There’s a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.

CNA Affected

[
  {
    "product": "lz4",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "lz4-1.8.3"
      }
    ]
  }
]