CVE-2026-45253
Missing validation in ptrace(PT_SC_REMOTE)
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls. As a result, a user with the ability to debug a process may trigger arbitrary code execution in the kernel, even if the target process has no special privileges. The missing validation allows an unprivileged local user to escalate privileges, potentially gaining full control of the affected system.
| CWE | CWE-787 |
| Vendor | freebsd |
| Product | freebsd |
| Published | May 21, 2026 |
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Affected Versions
FreeBSD / FreeBSD
15.0-RELEASE < p9 14.4-RELEASE < p5 14.3-RELEASE < p14
References
Credits
Yuxiang Yang, Yizhou Zhao, Ao Wang, Xuewei Feng, Qi Li, and Ke Xu from Tsinghua University using GLM-5.1 from Z.ai Ryan at Calif.io