CVE-2021-44879 (GCVE-0-2021-44879)

Vulnerability from cvelistv5 – Published: 2022-02-13 00:00 – Updated: 2026-10-14 11:58
VLAI
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2350 records in the last 180 days details
References
Impacted products
Show details on NVD website
To clipboard 

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            "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Vendor Advisory"
            ],
            "url": "https://bugzilla.kernel.org/show_bug.cgi?id=215231"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Vendor Advisory"
            ],
            "url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9056d6489f5a41cfbb67f719d2c0ce61ead72d9f"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lore.kernel.org/linux-f2fs-devel/20211206144421.3735-3-chao%40kernel.org/T/"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-794697.html"
          },
          {
            "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-831302.html"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-02-18T16:53:30+00:00",
      "cve": "CVE-2021-44879",
      "id": "CVE-2021-44879",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: NULL pointer dereference in folio_mark_dirty() via a crafted f2fs image",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-44879.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-11T02:04:42Z",
      "cve": "CVE-2021-44879",
      "id": "CVE-2021-44879",
      "initial_release_date": "2023-02-15T03:36:29Z",
      "product_status:known_affected": "207",
      "product_status:known_not_affected": "99",
      "product_status:recommended": "1446",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-44879",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-44879.json",
      "version": "41"
    }
  }
}



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