CVE-2025-8534

A vulnerability classified as problematic was found in libtiff 4.6.0. This vulnerability affects the function PSLvl2page of the file tools/tiff2ps.c of the component tiff2ps. The manipulation leads to null pointer dereference. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used. The name of the patch is 6ba36f159fd396ad11bf6b7874554197736ecc8b. It is recommended to apply a patch to fix this issue. One of the maintainers explains, that "[t]his error only occurs if DEFERSTRILE_LOAD (defer-strile-load:BOOL=ON) or TIFFOpen( .. "rD") option is used."

Database specific

{
    "cwe_ids": [
        "CWE-404",
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8534.json",
    "cna_assigner": "VulDB"
}

References

Affected packages

Git / gitlab.com/libtiff/libtiff

Affected ranges

Type

GIT

Repo

https://gitlab.com/libtiff/libtiff

Events

Introduced

8b20804fc0ddeaa93667b799b5e1a2a7dc9e3fb2

Fixed

6ba36f159fd396ad11bf6b7874554197736ecc8b

Database specific

{
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:libtiff:libtiff:4.6.0:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "4.6.0"
        },
        {
            "last_affected": "4.6.0"
        }
    ]
}

Affected versions

4.*

4.6.0

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-8534.json"

vanir_signatures_modified

"2026-07-15T00:57:52Z"

vanir_signatures

[
    {
        "deprecated": false,
        "signature_type": "Function",
        "source": "https://gitlab.com/libtiff/libtiff@6ba36f159fd396ad11bf6b7874554197736ecc8b",
        "digest": {
            "length": 3326.0,
            "function_hash": "91583570104455163202250837131813124708"
        },
        "signature_version": "v1",
        "target": {
            "function": "PS_Lvl2page",
            "file": "tools/tiff2ps.c"
        },
        "id": "CVE-2025-8534-20a77cd9"
    },
    {
        "deprecated": false,
        "signature_type": "Line",
        "source": "https://gitlab.com/libtiff/libtiff@6ba36f159fd396ad11bf6b7874554197736ecc8b",
        "digest": {
            "line_hashes": [
                "66010728401347950632481141344106927806",
                "30309341406779087731807524766030832374",
                "237640051994053208890125335795565055857",
                "170917099753942250057626239113454077275",
                "37135018823417519995940875761722544602",
                "234183983550544435930585564013067360713",
                "135738591895325296574303272959092106317",
                "102849194517493874895129014547546986391",
                "229117640688502667454110072029596038188",
                "217777485643918110496169381623053221631",
                "227295472982473835702727473065944153648",
                "234188196930821140230723099127431109295",
                "101552235832530412391833483767824049597"
            ],
            "threshold": 0.9
        },
        "signature_version": "v1",
        "target": {
            "file": "tools/tiff2ps.c"
        },
        "id": "CVE-2025-8534-aa602abe"
    },
    {
        "deprecated": false,
        "signature_type": "Function",
        "source": "https://gitlab.com/libtiff/libtiff@6ba36f159fd396ad11bf6b7874554197736ecc8b",
        "digest": {
            "length": 1731.0,
            "function_hash": "91136219475530756959059131609403099597"
        },
        "signature_version": "v1",
        "target": {
            "function": "PSRawDataBW",
            "file": "tools/tiff2ps.c"
        },
        "id": "CVE-2025-8534-cdf2357a"
    }
]