CVE - CVE-2022-49295

CVE-ID
CVE-2022-49295	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: nbd: call genl_unregister_family() first in nbd_cleanup() Otherwise there may be race between module removal and the handling of netlink command, which can lead to the oops as shown below: BUG: kernel NULL pointer dereference, address: 0000000000000098 Oops: 0002 [#1] SMP PTI CPU: 1 PID: 31299 Comm: nbd-client Tainted: G E 5.14.0-rc4 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:down_write+0x1a/0x50 Call Trace: start_creating+0x89/0x130 debugfs_create_dir+0x1b/0x130 nbd_start_device+0x13d/0x390 [nbd] nbd_genl_connect+0x42f/0x748 [nbd] genl_family_rcv_msg_doit.isra.0+0xec/0x150 genl_rcv_msg+0xe5/0x1e0 netlink_rcv_skb+0x55/0x100 genl_rcv+0x29/0x40 netlink_unicast+0x1a8/0x250 netlink_sendmsg+0x21b/0x430 ____sys_sendmsg+0x2a4/0x2d0 ___sys_sendmsg+0x81/0xc0 __sys_sendmsg+0x62/0xb0 __x64_sys_sendmsg+0x1f/0x30 do_syscall_64+0x3b/0xc0 entry_SYSCALL_64_after_hwframe+0x44/0xae Modules linked in: nbd(E-)
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c URL:https://git.kernel.org/stable/c/013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c MISC:https://git.kernel.org/stable/c/06c4da89c24e7023ea448cadf8e9daf06a0aae6e URL:https://git.kernel.org/stable/c/06c4da89c24e7023ea448cadf8e9daf06a0aae6e MISC:https://git.kernel.org/stable/c/1be608e1ee1f222464b2856bda9b85ab5184a33e URL:https://git.kernel.org/stable/c/1be608e1ee1f222464b2856bda9b85ab5184a33e MISC:https://git.kernel.org/stable/c/3d5da1ffba3388c2ae2e6c598855a4d887d3bf79 URL:https://git.kernel.org/stable/c/3d5da1ffba3388c2ae2e6c598855a4d887d3bf79 MISC:https://git.kernel.org/stable/c/6f505bbb8063fd3a238a4239d2d8c165e5279f6f URL:https://git.kernel.org/stable/c/6f505bbb8063fd3a238a4239d2d8c165e5279f6f MISC:https://git.kernel.org/stable/c/8a1435c862ea09b06be7acda325128dc08458e25 URL:https://git.kernel.org/stable/c/8a1435c862ea09b06be7acda325128dc08458e25 MISC:https://git.kernel.org/stable/c/c0868f6e728c3c28bef0e8bee89d2daf86a8bbca URL:https://git.kernel.org/stable/c/c0868f6e728c3c28bef0e8bee89d2daf86a8bbca MISC:https://git.kernel.org/stable/c/cbeafa7a79d08ecdb55f8f1d41a11323d0f709db URL:https://git.kernel.org/stable/c/cbeafa7a79d08ecdb55f8f1d41a11323d0f709db
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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