CVE-2023-53715
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 versions
Linux kernel versions
4.13
and later are affected. Fixed in
4.14.316,
4.19.284,
5.4.244,
5.10.181,
5.15.113,
6.1.30,
6.3.4,
6.4
and their respective stable series.
References
The following references provide additional information about CVE-2023-53715 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/1687845eb8f37360a9ee849a3587ab659b090773
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PatchKernel patch commithttps://git.kernel.org/stable/c/2bc34facb90ceeff6f8c17d2006575a6d07c3825
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PatchKernel patch commithttps://git.kernel.org/stable/c/2fa3a5226b05e0a797c68b9609dcebe0cd236b27
Frequently asked questions
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What is CVE-2023-53715?
CVE-2023-53715 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.13 onward and has been patched in 4.14.316, 4.19.284, 5.4.244 and others. CVE-2023-53715 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-53715?
Yes — CVE-2023-53715 has been patched. Fixed versions include 4.14.316, 4.19.284, 5.4.244 and others. If you are running Linux kernel 4.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-53715 actively exploited?
No — CVE-2023-53715 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.