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Vulnerability · Published Oct 23, 2026 · Assigned by Linux

CVE-2026-99045ibmveth: h_free logical LAN on open-fail after register

Unrated

In plain English

A 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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 91.8% 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: ibmveth: h_free logical LAN on open-fail after register ibmveth_open() registers the logical LAN, then allocates the RX buffer pools. A pool failure jumps to out_free_buffer_pools without h_free_logical_lan(), so PHYP still owns the buffer-list page when it is unmapped. request_irq() failure already issued the hypercall before taking the same label. Move that h_free to the shared post-register unwind so both paths deregister before the buffer list is unmapped.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-99045
Debian:13linux6.12.113-1DEBIAN-CVE-2026-99045
Debian:14linux7.2.11-1DEBIAN-CVE-2026-99045
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinuxno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux7.3.0-10.10UBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-aws7.3.0-1004.4UBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-azureno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-gcp7.3.0-1004.4UBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-hwe-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-oem-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-oracle7.3.0-1004.4UBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-raspi7.3.0-1004.4UBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-realtime7.3.0-10.10.1UBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-99045
Ubuntu:26.10linux-riscv7.3.0-10.10.1UBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-riscv-7.0no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-99045
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-99045
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-99045

Affected products (as reported)

VendorProductVersions
Linux Linux d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before 073df7871a7023298ce27cfa518fbc30cc155651d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before 7bd67d324d952101b3431c796d79f5e329bba159d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before eae138e880686ce19879aa0d158fa3c73516f632d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before decb4d4ead2c71ef698727734ab5024a872eb372d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before c54bbdf6f0731102a4bf7f5e4ee535b3ea415996d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before a065bd31ec462f6f9c267026b708dd020f122723d43732ce021f4244a4c53a45d57ad0c13c30ed94 – before d24fdec1413c656d29298097926e77542785ca0cd43732ce021f4244a4c53a45d57ad0c13c30ed94 – before af0524bf4ce1a4cbd2946aa81751582951cfcab5
Linux Linux 4.13

References