CVE-2022-48620

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

9.8 CriticalFix available

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.32%Up 1.3 points since Jan 17, 2024

What each source reports

NVD Score used 9.8

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: CVE-2022-48620
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

CVE List 9.8

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: CVE-2022-48620
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

EUVDEUVD-2022-51315 9.8

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: EUVD-2022-51315
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-hjg8-pr7m-gj33 9.8

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: GHSA-hjg8-pr7m-gj33
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSV 9.8

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: CVE-2022-48620
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-48620 9.8

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: UBUNTU-CVE-2022-48620
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-48620 No score

uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number.

Record: DEBIAN-CVE-2022-48620
Updated: 2026-11-03

OSVopenSUSE-SU-2024:0023-1 No score

Security update for libuev

This update for libuev fixes the following issues:

Update to 2.4.1:
- Update README with list of moden Linux APIs used
- Fix #27: possible buffer overrun in uev_run() boo#1218749 CVE-2022-48620

Record: openSUSE-SU-2024:0023-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:13578-1 No score

libuev-devel-2.4.1-2.1 on GA media

These are all security issues fixed in the libuev-devel-2.4.1-2.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:13578-1
Updated: 2026-11-02

Affected products

troglobit libeuv

Affected packages

Affected packages
Package	Affected	Fixed
`libuev` Debian:12	before 2.4.0-1.1+deb12u1, plus listed versions 2.4.0-1.1	2.4.0-1.1+deb12u1
`libuev` Debian:13	before 2.4.1-1	2.4.1-1
`libuev` Debian:14	before 2.4.1-1	2.4.1-1
`libuev` Debian:11	before 2.3.1-1+deb11u1, plus listed versions 2.3.1-1	2.3.1-1+deb11u1
`libuev` Ubuntu:22.04:LTS	All versions, plus listed versions 2.3.1-1ubuntu22.4.0-1.1	None known
`libuev` Ubuntu:24.04:LTS	All versions, plus listed versions 2.4.0-1.12.4.0-1.22.4.1-12.4.1-1build1	None known
`libuev` Ubuntu:25.10	All versions, plus listed versions 2.4.1-1build1	None known
`libuev` Ubuntu:26.10	All versions, plus listed versions 2.4.1-1build2	None known
`libuev` Ubuntu:26.04:LTS	All versions, plus listed versions 2.4.1-1build12.4.1-1build2	None known
`libuev` SUSE:Package Hub 15 SP5	before 2.4.1-bp155.3.3.1	2.4.1-bp155.3.3.1
`libuev` openSUSE:Leap 15.5	before 2.4.1-bp155.3.3.1	2.4.1-bp155.3.3.1

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-48620 is a critical vulnerability (CVSS 9.8) in Troglobit Libeuv, published January 12, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.32%, the 71st percentile. Fixed in libuev 2.4.0-1.1+deb12u1.

References

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