CVE-2025-40172
HighIn the Linux kernel, the following vulnerability has been resolved: accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages() Currently, if find_and_map_user_pages() takes a DMA xfer request from the user with a length field set to 0, or in a rare case, the host receives QAIC_TRANS_DMA_XFER_CONT from the device where resources->xferred_dma_size is equal to the requested transaction size, the function will return 0 before allocating an sgt or setting the fields of the dma_xfer struct. In that case, encode_addr_size_pairs() will try to access the sgt which will lead to a general protection fault. Return an EINVAL in case the user provides a zero-sized ALP, or the device requests continuation after all of the bytes have been transferred.
CVSS 3.1 score
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected versions
Linux kernel versions
6.4.12,
6.5
and later are affected. Fixed in
6.6.114,
6.12.55,
6.17.5,
6.18
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2025-40172?
CVE-2025-40172 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.4.12 onward and has been patched in 6.6.114, 6.12.55, 6.17.5 and others. CVE-2025-40172 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2025-40172?
CVE-2025-40172 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. -
Is there a patch available for CVE-2025-40172?
Yes. CVE-2025-40172 has been patched. Fixed versions include 6.6.114, 6.12.55, 6.17.5 and others. If you are running Linux kernel 6.4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40172 actively exploited?
No. CVE-2025-40172 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.