{"cve":"CVE-2022-49153","nvd":{"published":"2025-02-26T07:00:52.533","modified":"2026-06-17T05:17:13.757","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwireguard: socket: free skb in send6 when ipv6 is disabled\n\nI got a memory leak report:\n\nunreferenced object 0xffff8881191fc040 (size 232):\n  comm \"kworker/u17:0\", pid 23193, jiffies 4295238848 (age 3464.870s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<ffffffff814c3ef4>] slab_post_alloc_hook+0x84/0x3b0\n    [<ffffffff814c8977>] kmem_cache_alloc_node+0x167/0x340\n    [<ffffffff832974fb>] __alloc_skb+0x1db/0x200\n    [<ffffffff82612b5d>] wg_socket_send_buffer_to_peer+0x3d/0xc0\n    [<ffffffff8260e94a>] wg_packet_send_handshake_initiation+0xfa/0x110\n    [<ffffffff8260ec81>] wg_packet_handshake_send_worker+0x21/0x30\n    [<ffffffff8119c558>] process_one_work+0x2e8/0x770\n    [<ffffffff8119ca2a>] worker_thread+0x4a/0x4b0\n    [<ffffffff811a88e0>] kthread+0x120/0x160\n    [<ffffffff8100242f>] ret_from_fork+0x1f/0x30\n\nIn function wg_socket_send_buffer_as_reply_to_skb() or wg_socket_send_\nbuffer_to_peer(), the semantics of send6() is required to free skb. But\nwhen CONFIG_IPV6 is disable, kfree_skb() is missing. This patch adds it\nto fix this bug.","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/096f9d35cac0a0c95ffafc00db84786b665a4837","https://git.kernel.org/stable/c/0b19bcb753dbfb74710d12bb2761ec5ed706c726","https://git.kernel.org/stable/c/402991a9771587acc2947cf6c4d689c5397f2258","https://git.kernel.org/stable/c/bbbf962d9460194993ee1943a793a0a0af4a7fbf","https://git.kernel.org/stable/c/ebcc492f4ba14bae54b898f1016a37b4282558d1"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49153","score":0.00261,"percentile":0.17957,"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."]}