CVE-2022-48620
CWE-120Published: January 12, 2024· Updated: Jun 17, 2026
Official Description
uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.
Risk Analysis
A buffer overflow vulnerability exists in libuev when handling large values for maxevents in epoll_wait, which could lead to remote code execution. The 9.8 CVSS score marks this as a critical issue for systems using this library.
No public exploit is known, and it is not in the CISA KEV. The flaw is remotely exploitable with low complexity.
Upgrade libuev to version 2.4.1 or later. Ensure input bounds are checked before passing values to system functions.
Technical Analysis
CVE-2022-48620 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (16)
Quick Facts
Related CVEs (CWE-120)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-48620 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts