What’s Vulnerable › Vulnerabilities

CVE-2026-45978: staging: greybus: lights: avoid NULL deref

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Linux kernel: from 4.9 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14 — fixed in 5.10.252, 5.15.202, 6.1.165, 6.12.75, 6.18.14, 6.19.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.252, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

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

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