CVE-2023-54034
In the Linux kernel, the following vulnerability has been resolved: iommufd: Make sure to zero vfio_iommu_type1_info before copying to user Missed a zero initialization here. Most of the struct is filled with a copy_from_user(), however minsz for that copy is smaller than the actual struct by 8 bytes, thus we don't fill the padding.
Affected versions
Linux kernel versions
6.2
and later are affected. Fixed in
6.2.3,
6.3
and their respective stable series.
References
The following references provide additional information about CVE-2023-54034 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/7adcec686e4d699c169d34c722132b2bce5232cb
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PatchKernel patch commithttps://git.kernel.org/stable/c/b3551ead616318ea155558cdbe7e91495b8d9b33
Frequently asked questions
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What is CVE-2023-54034?
CVE-2023-54034 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.2 onward and has been patched in 6.2.3 and 6.3. CVE-2023-54034 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-2023-54034?
Yes — CVE-2023-54034 has been patched. Fixed versions include 6.2.3 and 6.3. If you are running Linux kernel 6.2 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-54034 actively exploited?
No — CVE-2023-54034 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.