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Vulnerability · Published Mar 18, 2026 · Assigned by Linux

CVE-2026-23256net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup

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

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.1%top 98.1% 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: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Compile tested only. Issue found using code review.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.164-1DEBIAN-CVE-2026-23256
Debian:13linux6.12.73-1DEBIAN-CVE-2026-23256
Debian:14linux6.18.10-1DEBIAN-CVE-2026-23256
Ubuntu:22.04:LTSlinux5.15.0-185.195USN-8493-1
Ubuntu:22.04:LTSlinux5.15.0-185.195UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux6.8.0-117.117UBUNTU-CVE-2026-23256
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-aws5.15.0-1111.118UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-aws5.15.0-1111.118USN-8493-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1055.58UBUNTU-CVE-2026-23256
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1057.60~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure5.15.0-1116.125UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure5.15.0-1116.125USN-8493-1
Ubuntu:24.04:LTSlinux-azure6.8.0-1056.62UBUNTU-CVE-2026-23256
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1059.65~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1116.125UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1058.65UBUNTU-CVE-2026-23256
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1058.65~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gcp5.15.0-1111.121UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gcp5.15.0-1111.121USN-8493-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1058.61UBUNTU-CVE-2026-23256
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1060.63~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gke5.15.0-1107.113UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gke5.15.0-1107.113USN-8493-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1054.60UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1094.102UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1094.102USN-8493-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1041.44UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-124.124~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-ibm5.15.0-1105.109USN-8493-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1105.109UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-ibm6.8.0-1055.56UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1055.56~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1106.112UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1106.112USN-8493-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1103.108USN-8493-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1103.108UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-183.193UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-183.193USN-8493-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-117.117.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-117.117.1~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1106.107USN-8493-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1106.107UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1054.57UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1054.57~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1054.57.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1063.63USN-8493-1
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1063.63UBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1024.24UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1052.52UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1052.52USN-8493-1
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oracle5.15.0-1108.114UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oracle5.15.0-1108.114USN-8493-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1054.55UBUNTU-CVE-2026-23256
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1054.55~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-raspi5.15.0-1105.108UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-raspi5.15.0-1105.108USN-8527-1
Ubuntu:24.04:LTSlinux-raspi6.8.0-1056.60UBUNTU-CVE-2026-23256
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-23256
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-23256
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-117.117~22.04.1UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-23256
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1032.33UBUNTU-CVE-2026-23256
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1074.78USN-8528-1
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1074.78UBUNTU-CVE-2026-23256

Affected products (as reported)

VendorProductVersions
Linux Linux 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before bd680e56e316be92c01568be98d85d7a6c9bd92c846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before 01fbca1e93ec3f39f76c31a8f9afa32ce00da48a846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before 71a56b89203ec7e5670d94a61a9b4ae617eca804846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before 3bf519e39b51cb08a93c0599870b35a23db1031e846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before 52b19b3a22306fe452ec9e8ff96063f4bfb77b99846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd846b46873eeb3baf40f7e6d8fe8f98aec95e7727 – before 6cbba46934aefdfb5d171e0a95aec06c24f7ca30
Linux Linux 4.10

References