CVE-2026-45978
Published May 27, 2026
Modified May 27, 2026
Description
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.
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EPSS — Exploit Prediction
0.0012
Probability of exploitation
0.02%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/01b91cb3e748032fd96bbe0043812b426a52f091
https://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b
https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699
https://git.kernel.org/stable/c/65f2c608096d766540953d9b170d216aa3b5eb95
https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552
https://git.kernel.org/stable/c/ba5022162da63059bae36c4fd84d7031f582c71f
https://git.kernel.org/stable/c/da46264a7016034a5bbbad034c012ef218b7d0af
https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7
Frequently Asked Questions
What is 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.
How do I check if I'm vulnerable to CVE-2026-45978? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.