# CVE-2026-45978: linux: In the Linux kernel, the following vulnerability has been resolved:  staging: greybus: lights: avoid NULL deref  gb_l...

CVE-2026-45978 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-45978, released May 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-45978
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.170-1 | [DEBIAN-CVE-2026-45978](https://patchblox.com/security/data/fix/linux/debian-cve-2026-45978.md) | May 27, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.85-1 | [DEBIAN-CVE-2026-45978](https://patchblox.com/security/data/fix/linux/debian-cve-2026-45978.md) | May 27, 2026 |
| Linux | linux Debian 14 | 6.18.14-1 | [DEBIAN-CVE-2026-45978](https://patchblox.com/security/data/fix/linux/debian-cve-2026-45978.md) | May 27, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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