OSV-2026-805 Heap-buffer-overflow in ihevcd_fmt_conv
Not scored
Published
Check this codebase for OSV-2026-805 and fix it if it is affected.
What it is: OSV-2026-805 is a memory corruption vulnerability in libhevc, published on 24 May 2026.
Exploitation: There is no known exploitation of OSV-2026-805 in the wild and no public exploit code.
Affected packages and fixed versions:
- libhevc (OSS-Fuzz): affected all versions; no fix listed
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/OSV-2026-805/ (Markdown: https://insights.sbomify.com/OSV-2026-805/index.md)
A heap buffer overflow in the HEVC decoder allows attackers to execute arbitrary code or cause denial of service via crafted media files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2026-805?
OSV-2026-805 is a memory corruption vulnerability in libhevc, published on 24 May 2026.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=515832483
Crash type: Heap-buffer-overflow WRITE 1
Crash state:
ihevcd_fmt_conv
ihevcd_decode
ihevcd_cxa_api_function
Which versions are affected by OSV-2026-805?
1 open source package ship an affected version, including libhevc.
| Package | Affected | Fixed in |
|---|---|---|
libhevc OSS-Fuzz | All versions | None |
How do I fix OSV-2026-805?
No fix has been published for OSV-2026-805 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2026-805 being exploited?
There is no known exploitation of OSV-2026-805 in the wild and no public exploit code.