CVE-2022-49295
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
nbd: call genl_unregister_family() first in nbd_cleanup()
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-)
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | 8a1435c862ea09b06be7acda325128dc08458e25 | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | 013a79f1b5c89290e2e97f1ebf14b14e0cf5fe5c | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | 1be608e1ee1f222464b2856bda9b85ab5184a33e | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | c0868f6e728c3c28bef0e8bee89d2daf86a8bbca | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | cbeafa7a79d08ecdb55f8f1d41a11323d0f709db | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | 6f505bbb8063fd3a238a4239d2d8c165e5279f6f | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | 3d5da1ffba3388c2ae2e6c598855a4d887d3bf79 | Unavailable | None listed |
| e46c7287b1c27683a8e30ca825fb98e2b97f1099 | affected | git | 06c4da89c24e7023ea448cadf8e9daf06a0aae6e | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.12 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.12 | Unavailable | None listed |
| 4.14.283 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.247 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.198 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.122 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.47 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.17.15 | unaffected | semver | Unavailable | 5.17.* | None listed |
| 5.18.4 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19 | unaffected | original_commit_for_fix | Unavailable | * | None listed |