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CVE-2023-53715

wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex

N/A
Published: October 22, 2025 at 01:23 PM UTC
Updated: October 28, 2026 at 07:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex Apparently the hex passphrase mechanism does not work on newer chips/firmware (e.g. BCM4387). It seems there was a simple way of passing it in binary all along, so use that and avoid the hexification. OpenBSD has been doing it like this from the beginning, so this should work on all chips. Also clear the structure before setting the PMK. This was leaking uninitialized stack contents to the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
4.13b8a64f0e96c2b258321ee03975aeb0f5e88a055b
Vendor states this is fixed in 1687845eb8f37360a9ee849a3587ab659b090773 (fixed)
Vendor states this is fixed in 2bc34facb90ceeff6f8c17d2006575a6d07c3825 (fixed)
Vendor states this is fixed in 2fa3a5226b05e0a797c68b9609dcebe0cd236b27 (fixed)
Vendor states this is fixed in 4e8dc0e5c7636efaadbd7e488acd34b4291c0431 (fixed)
Vendor states this is fixed in 56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02 (fixed)
Vendor states this is fixed in 89b89e52153fda2733562776c7c9d9d3ebf8dd6d (fixed)
Vendor states this is fixed in e242c66f7ecfe8f5b6eb308f4ea464fd8589c866 (fixed)
Vendor states this is fixed in f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e (fixed)
Vendor states this is fixed in 4.13 (unaffected)
Vendor states this is fixed in 4.14.316 (unaffected)
Vendor states this is fixed in 4.19.284 (unaffected)
Vendor states this is fixed in 5.10.181 (unaffected)
Vendor states this is fixed in 5.15.113 (unaffected)
Vendor states this is fixed in 5.4.244 (unaffected)
Vendor states this is fixed in 6.1.30 (unaffected)
Vendor states this is fixed in 6.3.4 (unaffected)
Vendor states this is fixed in 6.4 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/1687845eb8f37360a9ee849a3587ab659b090773
Source: cverecord
https://git.kernel.org/stable/c/2bc34facb90ceeff6f8c17d2006575a6d07c3825
Source: cverecord
https://git.kernel.org/stable/c/56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02
Source: cverecord
https://git.kernel.org/stable/c/4e8dc0e5c7636efaadbd7e488acd34b4291c0431
Source: cverecord
https://git.kernel.org/stable/c/e242c66f7ecfe8f5b6eb308f4ea464fd8589c866
Source: cverecord
https://git.kernel.org/stable/c/f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e
Source: cverecord
https://git.kernel.org/stable/c/2fa3a5226b05e0a797c68b9609dcebe0cd236b27
Source: cverecord
https://git.kernel.org/stable/c/89b89e52153fda2733562776c7c9d9d3ebf8dd6d

Quick Info

StatusDEFERRED

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