cbcvebase.
CVE-2021-46915
published 2024-02-27

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…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
15.3th percentile
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 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_un

Affected

17 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.10.38-1 (bookworm)linux 5.10.38-1 (bookworm)
linuxlinux——
linuxlinux>= c26844eda9d4fdbd266660e3b3de2d0270e3a1ed < 9065ccb9ec92c5120e7e97958397ebdb454f23d69065ccb9ec92c5120e7e97958397ebdb454f23d6
linuxlinux>= c26844eda9d4fdbd266660e3b3de2d0270e3a1ed < fadd3c4afdf3d4c21f4d138502f8b76334987e26fadd3c4afdf3d4c21f4d138502f8b76334987e26
linuxlinux>= c26844eda9d4fdbd266660e3b3de2d0270e3a1ed < 01fb1626b620cb37a65ad08e0f626489e8f042ef01fb1626b620cb37a65ad08e0f626489e8f042ef
linuxlinux>= c26844eda9d4fdbd266660e3b3de2d0270e3a1ed < dc1732baa9da5b68621586bf8636ebbc27dc62d2dc1732baa9da5b68621586bf8636ebbc27dc62d2
linuxlinux>= c26844eda9d4fdbd266660e3b3de2d0270e3a1ed < 1bb3ee4259936cc3b2d80a4a480bbb48685750711bb3ee4259936cc3b2d80a4a480bbb4868575071
linuxlinux>= c26844eda9d4fdbd266660e3b3de2d0270e3a1ed < b895bdf5d643b6feb7c60856326dd4feb6981560b895bdf5d643b6feb7c60856326dd4feb6981560
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 4.13.0 < 4.14.2324.14.232
linuxlinux_kernel>= 4.15.0 < 4.19.1894.19.189
linuxlinux_kernel>= 4.20.0 < 5.4.1145.4.114
linuxlinux_kernel>= 5.11.0 < 5.11.165.11.16
linuxlinux_kernel>= 5.5.0 < 5.10.325.10.32

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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