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Vulnerability · Published Jun 18, 2025 · Assigned by Linux

CVE-2025-38006net: mctp: Don't access ifa_index when missing

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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 90.5% 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: net: mctp: Don't access ifa_index when missing In mctp_dump_addrinfo, ifa_index can be used to filter interfaces, but only when the struct ifaddrmsg is provided. Otherwise it will be comparing to uninitialised memory - reproducible in the syzkaller case from dhcpd, or busybox "ip addr show". The kernel MCTP implementation has always filtered by ifa_index, so existing userspace programs expecting to dump MCTP addresses must already be passing a valid ifa_index value (either 0 or a real index). BUG: KMSAN: uninit-value in mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128 mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128 rtnl_dump_all+0x3ec/0x5b0 net/core/rtnetlink.c:4380 rtnl_dumpit+0xd5/0x2f0 net/core/rtnetlink.c:6824 netlink_dump+0x97b/0x1690 net/netlink/af_netlink.c:2309

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2025-38006
Debian:13linux6.12.30-1DEBIAN-CVE-2025-38006
Debian:14linux6.12.30-1DEBIAN-CVE-2025-38006
Ubuntu:22.04:LTSlinux5.15.0-186.196UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux5.15.0-186.196USN-8575-1
Ubuntu:24.04:LTSlinux6.8.0-100.100UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-aws5.15.0-1112.119UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-aws5.15.0-1112.119USN-8575-2
Ubuntu:24.04:LTSlinux-aws6.8.0-1046.49UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1011.11~24.04.1UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1011.11~24.04.1USN-7699-1
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure5.15.0-1117.126USN-8575-3
Ubuntu:22.04:LTSlinux-azure5.15.0-1117.126UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-azure6.8.0-1046.52UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1117.126USN-8610-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1117.126UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1046.53UBUNTU-CVE-2025-38006
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1046.53~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gcp5.15.0-1112.122UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gcp5.15.0-1112.122USN-8575-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1047.50UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1014.15~24.04.1UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1014.15~24.04.1USN-7699-1
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1047.50~22.04.2UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gke5.15.0-1108.114USN-8575-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1108.114UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-gke6.8.0-1043.48UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1095.103USN-8575-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1095.103UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1030.33UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-hwe-6.146.14.0-28.28~24.04.1USN-7699-2
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-ibm5.15.0-1106.110UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-ibm5.15.0-1106.110USN-8575-2
Ubuntu:24.04:LTSlinux-ibm6.8.0-1044.44UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1044.44~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1107.113UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1107.113USN-8620-4
Ubuntu:22.04:LTSlinux-kvm5.15.0-1104.109USN-8575-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1104.109UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-184.194UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-184.194USN-8575-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-100.100.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-100.100.1~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1107.108UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1107.108USN-8575-2
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1046.49UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1046.49.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1064.66USN-8576-2
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1064.66UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1053.53UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1053.53USN-8576-2
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1010.10USN-7699-2
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1010.10UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-oracle5.15.0-1109.115USN-8575-3
Ubuntu:22.04:LTSlinux-oracle5.15.0-1109.115UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-oracle6.8.0-1043.44UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1011.11~24.04.1USN-7699-1
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1011.11~24.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1043.44~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-raspi5.15.0-1106.109UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-raspi5.15.0-1106.109USN-8668-2
Ubuntu:24.04:LTSlinux-raspi6.8.0-1047.51UBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-riscv-6.146.14.0-28.28.1~24.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-38006
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1023.24UBUNTU-CVE-2025-38006
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1075.79USN-8575-1
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1075.79UBUNTU-CVE-2025-38006

Affected products (as reported)

VendorProductVersions
Linux Linux 583be982d93479ea3d85091b0fd0b01201ede87d – before 8ef7b3f0db69e2f4a80be351f6aee9a4c2332ef9583be982d93479ea3d85091b0fd0b01201ede87d – before d22efcd246a7688599eefcf8e5c7985a3854ef5d583be982d93479ea3d85091b0fd0b01201ede87d – before acab78ae12c7fefb4f3bfe22e00770a5faa42724583be982d93479ea3d85091b0fd0b01201ede87d – before d4d1561d17eb72908e4489c0900d96e0484fac20583be982d93479ea3d85091b0fd0b01201ede87d – before 24fa213dffa470166ec014f979f36c6ff44afb45583be982d93479ea3d85091b0fd0b01201ede87d – before f11cf946c0a92c560a890d68e4775723353599e1
Linux Linux 5.15

References