{"id":"DEBIAN-CVE-2022-49295","details":"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-)","modified":"2026-09-01T16:05:30.474022099Z","published":"2025-02-26T07:01:06.333Z","upstream":["CVE-2022-49295"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-49295"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49295.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49295.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-49295.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}