# CVE-2026-47308: Samsung Walrus NULL pointer dereference

Source: https://junglewise.ai/threats/cve-2026-47308-samsung-walrus-null-pointer-dereference  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-19. Updated: 2026-05-19  
License: CC BY 4.0 with a link back

CVE-2026-47308 · Severity: medium · CVSS 5.5 · Published 2026-05-19

Samsung Walrus, an open-source library, is affected by a software flaw that can lead to application crashes. If an attacker provides a specially crafted input, they can trigger a memory error that forces the program to stop responding. This primarily impacts the reliability and availability of services using the library, though it does not directly lead to data theft.

Technologies: [Samsung Walrus](https://junglewise.ai/threats/technologies/walrus). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-47308 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-47308 being exploited in the wild.

**How severe is CVE-2026-47308?** Medium severity, with a CVSS score of 5.5, published 19 May 2026.

**Which products and versions are affected?** Samsung Walrus f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9.

**Is there a fix for CVE-2026-47308?** A patch was published on 2026-04-28: Fix merged in GitHub pull request 409 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-47308 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-47308?** Check whether you run Samsung Walrus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A NULL pointer dereference (CWE-476) exists in Samsung Open Source Walrus at commit f339b8e. The vulnerability is triggered when the software attempts to read or write to a memory address that is expected to be valid but is actually NULL, leading to a crash. An attacker can exploit this via local access by providing malicious input that requires user interaction (UI:R). This results in a high impact on availability but does not affect confidentiality or integrity. A fix was introduced in pull request #409 to improve error throwing and resource limit handling.

## Affected products

- Samsung Walrus f339b8ee4ea701772e8ae640b3d1b12ac02b1ae9

## Timeline

- 2026-04-28: patched: Fix merged in GitHub pull request 409
- 2026-05-19: disclosed: CVE published by Samsung TV & Appliance

## References

- [https://github.com/Samsung/walrus/pull/409](https://github.com/Samsung/walrus/pull/409)

## Related threats

- [Samsung Walrus integer overflow in memory bounds check](https://junglewise.ai/threats/cve-2026-86314-samsung-walrus-integer-overflow-in-memory-bounds-check)
- [Samsung Walrus out-of-bounds write buffer overflow](https://junglewise.ai/threats/cve-2026-86313-samsung-walrus-out-of-bounds-write-buffer-overflow)
- [Samsung Walrus NULL pointer dereference in WebAssembly engine](https://junglewise.ai/threats/cve-2026-47307-samsung-walrus-null-pointer-dereference-in-webassembly-engine)