CVE-2025-48379

Pillow is a Python imaging library. In versions 11.2.0 to before 11.3.0, there is a heap buffer overflow when writing a sufficiently large (>64k encoded with default settings) image in the DDS format due to writing into a buffer without checking for available space. This only affects users who save untrusted data as a compressed DDS image. This issue has been patched in version 11.3.0.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-122"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48379.json"
}

References

Affected packages

Git / github.com/python-pillow/pillow

Affected ranges

Type

GIT

Repo

https://github.com/python-pillow/pillow

Events

Introduced

339bc5db93bd95decf65a59fab273f300db6594d

Fixed

ef98b3510e3e4f14b547762764813d7e5ca3c5a4

Fixed

89f1f4626a2aaf5f3d5ca6437f41def2998fbe09

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:python:pillow:11.2.1:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "11.2.1"
        },
        {
            "last_affected":  "11.2.1"
        }
    ],
    "source":  [
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

11.*

11.2.1

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-48379.json"

vanir_signatures

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            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-48379-9d8639d6",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/python-pillow/pillow/commit/ef98b3510e3e4f14b547762764813d7e5ca3c5a4",
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            "file":  "src/libImaging/BcnEncode.c"
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        "source":  "https://github.com/python-pillow/pillow/commit/ef98b3510e3e4f14b547762764813d7e5ca3c5a4",
        "target":  {
            "file":  "src/libImaging/BcnEncode.c",
            "function":  "ImagingBcnEncode"
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]

vanir_signatures_modified

"2026-08-18T17:53:11Z"