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CVE-2026-58086

ktrace(2) privilege incorrectly validated in jails

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerFreeBSD
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Produkt FreeBSD
Default Statusunknown
Version 15.1-RELEASE
Version < p2
Status affected
Version 15.0-RELEASE
Version < p12
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.079
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CWE-273 Improper Check for Dropped Privileges

The product attempts to drop privileges but does not check or incorrectly checks to see if the drop succeeded.

https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.asc