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Findings

CVE-2021-44879

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

Published Feb 14, 2022 · updated Oct 14, 2026 · linux linux kernel

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

Code

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

Timeline

Detection, updates, and resolution for this record.

  1. Feb 14, 2022 · NIST NVD

    Detected

    In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

  2. Oct 14, 2026 · NIST NVD

    Updated

    In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

Affected

  • cpe linux/linux kernelversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2021-44879

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-44879

    30-day exploitation probability 1.5%

    first.org
  • NIST NVDVulnerability recordCVE-2021-44879

    In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

    nvd.nist.gov

References