{ "containers": { "cna": { "providerMetadata": { "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: Change nla_policy for bearer-related names to NLA_NUL_STRING\n\nsyzbot reported the following uninit-value access issue [1]:\n\n=====================================================\nBUG: KMSAN: uninit-value in strlen lib/string.c:418 [inline]\nBUG: KMSAN: uninit-value in strstr+0xb8/0x2f0 lib/string.c:756\n strlen lib/string.c:418 [inline]\n strstr+0xb8/0x2f0 lib/string.c:756\n tipc_nl_node_reset_link_stats+0x3ea/0xb50 net/tipc/node.c:2595\n genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline]\n genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]\n genl_rcv_msg+0x11ec/0x1290 net/netlink/genetlink.c:1066\n netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545\n genl_rcv+0x40/0x60 net/netlink/genetlink.c:1075\n netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline]\n netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368\n netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910\n sock_sendmsg_nosec net/socket.c:730 [inline]\n sock_sendmsg net/socket.c:753 [inline]\n ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541\n ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595\n __sys_sendmsg net/socket.c:2624 [inline]\n __do_sys_sendmsg net/socket.c:2633 [inline]\n __se_sys_sendmsg net/socket.c:2631 [inline]\n __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nUninit was created at:\n slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767\n slab_alloc_node mm/slub.c:3478 [inline]\n kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523\n kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559\n __alloc_skb+0x318/0x740 net/core/skbuff.c:650\n alloc_skb include/linux/skbuff.h:1286 [inline]\n netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline]\n netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885\n sock_sendmsg_nosec net/socket.c:730 [inline]\n sock_sendmsg net/socket.c:753 [inline]\n ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541\n ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595\n __sys_sendmsg net/socket.c:2624 [inline]\n __do_sys_sendmsg net/socket.c:2633 [inline]\n __se_sys_sendmsg net/socket.c:2631 [inline]\n __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nTIPC bearer-related names including link names must be null-terminated\nstrings. If a link name which is not null-terminated is passed through\nnetlink, strstr() and similar functions can cause buffer overrun. This\ncauses the above issue.\n\nThis patch changes the nla_policy for bearer-related names from NLA_STRING\nto NLA_NUL_STRING. This resolves the issue by ensuring that only\nnull-terminated strings are accepted as bearer-related names.\n\nsyzbot reported similar uninit-value issue related to bearer names [2]. The\nroot cause of this issue is that a non-null-terminated bearer name was\npassed. This patch also resolved this issue." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/tipc/netlink.c" ], "versions": [ { "version": "7be57fc69184", "lessThan": "6744008c354b", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "2426425d686b", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "2199260c42e6", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "b33d130f07f1", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "3907b89cd17f", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "4c731e98fe4d", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "abc1582119e8", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "560992f41c0c", "status": "affected", "versionType": "git" }, { "version": "7be57fc69184", "lessThan": "19b3f72a41a8", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/tipc/netlink.c" ], "versions": [ { "version": "3.19", "status": "affected" }, { "version": "0", "lessThan": "3.19", "status": "unaffected", "versionType": "custom" }, { "version": "4.14.330", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.299", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.261", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.201", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.139", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.63", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.5.12", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.2", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/6744008c354bca2e4686a5b6056ee6b535d9f67d" }, { "url": "https://git.kernel.org/stable/c/2426425d686b43adbc4f2f4a367b494f06f159d6" }, { "url": "https://git.kernel.org/stable/c/2199260c42e6fbc5af8adae3bf78e623407c91b0" }, { "url": "https://git.kernel.org/stable/c/b33d130f07f1decd756b849ab03c23d11d4dd294" }, { "url": "https://git.kernel.org/stable/c/3907b89cd17fcc23e9a80789c36856f00ece0ba8" }, { "url": "https://git.kernel.org/stable/c/4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4" }, { "url": "https://git.kernel.org/stable/c/abc1582119e8c4af14cedb0db6541fd603f45a04" }, { "url": "https://git.kernel.org/stable/c/560992f41c0cea44b7603bc9e6c73bffbf6b5709" }, { "url": "https://git.kernel.org/stable/c/19b3f72a41a8751e26bffc093bb7e1cef29ad579" } ], "title": "tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING", "x_generator": { "engine": "bippy-a5840b7849dd" } } }, "cveMetadata": { "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", "cveID": "CVE-2023-52845", "requesterUserId": "gregkh@kernel.org", "serial": "1", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.0" }