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Findings

CVE-2022-39188

An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19.

Published Sep 2, 2022 · updated Oct 14, 2026 · linux linux kernel

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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 2, 2022 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

Affected

  • cpe debian/debian linux10.0
  • cpe debian/debian linux11.0
  • cpe linux/linux kernelversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2022-39188

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-39188

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2022-39188

    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.

    nvd.nist.gov

References