CVE-2022-49295
nbd: call genl_unregister_family() first in nbd_cleanup()
At a glance
- Source
- NVD
- EPSS
- EPSS 0.25 % · percentile 17 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
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-)
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://git.kernel.org/stable/c/8a1435c862ea09b06be7acda325128dc08458e25
- https://git.kernel.org/stable/c/013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c
- https://git.kernel.org/stable/c/1be608e1ee1f222464b2856bda9b85ab5184a33e
- https://git.kernel.org/stable/c/c0868f6e728c3c28bef0e8bee89d2daf86a8bbca
- https://git.kernel.org/stable/c/cbeafa7a79d08ecdb55f8f1d41a11323d0f709db
- https://git.kernel.org/stable/c/6f505bbb8063fd3a238a4239d2d8c165e5279f6f
- https://git.kernel.org/stable/c/3d5da1ffba3388c2ae2e6c598855a4d887d3bf79
- https://git.kernel.org/stable/c/06c4da89c24e7023ea448cadf8e9daf06a0aae6e
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | MEDIUM 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| CVSS 3.1 | MEDIUM 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.1 | MEDIUM 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2022-54931
- GCVE · GCVE-0-2022-49295
CERT-FR advisories
- CERTFR-2025-AVI-0336 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0307 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0252 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*< 4.14.283cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.247cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.198cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.122cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.47cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.17.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.18 < 5.18.4
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected e46c7287b1c27683a8e30ca825fb98e2b97f1099 < 8a1435c862ea09b06be7acda325128dc08458e25 ; affected e46c7287b1c27683a8e30ca825fb98e2b97f1099 < 013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c ; affected e46c7287b1c27683a8e30ca825fb98e2b97f1099 < 1be608e1ee1f222464b2856bda9b85ab5184a33e ; affected e46c7287b1c27683a8e30ca825fb98e2b97f1099 < c0868f6e728c3c28bef0e8bee89d2daf86a8bbca ; affected e46c7287b1c27683a8e30ca825fb98e2b97f1099 < cbeafa7a79d08ecdb55f8f1d41a11323d0f709db ; affected e46c7287b1c27683a8e30ca825fb98e2b97f1099 < 6f505bbb8063fd3a238a4239d2d8c165e5279f6f |
| Linux · Linux | affected 4.12 ; unaffected 0 < 4.12 ; unaffected 4.14.283 ≤ 4.14.* ; unaffected 4.19.247 ≤ 4.19.* ; unaffected 5.4.198 ≤ 5.4.* ; unaffected 5.10.122 ≤ 5.10.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |