CVE-2022-1729

Local root escalation via perf context race

Published Sep 1, 2022 · Updated Aug 3, 2024

Race condition in the Linux kernel perf subsystem allows local users to gain root privileges through concurrent perf_event_open() calls. The !move_group path checks group_leader->ctx without holding context locks, allowing event creation to strand an event in two contexts and leave a dangling pointer after closure. Systems permitting unprivileged perf access expose the resulting use-after-free, which supports kernel-address disclosure and arbitrary code execution as root.

CVSS severity7.0
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux kernel perf subsystem allows local users to gain root privileges through concurrent perf_event_open() calls. The !move_group path checks group_leader->ctx without holding context locks, allowing event creation to strand an event in two contexts and leave a dangling pointer after closure. Systems permitting unprivileged perf access expose the resulting use-after-free, which supports kernel-address disclosure and arbitrary code execution as root.

The record

CVE
CVE-2022-1729
Published
Sep 1, 2022
Updated
Aug 3, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-362, CWE-366, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 1, 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 5.18 rc9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=linux kernel 5.18 rc9

Published CVSS scores

7.0NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-366Race Condition within a Thread
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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