1-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 kernel-uek +34 6.12.0-200.74.27.el10uek ELSA-2026-50372, ELSA-2026-50232, ELSA-2026-50160

Advisories 37

References