7.5 High

CVE-2026-16529 Pcp: pcp: denial of service due to signed integer overflow

Description

A signed integer overflow in the PCP __pmGetPDU() function can be exploited via crafted network packets during PDU processing or SASL negotiation. This permanently blinds the affected daemon, resulting in a total denial of service (DoS) for subsequent packet reads.

CVSS 3.1 detail

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Network
Attack complexity: Low
Privileges required: None
Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Affected products and versions

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 10	Versions not published
Red Hat Enterprise Linux 6	Versions not published
Red Hat Enterprise Linux 7	Versions not published
Red Hat Enterprise Linux 8	Versions not published
Red Hat Enterprise Linux 9	Versions not published
Red Hat OpenShift Container Platform 4	Versions not published
Red Hat Enterprise Linux 10.0 Extended Update Support	Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support	Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Versions not published

Show the 8 other branches

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions	Versions not published
Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Versions not published
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Versions not published
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Versions not published
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Versions not published
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Versions not published
Red Hat OpenShift Container Platform 5	Versions not published

References

RHSA-2026:55560 access.redhat.com
RHSA-2026:55617 access.redhat.com
RHSA-2026:55740 access.redhat.com
RHSA-2026:72272 access.redhat.com
RHSA-2026:72273 access.redhat.com
RHSA-2026:72593 access.redhat.com
RHSA-2026:72594 access.redhat.com
RHSA-2026:73767 access.redhat.com
RHSA-2026:74612 access.redhat.com
RHSA-2026:74613 access.redhat.com
access.redhat.com access.redhat.com
RHBZ#2506032 bugzilla.redhat.com

Timeline

Published July 30, 2026
Last modified November 4, 2026

The 1455 CVEs of Red Hat Enterprise Linux 10 →

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