# CVE-2022-49286: linux: In the Linux kernel, the following vulnerability has been resolved:  tpm: use try_get_ops() in tpm-space.c  As part o...

CVE-2022-49286 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49286, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49286
- Priority: Routine
- CVSS: 4.7 (medium)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  tpm: use try_get_ops() in tpm-space.c  As part of the series conversion to remove nested TPM operations:  https://lore.kernel.org/all/20190205224723.19671-1-jarkko.sakkinen@linux.intel.com/  exposure of the chip->tpm_mutex was removed from much of the upper level code.  In this conversion, tpm2_del_space() was missed.  This didn't matter much because it's usually called closely after a converted operation, so there's only a very tiny race window where the chip can be removed before the space flushing is done which causes a NULL deref on the mutex.  However, there are reports of this window being hit in practice, so fix this by converting tpm2_del_space() to use tpm_try_get_ops(), which performs all the teardown checks before acquring the mutex.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2022-49286](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49286.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2022-49286](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49286.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2022-49286](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49286.md) | Feb 26, 2025 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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