SB2026052720 - Red Hat Enterprise Linux 8 update for .NET 8.0

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Main Vulnerability Database SB2026052720

SB2026052720 - Red Hat Enterprise Linux 8 update for .NET 8.0

Published: May 27, 2026

Security Bulletin ID SB2026052720
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2026-34043)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in the serialize() function when serializing a specially crafted array-like object. A remote attacker can supply a crafted array-like object to cause a denial of service.

Exploitation can cause 100% CPU usage and the process may hang indefinitely.


2) Infinite loop (CVE-ID: CVE-2026-42899)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in ASP.NET Core. A remote attacker can consume all available system resources and cause denial of service conditions.


Remediation

Install update from vendor's website.

References