# CVE-2023-53565: linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: brcmfmac: Check for probe() id argument be...

CVE-2023-53565 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53565, released October 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53565
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0013
- 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: brcmfmac: Check for probe() id argument being NULL  The probe() id argument may be NULL in 2 scenarios:  1. brcmf_pcie_pm_leave_D3() calling brcmf_pcie_probe() to reprobe    the device.  2. If a user tries to manually bind the driver from sysfs then the sdio /    pcie / usb probe() function gets called with NULL as id argument.  1. Is being hit by users causing the following oops on resume and causing wifi to stop working:  BUG: kernel NULL pointer dereference, address: 0000000000000018 <snip> Hardware name: Dell Inc. XPS 13 9350/0PWNCR, BIDS 1.13.0 02/10/2020 Workgueue: events_unbound async_run_entry_fn RIP: 0010:brcmf_pcie_probe+Ox16b/0x7a0 [brcmfmac] <snip> Call Trace:  <TASK>  brcmf_pcie_pm_leave_D3+0xc5/8x1a0 [brcmfmac be3b4cefca451e190fa35be8f00db1bbec293887]  ? pci_pm_resume+0x5b/0xf0  ? pci_legacy_resume+0x80/0x80  dpm_run_callback+0x47/0x150  device_resume+0xa2/0x1f0  async_resume+0x1d/0x30 <snip>  Fix this by checking for id being NULL.  In the PCI and USB cases try a manual lookup of the id so that manually binding the driver through sysfs and more importantly brcmf_pcie_probe() on resume will work.  For the SDIO case there is no helper to do a manual sdio_device_id lookup, so just directly error out on a NULL id there.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-53565](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53565.md) | Oct 4, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-53565](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53565.md) | Oct 4, 2025 |

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Data as of 2026-11-08T06:59:42Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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