Log in Start free

Vulnerability · Published Aug 22, 2026 · Assigned by Linux

CVE-2026-74724ipvs: avoid out-of-bounds write in ip_vs_nat_icmp

High 7.8

In plain English

A high-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 0.1% (higher than 2% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.1%top 97.9% 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: ipvs: avoid out-of-bounds write in ip_vs_nat_icmp Sashiko warns that local attacker can modify the packet while it is processed by IPVS. Some places read the IP ihl field multiple times which can cause out-of-bounds access. One such place is ip_vs_nat_icmp where we can write after the validated area. Fix it by providing ciph argument just like it is done for IPv6 and use ciph->len as offset to the embedded transport header. Modify some IPv4 header checks by reading the ihl field only once.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.187-1DEBIAN-CVE-2026-74724
Debian:13linux6.12.105-1DEBIAN-CVE-2026-74724
Debian:14linux7.1.9-1DEBIAN-CVE-2026-74724
Debian:12linux-6.126.12.107-1~deb12u1DEBIAN-CVE-2026-74724
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1036.39UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-74724
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-74724
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-74724
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-74724

Affected products (as reported)

VendorProductVersions
Linux Linux 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 3b8f79af0e98f27b932b0b416e9c52b692d31ff91da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 3c779b258c9c3c3567af68d4f45c2f751f35bd0e1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before be65fa324640c7a95e30b146159a2be5cc73f22e1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before a69a4b3fff5814d079beff9a1e9d369994b2ed471da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 243d0187ec4c3837b9b0004f18d1068e461157601da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 646922a0379496154e8c8faca4f8e2fd9100cacc
Linux Linux 2.6.12

References