CVE-2023-52845 (GCVE-0-2023-52845)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:31 – Updated: 2025-05-04 07:44
VLAI?
Title
tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING
Summary
In the Linux kernel, the following vulnerability has been resolved: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING syzbot reported the following uninit-value access issue [1]: ===================================================== BUG: KMSAN: uninit-value in strlen lib/string.c:418 [inline] BUG: KMSAN: uninit-value in strstr+0xb8/0x2f0 lib/string.c:756 strlen lib/string.c:418 [inline] strstr+0xb8/0x2f0 lib/string.c:756 tipc_nl_node_reset_link_stats+0x3ea/0xb50 net/tipc/node.c:2595 genl_family_rcv_msg_doit net/netlink/genetlink.c:971 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x11ec/0x1290 net/netlink/genetlink.c:1066 netlink_rcv_skb+0x371/0x650 net/netlink/af_netlink.c:2545 genl_rcv+0x40/0x60 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf47/0x1250 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1238/0x13d0 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook+0x12f/0xb70 mm/slab.h:767 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x577/0xa80 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:559 __alloc_skb+0x318/0x740 net/core/skbuff.c:650 alloc_skb include/linux/skbuff.h:1286 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1214 [inline] netlink_sendmsg+0xb34/0x13d0 net/netlink/af_netlink.c:1885 sock_sendmsg_nosec net/socket.c:730 [inline] sock_sendmsg net/socket.c:753 [inline] ____sys_sendmsg+0x9c2/0xd60 net/socket.c:2541 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2595 __sys_sendmsg net/socket.c:2624 [inline] __do_sys_sendmsg net/socket.c:2633 [inline] __se_sys_sendmsg net/socket.c:2631 [inline] __x64_sys_sendmsg+0x307/0x490 net/socket.c:2631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd TIPC bearer-related names including link names must be null-terminated strings. If a link name which is not null-terminated is passed through netlink, strstr() and similar functions can cause buffer overrun. This causes the above issue. This patch changes the nla_policy for bearer-related names from NLA_STRING to NLA_NUL_STRING. This resolves the issue by ensuring that only null-terminated strings are accepted as bearer-related names. syzbot reported similar uninit-value issue related to bearer names [2]. The root cause of this issue is that a non-null-terminated bearer name was passed. This patch also resolved this issue.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 6744008c354bca2e4686a5b6056ee6b535d9f67d (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 2426425d686b43adbc4f2f4a367b494f06f159d6 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 2199260c42e6fbc5af8adae3bf78e623407c91b0 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < b33d130f07f1decd756b849ab03c23d11d4dd294 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 3907b89cd17fcc23e9a80789c36856f00ece0ba8 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < abc1582119e8c4af14cedb0db6541fd603f45a04 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 560992f41c0cea44b7603bc9e6c73bffbf6b5709 (git)
Affected: 0655f6a8635b1b66f2434d5556b1044c14b1ccaf , < 19b3f72a41a8751e26bffc093bb7e1cef29ad579 (git)
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    Linux Linux Affected: 3.19
Unaffected: 0 , < 3.19 (semver)
Unaffected: 4.14.330 , ≤ 4.14.* (semver)
Unaffected: 4.19.299 , ≤ 4.19.* (semver)
Unaffected: 5.4.261 , ≤ 5.4.* (semver)
Unaffected: 5.10.201 , ≤ 5.10.* (semver)
Unaffected: 5.15.139 , ≤ 5.15.* (semver)
Unaffected: 6.1.63 , ≤ 6.1.* (semver)
Unaffected: 6.5.12 , ≤ 6.5.* (semver)
Unaffected: 6.6.2 , ≤ 6.6.* (semver)
Unaffected: 6.7 , ≤ * (original_commit_for_fix)
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          "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."
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6744008c354bca2e4686a5b6056ee6b535d9f67d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2426425d686b43adbc4f2f4a367b494f06f159d6\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/2199260c42e6fbc5af8adae3bf78e623407c91b0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b33d130f07f1decd756b849ab03c23d11d4dd294\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/3907b89cd17fcc23e9a80789c36856f00ece0ba8\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/abc1582119e8c4af14cedb0db6541fd603f45a04\", \"tags\": [\"x_transferred\"]}, {\"url\": 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{\"status\": \"affected\", \"version\": \"0655f6a8635b1b66f2434d5556b1044c14b1ccaf\", \"lessThan\": \"4c731e98fe4d678e87ba3e4d45d3cf0a5a193dc4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0655f6a8635b1b66f2434d5556b1044c14b1ccaf\", \"lessThan\": \"abc1582119e8c4af14cedb0db6541fd603f45a04\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0655f6a8635b1b66f2434d5556b1044c14b1ccaf\", \"lessThan\": \"560992f41c0cea44b7603bc9e6c73bffbf6b5709\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"0655f6a8635b1b66f2434d5556b1044c14b1ccaf\", \"lessThan\": \"19b3f72a41a8751e26bffc093bb7e1cef29ad579\", \"versionType\": \"git\"}], \"programFiles\": [\"net/tipc/netlink.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.19\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.19\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.330\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.299\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.261\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.201\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.139\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.63\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.5.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/tipc/netlink.c\"], \"defaultStatus\": \"affected\"}], \"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\"}], \"x_generator\": {\"engine\": \"bippy-7c5fe7eed585\"}, \"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.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-04-09T14:51:12.702Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-52845\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-09T14:51:12.702Z\", \"dateReserved\": \"2024-05-21T15:19:24.254Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-21T15:31:43.181Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.