CVE-2026-88265

NameCVE-2026-88265
DescriptionA flaw was found in crun. After pivot_root, reopening /dev/null for stdio can follow a symlink and attach a host file to container stdio, then change that file's ownership. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
crun (PTS)bookworm1.8.1-1+deb12u1vulnerable
trixie1.21-1vulnerable
forky, sid1.28-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
crunsource(unstable)(unfixed)

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=2531224

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