CVE-2026-45978
In the Linux kernel, the following vulnerability has been resolved: staging: greybus: lights: avoid NULL deref gb_lights_light_config() stores channel_count before allocating the channels array. If kcalloc() fails, gb_lights_release() iterates the non-zero count and dereferences light->channels, which is NULL. Allocate channels first and only then publish channels_count so the cleanup path can't walk a NULL pointer.
Affected versions
Linux kernel versions
4.9
and later are affected. Fixed in
5.10.252,
5.15.202,
6.1.165,
6.6.128,
6.12.75,
6.18.14,
6.19.4,
7.0
and their respective stable series.
References
The following references provide additional information about CVE-2026-45978 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/01b91cb3e748032fd96bbe0043812b426a52f091
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PatchKernel patch commithttps://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b
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PatchKernel patch commithttps://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699
Frequently asked questions
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What is CVE-2026-45978?
CVE-2026-45978 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.9 onward and has been patched in 5.10.252, 5.15.202, 6.1.165 and others. CVE-2026-45978 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-2026-45978?
Yes — CVE-2026-45978 has been patched. Fixed versions include 5.10.252, 5.15.202, 6.1.165 and others. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-45978 actively exploited?
No — CVE-2026-45978 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.