CVE-2021-46992 (GCVE-0-2021-46992)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2025-05-04 07:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: avoid overflows in nft_hash_buckets() Number of buckets being stored in 32bit variables, we have to ensure that no overflows occur in nft_hash_buckets() syzbot injected a size == 0x40000000 and reported: UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13 shift exponent 64 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327 __roundup_pow_of_two include/linux/log2.h:57 [inline] nft_hash_buckets net/netfilter/nft_set_hash.c:411 [inline] nft_hash_estimate.cold+0x19/0x1e net/netfilter/nft_set_hash.c:652 nft_select_set_ops net/netfilter/nf_tables_api.c:3586 [inline] nf_tables_newset+0xe62/0x3110 net/netfilter/nf_tables_api.c:4322 nfnetlink_rcv_batch+0xa09/0x24b0 net/netfilter/nfnetlink.c:488 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:612 [inline] nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:630 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/1e8ab479cfbe5751efccedb95afb9b112a5ba475 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/2824cafc6a93792d9ad85939c499161214d84c4b Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/a388d10961ff8578b1a6691945d406c0f33aa71b Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/a54754ec9891830ba548e2010c889e3c8146e449 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/c77e2ef18167ad334e27610ced9a7f6af5ec1787 Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67 https://git.kernel.org/stable/c/efcd730ddd6f25578bd31bfe703e593e2421d708 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/1e8ab479cfbe5751efccedb95afb9b112a5ba475 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/2824cafc6a93792d9ad85939c499161214d84c4b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/a388d10961ff8578b1a6691945d406c0f33aa71b Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/a54754ec9891830ba548e2010c889e3c8146e449 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/c77e2ef18167ad334e27610ced9a7f6af5ec1787 Patch
af854a3a-2127-422b-91ae-364da2661108 https://git.kernel.org/stable/c/efcd730ddd6f25578bd31bfe703e593e2421d708 Patch
Impacted products
Vendor Product Version
Linux Linux Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
Version: 0ed6389c483dc77cdbdd48de0ca7ce41723dd667
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    "datePublished": "2024-02-28T08:13:17.814Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-46992\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-02-28T09:15:37.833\",\"lastModified\":\"2024-12-24T14:34:12.700\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nftables: avoid overflows in nft_hash_buckets()\\n\\nNumber of buckets being stored in 32bit variables, we have to\\nensure that no overflows occur in nft_hash_buckets()\\n\\nsyzbot injected a size == 0x40000000 and reported:\\n\\nUBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\\nshift exponent 64 is too large for 64-bit type \u0027long unsigned int\u0027\\nCPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\\nCall Trace:\\n __dump_stack lib/dump_stack.c:79 [inline]\\n dump_stack+0x141/0x1d7 lib/dump_stack.c:120\\n ubsan_epilogue+0xb/0x5a lib/ubsan.c:148\\n __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327\\n __roundup_pow_of_two include/linux/log2.h:57 [inline]\\n nft_hash_buckets net/netfilter/nft_set_hash.c:411 [inline]\\n nft_hash_estimate.cold+0x19/0x1e net/netfilter/nft_set_hash.c:652\\n nft_select_set_ops net/netfilter/nf_tables_api.c:3586 [inline]\\n nf_tables_newset+0xe62/0x3110 net/netfilter/nf_tables_api.c:4322\\n nfnetlink_rcv_batch+0xa09/0x24b0 net/netfilter/nfnetlink.c:488\\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:612 [inline]\\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:630\\n netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]\\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338\\n netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927\\n sock_sendmsg_nosec net/socket.c:654 [inline]\\n sock_sendmsg+0xcf/0x120 net/socket.c:674\\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350\\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2404\\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\\n do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nftables: evitar desbordamientos en nft_hash_buckets() N\u00famero de dep\u00f3sitos almacenados en variables de 32 bits, debemos asegurarnos de que no se produzcan desbordamientos en nft_hash_buckets() syzbot inyect\u00f3 un tama\u00f1o == 0x40000000 e inform\u00f3: UBSAN: desplazamiento fuera de los l\u00edmites en ./include/linux/log2.h:57:13 el exponente de desplazamiento 64 es demasiado grande para el tipo de 64 bits \u0027long unsigned int\u0027 CPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:79 [en l\u00ednea] dump_stack +0x141/0x1d7 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327 __roundup_pow_of_two include/linux/log2.h:57 [en l\u00ednea] nft_hash_buckets net/netfilter/nft_set_hash.c:411 [en l\u00ednea] nft_hash_estimate.cold+0x19/0x1e net/netfilter/nft_set_hash.c:652 nft_select_set_ops net/netfilter/nf_tables_api.c:3586 [en l\u00ednea] nf_tables_newset+0xe62 /0x3110 net/filtro de red /nf_tables_api.c:4322 nfnetlink_rcv_batch+0xa09/0x24b0 net/netfilter/nfnetlink.c:488 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:612 [en l\u00ednea] nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:630 netlink_unicast_kernel net/ netlink/af_netlink.c:1312 [en l\u00ednea] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [en l\u00ednea] sock_sendmsg +0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 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__sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\\n do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.233\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.191\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.120\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.38\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.22\", \"versionStartIncluding\": \"4.9\"}, {\"criteria\": 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      "cveMetadata": "{\"cveId\": \"CVE-2021-46992\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:01:53.656Z\", \"dateReserved\": \"2024-02-27T18:42:55.949Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-28T08:13:17.814Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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