vulnerability
Arch Linux: Denial of service (CVE-2021-3520)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Jun 2, 2021 | Jul 11, 2025 | Mar 25, 2026 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Jun 2, 2021
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
A vulnerability was found in lz4, where a potential memory corruption due to an integer overflow bug caused one of the memmove arguments to become negative. Depending on how the library was compiled this will hit an assert() inside the library and dump core, leaving a 4GB core file, or it wil go into libc and crash inside the memmove() function.
Solution
arch-linux-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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