CVE-2022-2961

Local privilege escalation via concurrent ROSE binds

Published Aug 29, 2022 · Updated Aug 3, 2024

Use-after-free in Linux kernel 6.0-rc2 PLP ROSE support allows local users to crash the kernel or escalate privileges through concurrent binds. rose_bind() lacks socket locking, so concurrent calls can insert one socket twice into rose_list and leave a freed socket reachable. Exploitation requires local low-privileged access and AX.25/ROSE support; successful races expose kernel data, crash the host, or enable privilege escalation.

CVSS severity7.0
High
EPSS probability0.32%
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 Linux kernel 6.0-rc2 PLP ROSE support allows local users to crash the kernel or escalate privileges through concurrent binds. rose_bind() lacks socket locking, so concurrent calls can insert one socket twice into rose_list and leave a freed socket reachable. Exploitation requires local low-privileged access and AX.25/ROSE support; successful races expose kernel data, crash the host, or enable privilege escalation.

The record

CVE
CVE-2022-2961
Published
Aug 29, 2022
Updated
Aug 3, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 29, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Linux kernel 6.0-rc2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=Linux kernel 6.0-rc2

Published CVSS scores

7.0UbuntuCVSS: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-416Use After Free
T1068Exploitation for Privilege Escalation

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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