CVE-2021-46915 (GCVE-0-2021-46915)
Vulnerability from cvelistv5
Published
2024-02-27 06:53
Modified
2025-05-04 07:00
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: c26844eda9d4fdbd266660e3b3de2d0270e3a1ed Version: c26844eda9d4fdbd266660e3b3de2d0270e3a1ed Version: c26844eda9d4fdbd266660e3b3de2d0270e3a1ed Version: c26844eda9d4fdbd266660e3b3de2d0270e3a1ed Version: c26844eda9d4fdbd266660e3b3de2d0270e3a1ed Version: c26844eda9d4fdbd266660e3b3de2d0270e3a1ed |
||
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\"https://git.kernel.org/stable/c/9065ccb9ec92c5120e7e97958397ebdb454f23d6\"}, {\"url\": \"https://git.kernel.org/stable/c/fadd3c4afdf3d4c21f4d138502f8b76334987e26\"}, {\"url\": \"https://git.kernel.org/stable/c/01fb1626b620cb37a65ad08e0f626489e8f042ef\"}, {\"url\": \"https://git.kernel.org/stable/c/dc1732baa9da5b68621586bf8636ebbc27dc62d2\"}, {\"url\": \"https://git.kernel.org/stable/c/1bb3ee4259936cc3b2d80a4a480bbb4868575071\"}, {\"url\": \"https://git.kernel.org/stable/c/b895bdf5d643b6feb7c60856326dd4feb6981560\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.232\", \"versionStartIncluding\": \"4.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.189\", \"versionStartIncluding\": \"4.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.114\", \"versionStartIncluding\": \"4.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.32\", \"versionStartIncluding\": \"4.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.16\", \"versionStartIncluding\": \"4.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12\", \"versionStartIncluding\": \"4.13\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:00:16.535Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-46915\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:00:16.535Z\", \"dateReserved\": \"2024-02-25T13:45:52.718Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-27T06:53:54.148Z\", \"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 seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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