# CVE-2023-53589: linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: iwlwifi: mvm: don't trust firmware n_chann...

CVE-2023-53589 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53589, released October 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53589
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 4, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  wifi: iwlwifi: mvm: don't trust firmware n_channels  If the firmware sends us a corrupted MCC response with n_channels much larger than the command response can be, we might copy far too much (uninitialized) memory and even crash if the n_channels is large enough to make it run out of the one page allocated for the FW response.  Fix that by checking the lengths. Doing a < comparison would be sufficient, but the firmware should be doing it correctly, so check more strictly.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-53589](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53589.md) | Oct 4, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-53589](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53589.md) | Oct 4, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-53589](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53589.md) | Oct 4, 2025 |

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