CVE-2022-49295

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-49295
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49295.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-49295
Related
Published
2025-02-26T07:01:06Z
Modified
2025-04-14T20:59:06.138097Z
Downstream
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

nbd: call genlunregisterfamily() 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:downwrite+0x1a/0x50 Call Trace: startcreating+0x89/0x130 debugfscreatedir+0x1b/0x130 nbdstartdevice+0x13d/0x390 [nbd] nbdgenlconnect+0x42f/0x748 [nbd] genlfamilyrcvmsgdoit.isra.0+0xec/0x150 genlrcvmsg+0xe5/0x1e0 netlinkrcvskb+0x55/0x100 genlrcv+0x29/0x40 netlinkunicast+0x1a8/0x250 netlinksendmsg+0x21b/0x430 syssendmsg+0x2a4/0x2d0 syssendmsg+0x81/0xc0 _syssendmsg+0x62/0xb0 _x64syssendmsg+0x1f/0x30 dosyscall64+0x3b/0xc0 entrySYSCALL64after_hwframe+0x44/0xae Modules linked in: nbd(E-)

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.127-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.18.5-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.18.5-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}