CVE-2026-84042
HIGH
MEDIUM
Priority: 0.01
BB Relevance:
31/100
Published: 2026-09-10
Modified: 2026-11-11
First seen: 2026-11-05
Status: active
Attack Surface
No Interaction
Conf. Impact
Integ. Impact
Scope Change
CVSS Vector Breakdown
AV:
Local
AC:
High
PR:
Low
UI:
None
S:
Changed
C:
High
I:
High
A:
High
Description
A flaw was found in crun. When crun is built with libkrun and a container is started rootful with passt networking (krun.use_passt), crun can execute attacker-controlled payload from the container image with host root privileges. The issue is a regression in crun 1.29. It affects crun >= 1.29
Weakness Classification (1)
References & Advisories (5)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT