uev up to 2.4.0 epoll_wait maxevents buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in uev up to 2.4.0. This affects the function epoll_wait. Such manipulation of the argument maxevents leads to buffer overflow. This vulnerability is listed as CVE-2022-48620. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in uev up to 2.4.0 and classified as critical. Affected by this issue is the function epoll_wait. The manipulation of the argument maxevents with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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

The weakness was presented 01/12/2024 as 27. The advisory is available at github.com. This vulnerability is handled as CVE-2022-48620 since 01/12/2024. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 296554 (Debian dla-4454 : libuev-dev - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.4.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2d9f1c9ce655cc38511aeeb6e95ac30914f7aec9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (296554) and EUVD (EUVD-2022-51315). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 296554
Nessus Name: Debian dla-4454 : libuev-dev - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: uev 2.4.1
Patch: 2d9f1c9ce655cc38511aeeb6e95ac30914f7aec9

Timelineinfo

01/12/2024 🔍
01/12/2024 +0 days 🔍
01/12/2024 +0 days 🔍
01/26/2026 +745 days 🔍

Sourcesinfo

Advisory: 27
Status: Confirmed

CVE: CVE-2022-48620 (🔍)
GCVE (CVE): GCVE-0-2022-48620
GCVE (VulDB): GCVE-100-250538
EUVD: 🔍

Entryinfo

Created: 01/12/2024 07:46
Updated: 01/26/2026 07:44
Changes: 01/12/2024 07:46 (43), 02/02/2024 07:17 (11), 01/25/2026 21:24 (17), 01/26/2026 02:07 (1), 01/26/2026 07:44 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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