Riskcovery

CVE-2023-53715

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

State
Published
Severity
Not scored
Published
Oct 22, 2025
Updated
May 11, 2026
Reserved
Oct 22, 2025

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before 1687845eb8f37360a9ee849a3587ab659b090773Affected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before 2bc34facb90ceeff6f8c17d2006575a6d07c3825Affected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before 56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02Affected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before 4e8dc0e5c7636efaadbd7e488acd34b4291c0431Affected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before e242c66f7ecfe8f5b6eb308f4ea464fd8589c866Affected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before f8a6c53ff1d91acd5a20eb627edbffd816eb9a4eAffected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before 2fa3a5226b05e0a797c68b9609dcebe0cd236b27Affected
  • b8a64f0e96c2b258321ee03975aeb0f5e88a055b to before 89b89e52153fda2733562776c7c9d9d3ebf8dd6dAffected
LinuxLinux
  • 4.13Affected
  • before 4.13Not affected
  • 4.14.316 through 4.14.*Not affected
  • 4.19.284 through 4.19.*Not affected
  • 5.4.244 through 5.4.*Not affected
  • 5.10.181 through 5.10.*Not affected
  • 5.15.113 through 5.15.*Not affected
  • 6.1.30 through 6.1.*Not affected
  • 6.3.4 through 6.3.*Not affected
  • 6.4 and laterNot affected

References

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