CVE-2025-40177
In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Fix bootlog initialization ordering As soon as we queue MHI buffers to receive the bootlog from the device, we could be receiving data. Therefore all the resources needed to process that data need to be setup prior to queuing the buffers. We currently initialize some of the resources after queuing the buffers which creates a race between the probe() and any data that comes back from the device. If the uninitialized resources are accessed, we could see page faults. Fix the init ordering to close the race.
Affected versions
Linux kernel versions
6.10
and later are affected. Fixed in
6.12.55,
6.17.5,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40177 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/48814afc7372f96a9584125c8508dffc88d1d378
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PatchKernel patch commithttps://git.kernel.org/stable/c/646868e6962b14e25ae7462fdd1fb061b40c1f16
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PatchKernel patch commithttps://git.kernel.org/stable/c/fd6e385528d8f85993b7bfc6430576136bb14c65
Frequently asked questions
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What is CVE-2025-40177?
CVE-2025-40177 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.10 onward and has been patched in 6.12.55, 6.17.5 and 6.18. CVE-2025-40177 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-2025-40177?
Yes — CVE-2025-40177 has been patched. Fixed versions include 6.12.55, 6.17.5 and 6.18. If you are running Linux kernel 6.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40177 actively exploited?
No — CVE-2025-40177 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.