CVE-2026-35368 | THREATINT

Description

A vulnerability exists in the chroot utility of uutils coreutils when using the --userspec option. The utility resolves the user specification via getpwnam() after entering the chroot but before dropping root privileges. On glibc-based systems, this can trigger the Name Service Switch (NSS) to load shared libraries (e.g., libnss_*.so.2) from the new root directory. If the NEWROOT is writable by an attacker, they can inject a malicious NSS module to execute arbitrary code as root, facilitating a full container escape or privilege escalation.

PUBLISHED Reserved 2026-04-02 | Published 2026-04-22 | Updated 2026-04-25 | Assigner canonical

HIGH: 7.2CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-426: Untrusted Search Path

Product status

Default status

affected

Credits

Zellic finder

References

github.com/uutils/coreutils/issues/10327 exploit

github.com/uutils/coreutils/issues/10327 issue-tracking

cve.org (CVE-2026-35368)

nvd.nist.gov (CVE-2026-35368)

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