CVE-2026-58089 — hwpmc fails to detach PMCs during exec credential transitions
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 scena…
Published: 2026-08-26 · CVSS: 7.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7