{"cve":"CVE-2022-48691","nvd":{"published":"2024-05-03T15:15:07.887","modified":"2026-06-17T05:15:56.110","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: clean up hook list when offload flags check fails\n\nsplice back the hook list so nft_chain_release_hook() has a chance to\nrelease the hooks.\n\nBUG: memory leak\nunreferenced object 0xffff88810180b100 (size 96):\n  comm \"syz-executor133\", pid 3619, jiffies 4294945714 (age 12.690s)\n  hex dump (first 32 bytes):\n    28 64 23 02 81 88 ff ff 28 64 23 02 81 88 ff ff  (d#.....(d#.....\n    90 a8 aa 83 ff ff ff ff 00 00 b5 0f 81 88 ff ff  ................\n  backtrace:\n    [<ffffffff83a8c59b>] kmalloc include/linux/slab.h:600 [inline]\n    [<ffffffff83a8c59b>] nft_netdev_hook_alloc+0x3b/0xc0 net/netfilter/nf_tables_api.c:1901\n    [<ffffffff83a9239a>] nft_chain_parse_netdev net/netfilter/nf_tables_api.c:1998 [inline]\n    [<ffffffff83a9239a>] nft_chain_parse_hook+0x33a/0x530 net/netfilter/nf_tables_api.c:2073\n    [<ffffffff83a9b14b>] nf_tables_addchain.constprop.0+0x10b/0x950 net/netfilter/nf_tables_api.c:2218\n    [<ffffffff83a9c41b>] nf_tables_newchain+0xa8b/0xc60 net/netfilter/nf_tables_api.c:2593\n    [<ffffffff83a3d6a6>] nfnetlink_rcv_batch+0xa46/0xd20 net/netfilter/nfnetlink.c:517\n    [<ffffffff83a3db79>] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:638 [inline]\n    [<ffffffff83a3db79>] nfnetlink_rcv+0x1f9/0x220 net/netfilter/nfnetlink.c:656\n    [<ffffffff83a13b17>] netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n    [<ffffffff83a13b17>] netlink_unicast+0x397/0x4c0 net/netlink/af_netlink.c:1345\n    [<ffffffff83a13fd6>] netlink_sendmsg+0x396/0x710 net/netlink/af_netlink.c:1921\n    [<ffffffff83865ab6>] sock_sendmsg_nosec net/socket.c:714 [inline]\n    [<ffffffff83865ab6>] sock_sendmsg+0x56/0x80 net/socket.c:734\n    [<ffffffff8386601c>] ____sys_sendmsg+0x36c/0x390 net/socket.c:2482\n    [<ffffffff8386a918>] ___sys_sendmsg+0xa8/0x110 net/socket.c:2536\n    [<ffffffff8386aaa8>] __sys_sendmsg+0x88/0x100 net/socket.c:2565\n    [<ffffffff845e5955>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n    [<ffffffff845e5955>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n    [<ffffffff84800087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/1ce55ec5cb7c573c983dffbe290b8d17caf1f157","https://git.kernel.org/stable/c/77972a36ecc4db7fc7c68f0e80714263c5f03f65","https://git.kernel.org/stable/c/910891a2a44cdc49efcc4fe7459c1085ba00d0f4","https://git.kernel.org/stable/c/94ed8eeb8d9aeb00e4f4e19b83a2e28b6442fbc5","https://git.kernel.org/stable/c/1ce55ec5cb7c573c983dffbe290b8d17caf1f157"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:49:23.840078609+00:00"},"epss":{"cve":"CVE-2022-48691","score":0.0023,"percentile":0.13916,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}