CVE-2023-53715
wifi: brcmfmac: cfg80211: Pass the PMK in binary instead of hex
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.13
References 8
git.kernel.org
- stable/c/1687845eb8f37360a9ee849a3587ab659b090773
- stable/c/2bc34facb90ceeff6f8c17d2006575a6d07c3825
- stable/c/56c7e9c39bd54fd753c0c4b1ed10278cbd3a5f02
- stable/c/4e8dc0e5c7636efaadbd7e488acd34b4291c0431
- stable/c/e242c66f7ecfe8f5b6eb308f4ea464fd8589c866
- stable/c/f8a6c53ff1d91acd5a20eb627edbffd816eb9a4e
- stable/c/2fa3a5226b05e0a797c68b9609dcebe0cd236b27
- stable/c/89b89e52153fda2733562776c7c9d9d3ebf8dd6d