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.
                
            Metrics
Affected Vendors & Products
Advisories
    | Source | ID | Title | 
|---|---|---|
  Debian DLA | 
                DLA-2657-1 | lz4 security update | 
  Debian DSA | 
                DSA-4919-1 | lz4 security update | 
  Ubuntu USN | 
                USN-4968-1 | LZ4 vulnerability | 
  Ubuntu USN | 
                USN-4968-2 | LZ4 vulnerability | 
Fixes
    Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
        History
                    No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-03T17:01:07.870Z
Reserved: 2021-04-28T00:00:00
Link: CVE-2021-3520
No data.
Status : Modified
Published: 2021-06-02T13:15:13.170
Modified: 2024-11-21T06:21:44.987
Link: CVE-2021-3520
                        OpenCVE Enrichment
                    No data.
 Debian DLA
 Debian DSA
 Ubuntu USN