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.
CVE-2017-1086
Score 3.3 from GitHub Security Advisory (severity: LOW) published 2022-05-17. NVD baseline CVSS 3.3; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.3
- EG Score
- 3.3(medium)
- EPSS
- 28.3%
- KEV
- Not listed
Published
November 16, 2017
Last Modified
May 13, 2026
References (6)
- secteam@freebsdhttp://www.securityfocus.com/bid/101861
- secteam@freebsdhttp://www.securitytracker.com/id/1039809
- secteam@freebsdhttps://www.freebsd.org/security/advisories/FreeBSD-SA-17:08.ptrace.asc
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/101861
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039809
- af854a3a-2127-422b-91ae-364da2661108https://www.freebsd.org/security/advisories/FreeBSD-SA-17:08.ptrace.asc
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| debian:10 | kfreebsd-10 | — | osv |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Data Freshness Timeline
(refreshed 11× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-05-22 07:59 UTCEG score recompute
- 2026-05-22 07:59 UTCGHSA enrichment
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Frequently asked(5)
What is CVE-2017-1086?
When was CVE-2017-1086 disclosed?
Is CVE-2017-1086 actively exploited?
What is the CVSS score of CVE-2017-1086?
How do I remediate CVE-2017-1086?
Dependency Blast Radius
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