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Vulnerability · Published May 6, 2026 · Assigned by Linux

CVE-2026-43101ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()

High 7.5

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 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 51.9% 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: ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data() We need to check __in6_dev_get() for possible NULL value, as suggested by Yiming Qian. Also add skb_dst_dev_rcu() instead of skb_dst_dev(), and two missing READ_ONCE(). Note that @dev can't be NULL.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-43101
Debian:13linux6.12.115-2DEBIAN-CVE-2026-43101
Debian:14linux6.19.14-1DEBIAN-CVE-2026-43101
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linuxno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-awsno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-azureno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-gcpno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-43101
Ubuntu:26.04:LTSlinux-nvidia7.0.0-1006.6UBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-oracleno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-raspino fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-realtimeno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-43101
Ubuntu:25.10linux-riscvno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-43101
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-43101
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-43101

Affected products (as reported)

VendorProductVersions
Linux Linux 9ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – before dd0d2827b3643ff307c766865f8e31eab5cbd1f59ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – before 34b8390ac0ba57004b90ea568ac06f50bf896a809ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – before f87aa5d1a7f56727a768757613a303b4245444a19ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – before 4198aab6f000b4febb18ea820fea20634dd789c79ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – before 3719c234fa94c37c955b1ecd3742ef280ec135e69ee11f0fff205b4b3df9750bff5e94f97c71b6a0 – before 4e65a8b8daa18d63255ec58964dd192c7fdd9f8b
Linux Linux 5.15

References