CVE-2023-53769
In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.
Affected versions
Linux kernel versions
5.19
and later are affected. Fixed in
6.1.28,
6.2.15,
6.3.2,
6.4
and their respective stable series.
References
The following references provide additional information about CVE-2023-53769 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/4b69c63f716cfda38e1210e65b68f67f6cee2ddf
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PatchKernel patch commithttps://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b
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PatchKernel patch commithttps://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad
Frequently asked questions
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What is CVE-2023-53769?
CVE-2023-53769 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.19 onward and has been patched in 6.1.28, 6.2.15, 6.3.2 and others. CVE-2023-53769 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-2023-53769?
Yes — CVE-2023-53769 has been patched. Fixed versions include 6.1.28, 6.2.15, 6.3.2 and others. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-53769 actively exploited?
No — CVE-2023-53769 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.