CVE-2019-17543

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Source
https://cve.org/CVERecord?id=CVE-2019-17543
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-17543.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-17543
Downstream
Related
Published
2019-10-14T02:15:10Z
Modified
2026-07-08T17:17:38Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."

References

Affected packages

Git / github.com/lz4/lz4

Affected ranges

Type
GIT
Repo
https://github.com/lz4/lz4
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fdf2ef5809ca875c454510610764d9125ef2ebbd
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:lz4_project:lz4:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.9.2"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

Other
r117
r118
r119
r120
r121
r122
r123
r124
r125
r126
r127
r128
r129
rc129v0
v1.*
v1.7.3
v1.7.4
v1.8.1.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-17543.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "61011784323741544421519885770648292192",
            "length": 6841
        },
        "id": "CVE-2019-17543-b1728100",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/lz4/lz4/commit/fdf2ef5809ca875c454510610764d9125ef2ebbd",
        "target": {
            "file": "tests/frametest.c",
            "function": "fuzzerTests"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "325100058228336016223022397709697290259",
                "200105775490831143229869207908691188226",
                "165779088698909068794914726885539428532",
                "83614538809166404914961511938413066878"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2019-17543-f2e73d94",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/lz4/lz4/commit/fdf2ef5809ca875c454510610764d9125ef2ebbd",
        "target": {
            "file": "tests/frametest.c"
        }
    }
]
vanir_signatures_modified 
"2026-07-08T17:17:38Z"