CVE-2023-54066
In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb-v2: gl861: Fix null-ptr-deref in gl861_i2c_master_xfer In gl861_i2c_master_xfer, msg is controlled by user. When msg[i].buf is null and msg[i].len is zero, former checks on msg[i].buf would be passed. Malicious data finally reach gl861_i2c_master_xfer. If accessing msg[i].buf[0] without sanity check, null ptr deref would happen. We add check on msg[i].len to prevent crash. Similar commit: commit 0ed554fd769a ("media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()")
Affected versions
Linux kernel versions
5.5
and later are affected. Fixed in
5.10.197,
5.15.133,
6.1.55,
6.5.5,
6.6
and their respective stable series.
References
The following references provide additional information about CVE-2023-54066 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/2a33fc57133d6f39d62285df6706aeb1714967f1
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PatchKernel patch commithttps://git.kernel.org/stable/c/578b67614ae0e4fba3945b66a4c8f9ae77115bcb
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PatchKernel patch commithttps://git.kernel.org/stable/c/72af676551efe820e309a6c7681c2c4372f37376
Frequently asked questions
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What is CVE-2023-54066?
CVE-2023-54066 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.5 onward and has been patched in 5.10.197, 5.15.133, 6.1.55 and others. CVE-2023-54066 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-2023-54066?
Yes — CVE-2023-54066 has been patched. Fixed versions include 5.10.197, 5.15.133, 6.1.55 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54066 actively exploited?
No — CVE-2023-54066 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.