CVE-2022-39188

kernel: unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry

Published Sep 2, 2022 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Description
An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3131-1 linux security update
Debian DLA Debian DLA DLA-3173-1 linux-5.10 security update
Debian DSA Debian DSA DSA-5257-1 linux security update
EUVD EUVD EUVD-2022-41733 An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.
Ubuntu USN Ubuntu USN USN-5790-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5791-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5791-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5791-3 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-5792-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5792-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5815-1 Linux kernel (BlueField) vulnerabilities
Ubuntu USN Ubuntu USN USN-5877-1 Linux kernel (GKE) vulnerabilities
Ubuntu USN Ubuntu USN USN-6001-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6013-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-6014-1 Linux kernel vulnerabilities
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 14, 2026, 5:39 PM
Reserved
Sep 2, 2022, 12:00 AM
Status
Modified
Published
Sep 2, 2022, 5:15 AM
Modified
Oct 14, 2026, 6:17 PM
Severity
Moderate
Public date
Jul 6, 2022, 4:30 PM