Integer Overflow Vulnerability in PCP Daemon by Red Hat
CVE-2026-16529

7.5HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
30 July 2026

What is CVE-2026-16529?

A vulnerability exists in the PCP daemon due to a signed integer overflow in the __pmGetPDU() function. This can be exploited by attackers through specially crafted network packets during the processing of Protocol Data Units (PDU) or during SASL negotiation. Successful exploitation can permanently blind the affected PCP daemon, leading to denial of service (DoS) as it becomes unable to handle subsequent packet reads effectively.

References

https://access.redhat.com/security/cve/CVE-2026-16529
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2506032
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Francisco Alisson Bezerra (TIM Security Red Team Research, TIM S.p.A), Lucas Gabriel Alves (TIM Security Red Team Research, TIM S.p.A), and Massimiliano Brolli (TIM Security Red Team Research, TIM S.p.A) for reporting this issue.
.