{"id":"CVE-2025-38006","summary":"net: mctp: Don't access ifa_index when missing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mctp: Don't access ifa_index when missing\n\nIn mctp_dump_addrinfo, ifa_index can be used to filter interfaces, but\nonly when the struct ifaddrmsg is provided. Otherwise it will be\ncomparing to uninitialised memory - reproducible in the syzkaller case from\ndhcpd, or busybox \"ip addr show\".\n\nThe kernel MCTP implementation has always filtered by ifa_index, so\nexisting userspace programs expecting to dump MCTP addresses must\nalready be passing a valid ifa_index value (either 0 or a real index).\n\nBUG: KMSAN: uninit-value in mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128\n mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128\n rtnl_dump_all+0x3ec/0x5b0 net/core/rtnetlink.c:4380\n rtnl_dumpit+0xd5/0x2f0 net/core/rtnetlink.c:6824\n netlink_dump+0x97b/0x1690 net/netlink/af_netlink.c:2309","modified":"2026-04-24T06:42:50.482379137Z","published":"2025-06-18T09:28:17.773Z","related":["SUSE-SU-2025:03272-1","SUSE-SU-2025:03290-1","SUSE-SU-2025:03301-1","SUSE-SU-2025:03382-1","SUSE-SU-2025:03602-1","SUSE-SU-2025:03633-1","SUSE-SU-2025:03634-1","SUSE-SU-2025:20653-1","SUSE-SU-2025:20669-1","SUSE-SU-2025:20739-1","SUSE-SU-2025:20756-1","SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38006.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24fa213dffa470166ec014f979f36c6ff44afb45"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8ef7b3f0db69e2f4a80be351f6aee9a4c2332ef9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/acab78ae12c7fefb4f3bfe22e00770a5faa42724"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d4d1561d17eb72908e4489c0900d96e0484fac20"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f11cf946c0a92c560a890d68e4775723353599e1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38006.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38006"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"583be982d93479ea3d85091b0fd0b01201ede87d"},{"fixed":"8ef7b3f0db69e2f4a80be351f6aee9a4c2332ef9"},{"fixed":"acab78ae12c7fefb4f3bfe22e00770a5faa42724"},{"fixed":"d4d1561d17eb72908e4489c0900d96e0484fac20"},{"fixed":"24fa213dffa470166ec014f979f36c6ff44afb45"},{"fixed":"f11cf946c0a92c560a890d68e4775723353599e1"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-38006.json"}}],"schema_version":"1.7.5"}