CVE-2021-3520: Out-of-bounds Write

June 2, 2021 (updated November 7, 2023)

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

bugzilla.redhat.com/show_bug.cgi?id=1954559
nvd.nist.gov/vuln/detail/CVE-2021-3520

Code Behaviors & Features

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