SB2026080525 - Multiple vulnerabilities in IBM PowerVC

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Main Vulnerability Database SB2026080525

SB2026080525 - Multiple vulnerabilities in IBM PowerVC

Published: August 5, 2026

Security Bulletin ID SB2026080525
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) Integer overflow (CVE-ID: CVE-2026-42308)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to integer overflow in font processing when handling fonts with excessively large glyph advance values. A remote attacker can supply a specially crafted font to cause a denial of service.


2) Infinite loop (CVE-ID: CVE-2026-42310)

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

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


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

The vulnerability exists due to an infinite loop in PdfParser when parsing a malicious PDF trailer with cyclic Prev pointers. A remote attacker can supply a specially crafted PDF file to cause a denial of service.

The issue can cause the process to hang indefinitely, consume 100% CPU, and make the application unresponsive.


Remediation

Install update from vendor's website.

References