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Vulnerability · Published May 27, 2026 · Assigned by Linux

CVE-2026-45850ipvs: skip ipv6 extension headers for csum checks

Medium 5.5

In plain English

A medium-severity security flaw 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 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 94.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.176-1DEBIAN-CVE-2026-45850
Debian:13linux6.12.94-1DEBIAN-CVE-2026-45850
Debian:14linux6.19.6-1DEBIAN-CVE-2026-45850
Ubuntu:22.04:LTSlinux5.15.0-198.208UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux5.15.0-198.208USN-8875-1
Ubuntu:24.04:LTSlinux6.8.0-146.146UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux6.8.0-146.146USN-8903-1
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws5.15.0-1117.124UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws5.15.0-1117.124USN-8875-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1066.69USN-8903-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1066.69UBUNTU-CVE-2026-45850
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1066.69~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1066.69~22.04.1USN-8903-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1123.132UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure5.15.0-1123.132USN-8875-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1070.78UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure6.8.0-1070.78USN-8904-1
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1070.78~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1070.78~22.04.1USN-8904-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1122.131USN-8876-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1122.131UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1068.75USN-8904-1
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1068.75UBUNTU-CVE-2026-45850
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1068.75~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1068.75~22.04.1USN-8904-1
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gcp5.15.0-1118.128UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gcp5.15.0-1118.128USN-8877-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1070.78USN-8905-2
Ubuntu:24.04:LTSlinux-gcp6.8.0-1070.78UBUNTU-CVE-2026-45850
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1070.78~22.04.1USN-8905-1
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1070.78~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gke5.15.0-1113.119UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gke5.15.0-1113.119USN-8875-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1065.73USN-8903-2
Ubuntu:24.04:LTSlinux-gke6.8.0-1065.73UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1100.108UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1100.108USN-8875-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1051.55USN-8903-2
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1051.55UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-ibm5.15.0-1111.115USN-8875-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1111.115UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-ibm6.8.0-1066.67UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-ibm6.8.0-1066.67USN-8903-2
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1066.67~22.04.1USN-8906-1
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1066.67~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1112.118USN-8875-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1112.118UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-kvm5.15.0-1109.114UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-kvm5.15.0-1109.114USN-8875-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-195.205UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-195.205USN-8875-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-146.146.1UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-146.146.1USN-8903-2
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-146.146.1~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-146.146.1~22.04.1USN-8903-2
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1112.113USN-8875-2
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1112.113UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1064.67UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1064.67USN-8903-2
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1064.67~22.04.1USN-8903-2
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1064.67~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1064.67.1UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1064.67.1USN-8903-2
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1070.72UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1059.59UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oracle5.15.0-1114.120USN-8875-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1114.120UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oracle6.8.0-1063.66USN-8903-2
Ubuntu:24.04:LTSlinux-oracle6.8.0-1063.66UBUNTU-CVE-2026-45850
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-45850
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-45850
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-45850
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-146.146~22.04.1UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-vmware6.8.0-1008.8UBUNTU-CVE-2026-45850
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1080.84UBUNTU-CVE-2026-45850
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1080.84USN-8875-1

Affected products (as reported)

VendorProductVersions
Linux Linux 0bbdd42b7efa66685b6d74701bcde3a596a3a59d – before 0bf92a90bf05ecafe52e92d5bc15a585021a64ac0bbdd42b7efa66685b6d74701bcde3a596a3a59d – before 54add3b7d3c154ca89ef5bac2582b0ed1a3a15d50bbdd42b7efa66685b6d74701bcde3a596a3a59d – before 768f665f3685b455ed686370ed7ccb852a125a3b0bbdd42b7efa66685b6d74701bcde3a596a3a59d – before 9aa7edc1347b98774e5167ca34e5b8aa6083bde70bbdd42b7efa66685b6d74701bcde3a596a3a59d – before d643c1ec80b70508f54dac12179e36920e2c00de0bbdd42b7efa66685b6d74701bcde3a596a3a59d – before cdce1e797addab72393c0dfee31aaca41ef7d9370bbdd42b7efa66685b6d74701bcde3a596a3a59d – before a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e40bbdd42b7efa66685b6d74701bcde3a596a3a59d – before 05cfe9863ef049d98141dc2969eefde72fb07625
Linux Linux 2.6.28

References