CVE-2025-38006

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

The following products are affected by CVE-2025-38006 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-38006.

URL	Resource
https://git.kernel.org/stable/c/24fa213dffa470166ec014f979f36c6ff44afb45
https://git.kernel.org/stable/c/acab78ae12c7fefb4f3bfe22e00770a5faa42724
https://git.kernel.org/stable/c/d4d1561d17eb72908e4489c0900d96e0484fac20
https://git.kernel.org/stable/c/f11cf946c0a92c560a890d68e4775723353599e1
https://lore.kernel.org/linux-cve-announce/2025061841-CVE-2025-38006-5478@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-38006
https://www.cve.org/CVERecord?id=CVE-2025-38006