摘要:

In the Linux kernel, the following vulnerability has been resolved:netfilter: nf_tables: clean up hook list when offload flags check failssplice back the hook list so nft_chain_release_hook() has a chance torelease the hooks.BUG: memory leakunreferenced object 0xffff88810180b100 (size 96): comm syz-executor133 , pid 3619, jiffies 4294945714 (age 12.690s) hex dump (first 32 bytes): 28 64 23 02 81 88 ff ff 28 64 23 02 81 88 ff ff (d#.....(d#..... 90 a8 aa 83 ff ff ff ff 00 00 b5 0f 81 88 ff ff ................ backtrace: [<ffffffff83a8c59b&gt;] kmalloc include/linux/slab.h:600 [inline] [<ffffffff83a8c59b&gt;] nft_netdev_hook_alloc+0x3b/0xc0 net/netfilter/nf_tables_api.c:1901 [<ffffffff83a9239a&gt;] nft_chain_parse_netdev net/netfilter/nf_tables_api.c:1998 [inline] [<ffffffff83a9239a&gt;] nft_chain_parse_hook+0x33a/0x530 net/netfilter/nf_tables_api.c:2073 [<ffffffff83a9b14b&gt;] nf_tables_addchain.constprop.0+0x10b/0x950 net/netfilter/nf_tables_api.c:2218 [<ffffffff83a9c41b&gt;] nf_tables_newchain+0xa8b/0xc60 net/netfilter/nf_tables_api.c:2593 [<ffffffff83a3d6a6&gt;] nfnetlink_rcv_batch+0xa46/0xd20 net/netfilter/nfnetlink.c:517 [<ffffffff83a3db79&gt;] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:638 [inline] [<ffffffff83a3db79&gt;] nfnetlink_rcv+0x1f9/0x220 net/netfilter/nfnetlink.c:656 [<ffffffff83a13b17&gt;] netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] [<ffffffff83a13b17&gt;] netlink_unicast+0x397/0x4c0 net/netlink/af_netlink.c:1345 [<ffffffff83a13fd6&gt;] netlink_sendmsg+0x396/0x710 net/netlink/af_netlink.c:1921 [<ffffffff83865ab6&gt;] sock_sendmsg_nosec net/socket.c:714 [inline] [<ffffffff83865ab6&gt;] sock_sendmsg+0x56/0x80 net/socket.c:734 [<ffffffff8386601c&gt;] ____sys_sendmsg+0x36c/0x390 net/socket.c:2482 [<ffffffff8386a918&gt;] ___sys_sendmsg+0xa8/0x110 net/socket.c:2536 [<ffffffff8386aaa8&gt;] __sys_sendmsg+0x88/0x100 net/socket.c:2565 [<ffffffff845e5955&gt;] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff845e5955&gt;] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84800087&gt;] entry_SYSCALL_64_after_hwframe+0x63/0xcd

安全等级: Low

公告ID: KylinSec-SA-2024-2778

发布日期: 2024年6月19日

关联CVE: CVE-2022-48691