CVE-2025-15547— Jail escape by a privileged user via nullfs
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2025-15547
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Jail escape by a privileged user via nullfs
Source: NVD (National Vulnerability Database)
Vulnerability Description
By default, jailed processes cannot mount filesystems, including nullfs(4). However, the allow.mount.nullfs option enables mounting nullfs filesystems, subject to privilege checks. If a privileged user within a jail is able to nullfs-mount directories, a limitation of the kernel's path lookup logic allows that user to escape the jail's chroot, yielding access to the full filesystem of the host or parent jail. In a jail configured to allow nullfs(4) mounts from within the jail, the jailed root user can escape the jail's filesystem root.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
FreeBSD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞，该漏洞源于内核路径查找逻辑存在限制，可能导致配置了allow.mount.nullfs选项的jail中的特权用户逃逸jail的chroot。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-15547
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2025-15547
请登录查看更多情报信息。
Same Patch Batch · FreeBSD · 2026-03-09 · 6 CVEs total
| CVE-2026-3038 | Local DoS and possible privilege escalation via routing sockets | |
| CVE-2026-2261 | blocklistd(8) socket leak | |
| CVE-2025-15576 | Jail chroot escape via fd exchange with a different jail | |
| CVE-2025-14558 | Remote code execution via ND6 Router Advertisements | |
| CVE-2025-14769 | ipfw denial of service |
IV. Related Vulnerabilities
Same product: FreeBSD
Same vendor: FreeBSD
Same weakness: CWE-269
- CVE-2026-42562
Plainpad: Privilege Escalation via Writable Admin Field in P - CVE-2026-41163
bubblewrap vulnerable to privilege escalation in setuid mode - CVE-2026-44987
SysReptor: Privilege Escalation from User Admin to Superuser - CVE-2026-42185
People: Privilege Escalation via Missing Role Ceiling in Mai - CVE-2026-40001
Local privilege escalation vulnerability in ZTE PROCESS Guar
V. Comments for CVE-2025-15547
No comments yet