CVE catalog
CVE-2026-84042
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 ima
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.10% · Oct 25, 2026
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
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | crun | sid | 1.28-1 | not affected |
| Debian | crun | forky | 1.28-1 | not affected |
| Debian | crun | trixie | 1.21-1 | not affected |
| Debian | crun | bookworm | 1.8.1-1+deb12u1 | not affected |
| Opensuse | crun | tumbleweed | 1.30.1-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | crun | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | crun | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | crun | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | crun | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Opensuse | crun | rpm | tumbleweed | 1.30.1-1.1 | Not reported | OPENSUSE-SU-2026:12162-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [crun]Affected
Source package: [crun]
Details (1)
1.28-2.2· x86_64 · tumbleweedAffected · Fixed:
1.30.1-1.1nvd · crun · opensuse · tumbleweed
- [crun-krun]Unknown
Source package: [crun]
Details (1)
1.28-2.2· x86_64 · tumbleweedUnknown · Fixed:
1.30.1-1.1Version impact unknown
nvd · crun · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [crun]Not affected
Details (2)
1.8.1-1+deb12u1· amd64 · bookwormNot affected
nvd · crun · debian · bookworm
1.8.1-1+deb12u1· arm64 · bookwormNot affected
nvd · crun · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12162-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-84042]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:12162-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-84042]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84042.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]