{"uuid": "a373d950-be4f-4716-af01-0a5838e2d969", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2022-49295", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/5422", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2022-49295\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: call genl_unregister_family() first in nbd_cleanup()\n\nOtherwise there may be race between module removal and the handling of\nnetlink command, which can lead to the oops as shown below:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000098\n  Oops: 0002 [#1] SMP PTI\n  CPU: 1 PID: 31299 Comm: nbd-client Tainted: G            E     5.14.0-rc4\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)\n  RIP: 0010:down_write+0x1a/0x50\n  Call Trace:\n   start_creating+0x89/0x130\n   debugfs_create_dir+0x1b/0x130\n   nbd_start_device+0x13d/0x390 [nbd]\n   nbd_genl_connect+0x42f/0x748 [nbd]\n   genl_family_rcv_msg_doit.isra.0+0xec/0x150\n   genl_rcv_msg+0xe5/0x1e0\n   netlink_rcv_skb+0x55/0x100\n   genl_rcv+0x29/0x40\n   netlink_unicast+0x1a8/0x250\n   netlink_sendmsg+0x21b/0x430\n   ____sys_sendmsg+0x2a4/0x2d0\n   ___sys_sendmsg+0x81/0xc0\n   __sys_sendmsg+0x62/0xb0\n   __x64_sys_sendmsg+0x1f/0x30\n   do_syscall_64+0x3b/0xc0\n   entry_SYSCALL_64_after_hwframe+0x44/0xae\n  Modules linked in: nbd(E-)\n\ud83d\udccf Published: 2025-02-26T02:01:25.659Z\n\ud83d\udccf Modified: 2025-02-26T02:01:25.659Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/8a1435c862ea09b06be7acda325128dc08458e25\n2. https://git.kernel.org/stable/c/013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c\n3. https://git.kernel.org/stable/c/1be608e1ee1f222464b2856bda9b85ab5184a33e\n4. https://git.kernel.org/stable/c/c0868f6e728c3c28bef0e8bee89d2daf86a8bbca\n5. https://git.kernel.org/stable/c/cbeafa7a79d08ecdb55f8f1d41a11323d0f709db\n6. https://git.kernel.org/stable/c/6f505bbb8063fd3a238a4239d2d8c165e5279f6f\n7. https://git.kernel.org/stable/c/3d5da1ffba3388c2ae2e6c598855a4d887d3bf79\n8. https://git.kernel.org/stable/c/06c4da89c24e7023ea448cadf8e9daf06a0aae6e", "creation_timestamp": "2025-02-26T02:23:19.000000Z"}