cbcvebase.
CVE-2021-46992
published 2024-02-28

CVE-2021-46992: In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: avoid overflows in nft_hash_buckets() Number of buckets being stored…

PriorityP430high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.26%
17.7th percentile
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

Affected

19 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.10.38-1 (bookworm)linux 5.10.38-1 (bookworm)
linuxlinux——
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < 2824cafc6a93792d9ad85939c499161214d84c4b2824cafc6a93792d9ad85939c499161214d84c4b
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < efcd730ddd6f25578bd31bfe703e593e2421d708efcd730ddd6f25578bd31bfe703e593e2421d708
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < c77e2ef18167ad334e27610ced9a7f6af5ec1787c77e2ef18167ad334e27610ced9a7f6af5ec1787
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < 72b49dd116ca00a46a11d5a4d8d7987f05ed9cd772b49dd116ca00a46a11d5a4d8d7987f05ed9cd7
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < 1e8ab479cfbe5751efccedb95afb9b112a5ba4751e8ab479cfbe5751efccedb95afb9b112a5ba475
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < a388d10961ff8578b1a6691945d406c0f33aa71ba388d10961ff8578b1a6691945d406c0f33aa71b
linuxlinux>= 0ed6389c483dc77cdbdd48de0ca7ce41723dd667 < a54754ec9891830ba548e2010c889e3c8146e449a54754ec9891830ba548e2010c889e3c8146e449
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>= 4.15 < 4.19.1914.19.191
linuxlinux_kernel>= 4.20 < 5.4.1205.4.120
linuxlinux_kernel>= 4.9 < 4.14.2334.14.233
linuxlinux_kernel>= 5.11 < 5.11.225.11.22
linuxlinux_kernel>= 5.12 < 5.12.55.12.5
linuxlinux_kernel>= 5.5 < 5.10.385.10.38

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.1HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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