CVE-2021-3520
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-3520
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3520.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3520
- Downstream
- Related
- Published
- 2021-06-02T13:15:13Z
- Modified
- 2025-10-21T06:25:18.738955Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References