CVE-2026-58086
highAs an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user.
Vendor / product: Freebsd — freebsd
As an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user. Tracing configured by a jailed root user was therefore not flagged as privileged. An unprivileged user in a jail that has permission to debug the target process can modify the jailed root user's ktrace(2) flags, or disable tracing outright. A jailed root user therefore cannot reliably trace unprivileged processes.
CVSS
8.1
8.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Severity source: NVD CVSS v3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
Timeline (UTC)
Published: 2026-08-19 08:17
Modified: 2026-10-27 12:10
NVD status: Analyzed
Last synced 19 hours ago
Verified against the source API 2026-10-28 11:30 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
freebsd / freebsd 15.0, 15.1
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.asc
References
- https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.asc secteam@freebsd.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 11:30 UTC · record ↗