{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-42106", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "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" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "432490f9d455", "version_value": "7094a5fd20ab" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.318", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.280", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.222", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.163", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.98", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.39", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9.9", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/7094a5fd20ab66028f1da7f06e0f2692d70346f9", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/7094a5fd20ab66028f1da7f06e0f2692d70346f9" }, { "url": "https://git.kernel.org/stable/c/0184bf0a349f4cf9e663abbe862ff280e8e4dfa2", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/0184bf0a349f4cf9e663abbe862ff280e8e4dfa2" }, { "url": "https://git.kernel.org/stable/c/7ef519c8efde152e0d632337f2994f6921e0b7e4", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/7ef519c8efde152e0d632337f2994f6921e0b7e4" }, { "url": "https://git.kernel.org/stable/c/8366720519ea8d322a20780debdfd23d9fc0904a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8366720519ea8d322a20780debdfd23d9fc0904a" }, { "url": "https://git.kernel.org/stable/c/d6f487e0704de2f2d15f8dd5d7d723210f2b2fdb", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/d6f487e0704de2f2d15f8dd5d7d723210f2b2fdb" }, { "url": "https://git.kernel.org/stable/c/76965648fe6858db7c5f3c700fef7aa5f124ca1c", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/76965648fe6858db7c5f3c700fef7aa5f124ca1c" }, { "url": "https://git.kernel.org/stable/c/f9b2010e8af49fac9d9562146fb81744d8a9b051", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/f9b2010e8af49fac9d9562146fb81744d8a9b051" }, { "url": "https://git.kernel.org/stable/c/61cf1c739f08190a4cbf047b9fbb192a94d87e3f", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/61cf1c739f08190a4cbf047b9fbb192a94d87e3f" } ] }, "generator": { "engine": "bippy-c9c4e1df01b2" } }