CVE-2026-16526
CVE-2026-16526: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh8.8
High [CVE-2026-16526] Privilege escalation to root via linux_sockets PMDA vulnerability
CVE-2026-16526Source published Source updated
A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root. This is an Important privilege escalation vulnerability in PCP where an attacker can escalate privileges from the `pcp` user to `root`. This flaw requires a prior `linux_sockets` command injection vulnerability and a non-default configuration where the `linux_sockets` PMDA is loaded as a DSO in PMCD. Exploitation can occur locally or remotely depending on the `pmcd` and `pmproxy` configurations. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-403. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux 6
2 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- pcp-0:7.0.3-5.el10_2
- pcp-0:5.3.7-22.el8_10.5
- pcp-0:6.3.7-8.el9_8.4
- RHSA-2026:55617
2 more entries in the full advisory.
- Mitigation guidance
- To mitigate this vulnerability, ensure that the `linux_sockets` PMDA is not configured to load as a Dynamic Shared Object (DSO) within PMCD. The default configuration for this PMDA is daemon mode, which is not affected by this flaw. Review your `pmcd.conf` file to confirm the `linux_sockets` PMDA is not loaded as a DSO. If changes are made to `pmcd.conf`, a restart of the `pmcd` service is required for them to take effect.
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