CVE-2021-46915

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-46915
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 ____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 entry_SYSCALL_64_after_hwframe+0x44/0xae

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/01fb1626b620cb37a65ad08e0f626489e8f042ef Patch
https://git.kernel.org/stable/c/1bb3ee4259936cc3b2d80a4a480bbb4868575071 Patch
https://git.kernel.org/stable/c/9065ccb9ec92c5120e7e97958397ebdb454f23d6 Patch
https://git.kernel.org/stable/c/b895bdf5d643b6feb7c60856326dd4feb6981560 Patch
https://git.kernel.org/stable/c/dc1732baa9da5b68621586bf8636ebbc27dc62d2 Patch
https://git.kernel.org/stable/c/fadd3c4afdf3d4c21f4d138502f8b76334987e26 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

10 Apr 2024, 13:55

Type Values Removed Values Added
CWE CWE-369
References () https://git.kernel.org/stable/c/01fb1626b620cb37a65ad08e0f626489e8f042ef - () https://git.kernel.org/stable/c/01fb1626b620cb37a65ad08e0f626489e8f042ef - Patch
References () https://git.kernel.org/stable/c/1bb3ee4259936cc3b2d80a4a480bbb4868575071 - () https://git.kernel.org/stable/c/1bb3ee4259936cc3b2d80a4a480bbb4868575071 - Patch
References () https://git.kernel.org/stable/c/9065ccb9ec92c5120e7e97958397ebdb454f23d6 - () https://git.kernel.org/stable/c/9065ccb9ec92c5120e7e97958397ebdb454f23d6 - Patch
References () https://git.kernel.org/stable/c/b895bdf5d643b6feb7c60856326dd4feb6981560 - () https://git.kernel.org/stable/c/b895bdf5d643b6feb7c60856326dd4feb6981560 - Patch
References () https://git.kernel.org/stable/c/dc1732baa9da5b68621586bf8636ebbc27dc62d2 - () https://git.kernel.org/stable/c/dc1732baa9da5b68621586bf8636ebbc27dc62d2 - Patch
References () https://git.kernel.org/stable/c/fadd3c4afdf3d4c21f4d138502f8b76334987e26 - () https://git.kernel.org/stable/c/fadd3c4afdf3d4c21f4d138502f8b76334987e26 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

27 Feb 2024, 14:20

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: netfilter: nft_limit: evita posible error de división en nft_limit_init div_u64() divide u64 entre u32. nft_limit_init() quiere dividir u64 entre u64, use la función matemática apropiada (div64_u64) error de división: 0000 [#1] CPU PREEMPT SMP KASAN: 1 PID: 8390 Comm: syz-executor188 Not tainted 5.12.0-rc4-syzkaller # 0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:div_u64_rem include/linux/math64.h:28 [en línea] RIP: 0010:div_u64 include/linux/math64.h: 127 [en línea] RIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85 Código: 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 &lt;49&gt; f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00 RSP: 0018:ffffc90009447198 EF LAGS: 00010246 RAX: 0000000000000000 RBX: 0000200000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003 RBP: ffff888 020f80908 R08: 0000200000000000 R09: 0000000000000000 R10: ffffffff875152d8 R11: 0000000000000000 R12: ffffc90009447270 R13: 000000000000 0000 R14: 0000000000000000 R15: 0000000000000000 FS: 000000000097a300(0000) GS :ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c4 CR3: 0000000026a52000 CR 4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000000000 DR6: 00000000ffe0ff0 DR7: 00000 00000000400 Rastreo de llamadas: nf_tables_newexpr net/netfilter/nf_tables_api.c:2675 [en línea] 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 [en línea] nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:59 8 netlink_unicast_kernel red/netlink /af_netlink.c:1312 [en línea] 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 línea] 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_sys llamada_64+0x2d/ 0x70 arch/x86/entry/common.c:46 entrada_SYSCALL_64_after_hwframe+0x44/0xae

27 Feb 2024, 07:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-27 07:15

Updated : 2024-04-10 13:55

NVD link : CVE-2021-46915

Mitre link : CVE-2021-46915

CVE.ORG link : CVE-2021-46915

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-369

Divide By Zero