{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-52845","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-05-21T15:19:24.254Z","datePublished":"2024-05-21T15:31:43.181Z","dateUpdated":"2025-05-04T07:44:11.838Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:44:11.838Z"},"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":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"6744008c354bca2e4686a5b6056ee6b535d9f67d","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"2426425d686b43adbc4f2f4a367b494f06f159d6","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"2199260c42e6fbc5af8adae3bf78e623407c91b0","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"b33d130f07f1decd756b849ab03c23d11d4dd294","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"3907b89cd17fcc23e9a80789c36856f00ece0ba8","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"abc1582119e8c4af14cedb0db6541fd603f45a04","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"560992f41c0cea44b7603bc9e6c73bffbf6b5709","status":"affected","versionType":"git"},{"version":"0655f6a8635b1b66f2434d5556b1044c14b1ccaf","lessThan":"19b3f72a41a8751e26bffc093bb7e1cef29ad579","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":"semver"},{"version":"4.14.330","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.299","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.261","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.201","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.139","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.63","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.5.12","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6.2","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"4.14.330"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"4.19.299"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"5.4.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"5.10.201"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"5.15.139"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.1.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.5.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.6.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.19","versionEndExcluding":"6.7"}]}]}],"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: 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