CVE-2016-1885
CVE-2016-1885 is a medium-severity vulnerability in Freebsd with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Medium (CVSS 3.x base score 6.2)
- CVSS v2: 4.9
- EPSS exploit prediction: 1% (66th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Freebsd
- Published:
- Last modified:
Description
Integer signedness error in the amd64_set_ldt function in sys/amd64/amd64/sys_machdep.c in FreeBSD 9.3 before p39, 10.1 before p31, and 10.2 before p14 allows local users to cause a denial of service (kernel panic) via an i386_set_ldt system call, which triggers a heap-based buffer overflow.
Frequently asked questions
- What is CVE-2016-1885?
- Integer signedness error in the amd64_set_ldt function in sys/amd64/amd64/sys_machdep.c in FreeBSD 9.3 before p39, 10.1 before p31, and 10.2 before p14 allows local users to cause a denial of service (kernel panic) via an i386_set_ldt system call, which triggers a heap-based buffer overflow.
- How severe is CVE-2016-1885?
- CVE-2016-1885 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2016-1885 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-1885?
- CVE-2016-1885 primarily affects Freebsd. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2016-1885?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2016-1885 published?
- CVE-2016-1885 was published on 2016-04-12 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/136276/FreeBSD-Kernel-amd64_set_ldt-Heap-Overflow.html
- http://seclists.org/fulldisclosure/2016/Mar/56
- http://seclists.org/fulldisclosure/2016/Mar/67
- http://www.coresecurity.com/advisories/freebsd-kernel-amd64setldt-heap-overflow
- http://www.securityfocus.com/archive/1/537812/100/0/threaded
- http://www.securityfocus.com/archive/1/537813/100/0/threaded
- http://www.securitytracker.com/id/1035309
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:15.sysarch.asc
- https://www.exploit-db.com/exploits/39570/
Affected products (3)
- cpe:2.3:o:freebsd:freebsd:9.3:*:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:10.1:*:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:10.2:*:*:*:*:*:*:*
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