{"id":"CVE-2024-42106","revision":"c4292ad60bb94cf88ba522c7c8ea4720","records":[{"revision":"c4292ad60bb94cf88ba522c7c8ea4720","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-42106","aliases":[],"title":"inet_diag: Initialize pad field in struct inet_diag_req_v2","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ninet_diag: Initialize pad field in struct inet_diag_req_v2\n\nKMSAN reported uninit-value access in raw_lookup() [1]. Diag for raw\nsockets uses the pad field in struct inet_diag_req_v2 for the\nunderlying protocol. This field corresponds to the sdiag_raw_protocol\nfield in struct inet_diag_req_raw.\n\ninet_diag_get_exact_compat() converts inet_diag_req to\ninet_diag_req_v2, but leaves the pad field uninitialized. So the issue\noccurs when raw_lookup() accesses the sdiag_raw_protocol field.\n\nFix this by initializing the pad field in\ninet_diag_get_exact_compat(). Also, do the same fix in\ninet_diag_dump_compat() to avoid the similar issue in the future.\n\n[1]\nBUG: KMSAN: uninit-value in raw_lookup net/ipv4/raw_diag.c:49 [inline]\nBUG: KMSAN: uninit-value in raw_sock_get+0x657/0x800 net/ipv4/raw_diag.c:71\n raw_lookup net/ipv4/raw_diag.c:49 [inline]\n raw_sock_get+0x657/0x800 net/ipv4/raw_diag.c:71\n raw_diag_dump_one+0xa1/0x660 net/ipv4/raw_diag.c:99\n inet_diag_cmd_exact+0x7d9/0x980\n inet_diag_get_exact_compat net/ipv4/inet_diag.c:1404 [inline]\n inet_diag_rcv_msg_compat+0x469/0x530 net/ipv4/inet_diag.c:1426\n sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282\n netlink_rcv_skb+0x537/0x670 net/netlink/af_netlink.c:2564\n sock_diag_rcv+0x35/0x40 net/core/sock_diag.c:297\n netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n netlink_unicast+0xe74/0x1240 net/netlink/af_netlink.c:1361\n netlink_sendmsg+0x10c6/0x1260 net/netlink/af_netlink.c:1905\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0x332/0x3d0 net/socket.c:745\n ____sys_sendmsg+0x7f0/0xb70 net/socket.c:2585\n ___sys_sendmsg+0x271/0x3b0 net/socket.c:2639\n __sys_sendmsg net/socket.c:2668 [inline]\n __do_sys_sendmsg net/socket.c:2677 [inline]\n __se_sys_sendmsg net/socket.c:2675 [inline]\n __x64_sys_sendmsg+0x27e/0x4a0 net/socket.c:2675\n x64_sys_call+0x135e/0x3ce0 arch/x86/include/generated/asm/syscalls_64.h:47\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xd9/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nUninit was stored to memory at:\n raw_sock_get+0x650/0x800 net/ipv4/raw_diag.c:71\n raw_diag_dump_one+0xa1/0x660 net/ipv4/raw_diag.c:99\n inet_diag_cmd_exact+0x7d9/0x980\n inet_diag_get_exact_compat net/ipv4/inet_diag.c:1404 [inline]\n inet_diag_rcv_msg_compat+0x469/0x530 net/ipv4/inet_diag.c:1426\n sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282\n netlink_rcv_skb+0x537/0x670 net/netlink/af_netlink.c:2564\n sock_diag_rcv+0x35/0x40 net/core/sock_diag.c:297\n netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]\n netlink_unicast+0xe74/0x1240 net/netlink/af_netlink.c:1361\n netlink_sendmsg+0x10c6/0x1260 net/netlink/af_netlink.c:1905\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0x332/0x3d0 net/socket.c:745\n ____sys_sendmsg+0x7f0/0xb70 net/socket.c:2585\n ___sys_sendmsg+0x271/0x3b0 net/socket.c:2639\n __sys_sendmsg net/socket.c:2668 [inline]\n __do_sys_sendmsg net/socket.c:2677 [inline]\n __se_sys_sendmsg net/socket.c:2675 [inline]\n __x64_sys_sendmsg+0x27e/0x4a0 net/socket.c:2675\n x64_sys_call+0x135e/0x3ce0 arch/x86/include/generated/asm/syscalls_64.h:47\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xd9/0x1e0 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nLocal variable req.i created at:\n inet_diag_get_exact_compat net/ipv4/inet_diag.c:1396 [inline]\n inet_diag_rcv_msg_compat+0x2a6/0x530 net/ipv4/inet_diag.c:1426\n sock_diag_rcv_msg+0x23d/0x740 net/core/sock_diag.c:282\n\nCPU: 1 PID: 8888 Comm: syz-executor.6 Not tainted 6.10.0-rc4-00217-g35bb670d65fc #32\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-2.fc40 04/01/2014","state":0,"publishedAt":"2024-07-30T07:46:01.865+00:00","modifiedAt":"2026-10-15T00:47:55.627+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ipv4/inet_diag.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"7094a5fd20ab66028f1da7f06e0f2692d70346f9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"0184bf0a349f4cf9e663abbe862ff280e8e4dfa2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"7ef519c8efde152e0d632337f2994f6921e0b7e4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"8366720519ea8d322a20780debdfd23d9fc0904a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"d6f487e0704de2f2d15f8dd5d7d723210f2b2fdb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"76965648fe6858db7c5f3c700fef7aa5f124ca1c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"f9b2010e8af49fac9d9562146fb81744d8a9b051\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"432490f9d455fb842d70219f22d9d2c812371676\",\n                            \"lessThan\": \"61cf1c739f08190a4cbf047b9fbb192a94d87e3f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/ipv4/inet_diag.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.10\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.318\",\n                            \"lessThanOrEqual\": \"4.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.280\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.222\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.163\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.98\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.39\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.9.9\",\n                            \"lessThanOrEqual\": \"6.9.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.10\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/7094a5fd20ab66028f1da7f06e0f2692d70346f9","https://git.kernel.org/stable/c/0184bf0a349f4cf9e663abbe862ff280e8e4dfa2","https://git.kernel.org/stable/c/7ef519c8efde152e0d632337f2994f6921e0b7e4","https://git.kernel.org/stable/c/8366720519ea8d322a20780debdfd23d9fc0904a","https://git.kernel.org/stable/c/d6f487e0704de2f2d15f8dd5d7d723210f2b2fdb","https://git.kernel.org/stable/c/76965648fe6858db7c5f3c700fef7aa5f124ca1c","https://git.kernel.org/stable/c/f9b2010e8af49fac9d9562146fb81744d8a9b051","https://git.kernel.org/stable/c/61cf1c739f08190a4cbf047b9fbb192a94d87e3f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-42106","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-42106","identifiers":["CVE-2024-42106"]},"retained":false,"historicalAffected":[]}],"coverage":[]}