ghsa-99vg-6g53-53wq
Vulnerability from github
Published
2024-02-27 09:31
Modified
2024-04-10 15:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_limit: avoid possible divide error in nft_limit_init

div_u64() divides u64 by u32.

nft_limit_init() wants to divide u64 by u64, use the appropriate math function (div64_u64)

divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8390 Comm: syz-executor188 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:div_u64_rem include/linux/math64.h:28 [inline] RIP: 0010:div_u64 include/linux/math64.h:127 [inline] RIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85 Code: ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45 89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00 RSP: 0018:ffffc90009447198 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000200000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003 RBP: ffff888020f80908 R08: 0000200000000000 R09: 0000000000000000 R10: ffffffff875152d8 R11: 0000000000000000 R12: ffffc90009447270 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nf_tables_newexpr net/netfilter/nf_tables_api.c:2675 [inline] nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713 nft_set_elem_expr_alloc+0x27/0x280 net/netfilter/nf_tables_api.c:5160 nf_tables_newset+0x1997/0x3150 net/netfilter/nf_tables_api.c:4321 nfnetlink_rcv_batch+0x85a/0x21b0 net/netfilter/nfnetlink.c:456 nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580 [inline] nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598 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 _syssendmsg+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 entry_SYSCALL_64_after_hwframe+0x44/0xae

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{
  "affected": [],
  "aliases": [
    "CVE-2021-46915"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-369"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T07:15:08Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_limit: avoid possible divide error in nft_limit_init\n\ndiv_u64() divides u64 by u32.\n\nnft_limit_init() wants to divide u64 by u64, use the appropriate\nmath function (div64_u64)\n\ndivide error: 0000 [#1] PREEMPT SMP KASAN\nCPU: 1 PID: 8390 Comm: syz-executor188 Not tainted 5.12.0-rc4-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:div_u64_rem include/linux/math64.h:28 [inline]\nRIP: 0010:div_u64 include/linux/math64.h:127 [inline]\nRIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85\nCode: ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45 89 ed 31 d2 4c 89 f0 \u003c49\u003e f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00\nRSP: 0018:ffffc90009447198 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 0000200000000000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003\nRBP: ffff888020f80908 R08: 0000200000000000 R09: 0000000000000000\nR10: ffffffff875152d8 R11: 0000000000000000 R12: ffffc90009447270\nR13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\nFS:  000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n nf_tables_newexpr net/netfilter/nf_tables_api.c:2675 [inline]\n nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713\n nft_set_elem_expr_alloc+0x27/0x280 net/netfilter/nf_tables_api.c:5160\n nf_tables_newset+0x1997/0x3150 net/netfilter/nf_tables_api.c:4321\n nfnetlink_rcv_batch+0x85a/0x21b0 net/netfilter/nfnetlink.c:456\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580 [inline]\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598\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\n entry_SYSCALL_64_after_hwframe+0x44/0xae",
  "id": "GHSA-99vg-6g53-53wq",
  "modified": "2024-04-10T15:30:31Z",
  "published": "2024-02-27T09:31:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46915"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01fb1626b620cb37a65ad08e0f626489e8f042ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1bb3ee4259936cc3b2d80a4a480bbb4868575071"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9065ccb9ec92c5120e7e97958397ebdb454f23d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b895bdf5d643b6feb7c60856326dd4feb6981560"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dc1732baa9da5b68621586bf8636ebbc27dc62d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fadd3c4afdf3d4c21f4d138502f8b76334987e26"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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