Privilege escalation in Linux kernel VM_PFNMAP VMA

Published: 2022-09-20
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-39188
Exploitation vector Local
Public exploit N/A
Vulnerable software
Linux kernel
Operating systems & Components / Operating system


Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Race condition

EUVDB-ID: #VU67478

Risk: Low


CVE-ID: CVE-2022-39188

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No


The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within include/asm-generic/tlb.h in the Linux kernel. A local user can exploit the race and escalate privileges on the system.

Note, this only occurs in situations with VM_PFNMAP VMAs.


Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.19

before 5.19
CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?