Bug 2506023 (CVE-2026-16524) - CVE-2026-16524 PCP: PCP linux_sockets PMDA: Arbitrary Command Execution via Command Injection
Summary: CVE-2026-16524 PCP: PCP linux_sockets PMDA: Arbitrary Command Execution via C...
Keywords:
Status: NEW
Alias: CVE-2026-16524
Deadline: 2026-07-30
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2511440
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-22 06:47 UTC by OSIDB Bzimport
Modified: 2026-10-01 22:52 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:55560 0 None None None 2026-08-17 10:32:46 UTC
Red Hat Product Errata RHSA-2026:55617 0 None None None 2026-08-17 19:46:29 UTC
Red Hat Product Errata RHSA-2026:55740 0 None None None 2026-08-17 19:41:05 UTC
Red Hat Product Errata RHSA-2026:72272 0 None None None 2026-09-28 04:58:14 UTC
Red Hat Product Errata RHSA-2026:72273 0 None None None 2026-09-28 04:02:32 UTC
Red Hat Product Errata RHSA-2026:72593 0 None None None 2026-09-28 15:14:42 UTC
Red Hat Product Errata RHSA-2026:72594 0 None None None 2026-09-28 15:13:20 UTC
Red Hat Product Errata RHSA-2026:73767 0 None None None 2026-09-30 07:56:26 UTC
Red Hat Product Errata RHSA-2026:74612 0 None None None 2026-10-01 22:52:29 UTC
Red Hat Product Errata RHSA-2026:74613 0 None None None 2026-10-01 22:45:48 UTC

Description OSIDB Bzimport 2026-07-22 06:47:30 UTC 
A command injection vulnerability exists in the linux_sockets PMDA through the
writable metric network.persocket.filter. The validation helper sockets_check_filter() returns
1 for safe input and 0 for unsafe input, but the store handler uses an inverted condition: safe
expressions are rejected while malicious ones containing shell metacharacters are silently
accepted. The attacker-controlled filter value is later incorporated into a shell command
executed via popen() whenever socket metrics are refreshed, enabling arbitrary command
execution as the PMDA process user.
Prerequisites:
• linux_sockets PMDA loaded;
• ss binary present (/usr/sbin/ss or /usr/bin/ss);
• no [access] section restricting pmstore in pmcd.conf (default behavior).
Comment 1 errata-xmlrpc 2026-08-17 10:32:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:55560 https://access.redhat.com/errata/RHSA-2026:55560
Comment 2 errata-xmlrpc 2026-08-17 19:41:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:55740 https://access.redhat.com/errata/RHSA-2026:55740
Comment 3 errata-xmlrpc 2026-08-17 19:46:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:55617 https://access.redhat.com/errata/RHSA-2026:55617
Comment 4 Jon Orris 2026-09-28 04:02:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:72273 https://access.redhat.com/errata/RHSA-2026:72273
Comment 5 Jon Orris 2026-09-28 04:58:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:72272 https://access.redhat.com/errata/RHSA-2026:72272
Comment 6 Jon Orris 2026-09-28 15:13:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:72594 https://access.redhat.com/errata/RHSA-2026:72594
Comment 7 Jon Orris 2026-09-28 15:14:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:72593 https://access.redhat.com/errata/RHSA-2026:72593
Comment 8 Jon Orris 2026-09-30 07:56:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:73767 https://access.redhat.com/errata/RHSA-2026:73767
Comment 10 Jon Orris 2026-10-01 22:45:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:74613 https://access.redhat.com/errata/RHSA-2026:74613
Comment 11 Jon Orris 2026-10-01 22:52:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:74612 https://access.redhat.com/errata/RHSA-2026:74612
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