CVE-2025-40097
In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix missing pointer check in hda_component_manager_init function The __component_match_add function may assign the 'matchptr' pointer the value ERR_PTR(-ENOMEM), which will subsequently be dereferenced. The call stack leading to the error looks like this: hda_component_manager_init |-> component_match_add |-> component_match_add_release |-> __component_match_add ( ... ,**matchptr, ... ) |-> *matchptr = ERR_PTR(-ENOMEM); // assign |-> component_master_add_with_match( ... match) |-> component_match_realloc(match, match->num); // dereference Add IS_ERR() check to prevent the crash. Found by Linux Verification Center (linuxtesting.org) with SVACE.
Affected versions
Linux kernel versions
5.17
and later are affected. Fixed in
6.12.59,
6.17.5,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40097 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/1cf11d80db5df805b538c942269e05a65bcaf5bc
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PatchKernel patch commithttps://git.kernel.org/stable/c/218a8504e62fc2c8a1fd12523346b7a2b9bd2474
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PatchKernel patch commithttps://git.kernel.org/stable/c/47d1b9ca923b55c3f407788f1f15b04957e0e027
Frequently asked questions
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What is CVE-2025-40097?
CVE-2025-40097 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.17 onward and has been patched in 6.12.59, 6.17.5 and 6.18. CVE-2025-40097 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-2025-40097?
Yes — CVE-2025-40097 has been patched. Fixed versions include 6.12.59, 6.17.5 and 6.18. If you are running Linux kernel 5.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-40097 actively exploited?
No — CVE-2025-40097 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.