CVE-2017-1086

LowCVSS 3.3/10Last modified Jun 17, 2026

Description

In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p4, 11.0-RELEASE-p15, 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24, not all information in the struct ptrace_lwpinfo is relevant for the state of any thread, and the kernel does not fill the irrelevant bytes or short strings. Since the structure filled by the kernel is allocated on the kernel stack and copied to userspace, a leak of information of the kernel stack of the thread is possible from the debugger. As a result, some bytes from the kernel stack of the thread using ptrace (PT_LWPINFO) call can be observed in userspace.

Metrics

CVSS 3.0 3.3/10CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Nov 16, 2017
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2017-1086: Low severity, CVSS 3.3 | Vulnix