CVE Catalog

CVE-2026-58089

HighCVSS 7.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.15%

5th percentile - higher than 5% of all known CVEs

Summary

When a process calls execve(2) to execute a setuid or setgid image, hwpmc(4) is supposed to detach PMCs owned by unprivileged processes. An inverted check meant that this scenario was not handled properly. An unprivileged local user who has attached PMCs to a process can continue monitoring it after the process executes a setuid or setgid binary, contrary to the intended policy.

Risk Assessment

Risk of security policy violation by monitoring setuid/setgid processes by unprivileged users, potentially leading to leakage of sensitive information.

Recommendation

Install the system patch that fixes the inverted check in hwpmc(4) and ensures proper detachment of PMCs on execve.

Related vulnerabilities

Original NVD description (English source)

When a process calls execve(2) to execute a setuid or setgid image, hwpmc(4) is supposed to detach PMCs owned by unprivileged processes. An inverted check meant that this scenario was not handled properly. An unprivileged local user who has attached PMCs to a process can continue monitoring it after the process executes a setuid or setgid binary, contrary to the intended policy.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS