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Vulnerability · Published Feb 14, 2026 · Assigned by Linux

CVE-2026-23154net: fix segmentation of forwarding fraglist GRO

Medium 5.5

In plain English

A medium-severity improper input validation in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 91.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: net: fix segmentation of forwarding fraglist GRO This patch enhances GSO segment handling by properly checking the SKB_GSO_DODGY flag for frag_list GSO packets, addressing low throughput issues observed when a station accesses IPv4 servers via hotspots with an IPv6-only upstream interface. Specifically, it fixes a bug in GSO segmentation when forwarding GRO packets containing a frag_list. The function skb_segment_list cannot correctly process GRO skbs that have been converted by XLAT, since XLAT only translates the header of the head skb. Consequently, skbs in the frag_list may remain untranslated, resulting in protocol inconsistencies and reduced throughput. To address this, the patch explicitly sets the SKB_GSO_DODGY flag for GSO packets in XLAT's IPv4/IPv6 protocol translation helpers (bpf_skb_proto_4_to_6 and bpf_skb_proto_6_to_4). This marks GSO packets as potentially modified after protocol translation. As a result, GSO segmentation will avoid using skb_segment_list and instead falls back to skb_segment for packets with the SKB_GSO_DODGY flag. This ensures that only safe and fully translated frag_list packets are processed by skb_segment_list, resolving protocol inconsistencies and improving throughput when forwarding GRO packets converted by XLAT.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.170-1DEBIAN-CVE-2026-23154
Debian:13linux6.12.69-1DEBIAN-CVE-2026-23154
Debian:14linux6.18.9-1DEBIAN-CVE-2026-23154
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux6.8.0-136.136USN-8567-1
Ubuntu:24.04:LTSlinux6.8.0-136.136UBUNTU-CVE-2026-23154
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-aws6.8.0-1061.64UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-aws6.8.0-1061.64USN-8595-2
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1061.64~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1061.64~22.04.1USN-8595-3
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure6.8.0-1063.71UBUNTU-CVE-2026-23154
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-6.176.17.0-1021.21~24.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1063.71~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1062.69UBUNTU-CVE-2026-23154
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1062.69~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gcp6.8.0-1064.72USN-8567-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1064.72UBUNTU-CVE-2026-23154
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gcp-6.176.17.0-1021.24~24.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1064.72~22.04.1USN-8567-1
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1064.72~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gke6.8.0-1059.67USN-8567-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1059.67UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1046.50UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1046.50USN-8567-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-hwe-6.176.17.0-41.41~24.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-136.136~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-ibm6.8.0-1061.62UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-ibm6.8.0-1061.62USN-8574-3
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1061.62~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1061.62~22.04.1USN-8574-3
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-136.136.2USN-8574-2
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-136.136.2UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-136.136.2~22.04.1USN-8574-2
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-136.136.2~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1059.62UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1059.62USN-8596-1
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-nvidia-6.176.17.0-1031.31UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1059.62~22.04.1USN-8596-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1059.62~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1059.62.1USN-8596-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1059.62.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1030.31UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1030.31USN-8574-3
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oem-6.176.17.0-1030.30UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oracle6.8.0-1058.61USN-8574-2
Ubuntu:24.04:LTSlinux-oracle6.8.0-1058.61UBUNTU-CVE-2026-23154
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-oracle-6.176.17.0-1019.19~24.04.3UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1058.61~22.04.1USN-8595-1
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1058.61~22.04.1UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-raspi6.8.0-1061.65USN-8665-1
Ubuntu:24.04:LTSlinux-raspi6.8.0-1061.65UBUNTU-CVE-2026-23154
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-23154
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-136.136~22.04.3UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-vmware6.8.0-1008.8UBUNTU-CVE-2026-23154
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1033.34USN-8574-3
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1033.34UBUNTU-CVE-2026-23154
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-23154

Affected products (as reported)

VendorProductVersions
Linux Linux 9fd1ff5d2ac7181844735806b0a703c942365291 – before 9122d7280b2303e835cdfec156bd932ac1f586ed9fd1ff5d2ac7181844735806b0a703c942365291 – before 2cbef9ea5a0ac51863ede35c45f26931a85d38889fd1ff5d2ac7181844735806b0a703c942365291 – before 3e62db1e3140449608975e29e0979cc5f3b1cc079fd1ff5d2ac7181844735806b0a703c942365291 – before 3d48d59235c494d34e32052f768393111c0806ef9fd1ff5d2ac7181844735806b0a703c942365291 – before 426ca15c7f6cb6562a081341ca88893a50c59fa2
Linux Linux 5.6

Weakness: CWE-20

References