CVE-2026-35368
A vulnerability exists in the chroot utility of uutils coreutils when using the --userspec option.
Published Apr 22, 2026 · updated Jun 17, 2026 · uutils coreutils
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.
Code
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No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Apr 22, 2026 · NIST NVD
Detected
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
Jun 17, 2026 · NIST NVD
Updated
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
Affected
- cpe uutils/coreutilsversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-35368
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-35368
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 S
nvd.nist.gov