【低危】uu_mknod 安全更新（GHSA-r9hw-mj3w-phcq）

安全情报快照 · 风险级别：低危 · CVSS：3.4 · CVE-2026-35361 · GHSA-r9hw-mj3w-phcq

先看结论

uu_mknod存在安全风险，< 0.6.0 受影响，建议升级至 0.6.0。

影响范围

生态	组件	受影响版本	首个修复版本
rust	`uu_mknod`	< 0.6.0	0.6.0

处置建议

优先将 uu_mknod 升级至 0.6.0 或更高版本；升级前请结合业务依赖完成兼容性验证。

上游技术详情（原文）

uutils calls mknod before setting the SELinux context (GNU uses setfscreatecon first, labeling atomically). If set_selinux_security_context fails, cleanup uses std::fs::remove_dir, which cannot remove device nodes or FIFOs, leaving the mislabeled node behind.

Impact: on SELinux-enforcing systems the node is created with the wrong context; the command reports failure but leaves a mislabeled device node that may bypass mandatory access control, and orphaned nodes can persist across reboots. Recommendation: use setfscreatecon before mknod, abort on failure, and use remove_file for cleanup.

Remediation: Acknowledged by Canonical.

Reported by Zellic in the uutils coreutils Program Security Assessment (prepared for Canonical, Jan 20 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242. Finding 3.58. Credit: Zellic.

来源与许可

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