CVE-2022-1247

Kernel crash via unlocked ROSE neighbour reference

Published Aug 31, 2022 · Updated Aug 2, 2024

Use-after-free in the Linux Kernel ROSE networking driver allows local users to crash the kernel by racing route deletion with connection setup. rose_connect increments rose_neigh->use without rose_neigh_list_lock, while rose_del_node can observe zero use and free the same neighbour. Low-privileged local access plus the AF_ROSE driver is required; the published proof demonstrates a use-after-free and kernel crash.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux Kernel ROSE networking driver allows local users to crash the kernel by racing route deletion with connection setup. rose_connect increments rose_neigh->use without rose_neigh_list_lock, while rose_del_node can observe zero use and free the same neighbour. Low-privileged local access plus the AF_ROSE driver is required; the published proof demonstrates a use-after-free and kernel crash.

The record

CVE
CVE-2022-1247
Published
Aug 31, 2022
Updated
Aug 2, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-366, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 31, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=Not-Known

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=Not-Known

Published CVSS scores

7.8Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-366Race Condition within a Thread
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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