🛡️ CVE-2026-45978 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-45978 as tracked by Ubuntu, for the package linux. The fix is available in version 5.15.0-1112.119~20.04.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

UBUNTU-CVE-2026-45978 is recorded against 157 packages.

  • linux
  • linux-allwinner-5.19
  • linux-aws
  • linux-aws-5.0
  • linux-aws-5.11
  • linux-aws-5.13
  • linux-aws-5.15 (fixed in 5.15.0-1112.119~20.04.1)
  • linux-aws-5.19
  • linux-aws-5.3
  • linux-aws-5.4
  • linux-aws-5.8
  • linux-aws-6.14
  • linux-aws-6.17
  • linux-aws-6.2
  • linux-aws-6.5
  • linux-aws-6.8 (fixed in 6.8.0-1060.63~22.04.1)
  • linux-aws-fips (fixed in 6.8.0-1060.63+fips1)
  • linux-aws-hwe
  • linux-azure
  • linux-azure-4.15
  • linux-azure-5.11
  • linux-azure-5.13
  • linux-azure-5.15 (fixed in 5.15.0-1117.126~20.04.1)
  • linux-azure-5.19
Show the remaining 133 packages
  • linux-azure-5.3
  • linux-azure-5.4
  • linux-azure-5.8
  • linux-azure-6.11
  • linux-azure-6.14
  • linux-azure-6.17
  • linux-azure-6.2
  • linux-azure-6.5
  • linux-azure-6.8 (fixed in 6.8.0-1063.71~22.04.1)
  • linux-azure-edge
  • linux-azure-fde
  • linux-azure-fde-5.15 (fixed in 5.15.0-1117.126~20.04.2)
  • linux-azure-fde-5.19
  • linux-azure-fde-6.14
  • linux-azure-fde-6.17
  • linux-azure-fde-6.2
  • linux-azure-fde-6.8 (fixed in 6.8.0-1062.69~22.04.1)
  • linux-azure-fips (fixed in 6.8.0-1062.69+fips1)
  • linux-azure-nvidia
  • linux-azure-nvidia-6.14
  • linux-bluefield
  • linux-fips (fixed in 6.8.0-134.134+fips1)
  • linux-gcp
  • linux-gcp-4.15
  • linux-gcp-5.11
  • linux-gcp-5.13
  • linux-gcp-5.15
  • linux-gcp-5.19
  • linux-gcp-5.3
  • linux-gcp-5.4
  • linux-gcp-5.8
  • linux-gcp-6.11
  • linux-gcp-6.14
  • linux-gcp-6.17
  • linux-gcp-6.2
  • linux-gcp-6.5
  • linux-gcp-6.8 (fixed in 6.8.0-1063.69~22.04.1)
  • linux-gcp-fips (fixed in 6.8.0-1063.69+fips1)
  • linux-gke (fixed in 6.8.0-1058.64)
  • linux-gke-4.15
  • linux-gke-5.15
  • linux-gke-5.4
  • linux-gkeop (fixed in 6.8.0-1045.48)
  • linux-gkeop-5.15
  • linux-gkeop-5.4
  • linux-hwe
  • linux-hwe-5.11
  • linux-hwe-5.13
  • linux-hwe-5.15 (fixed in 5.15.0-186.196~20.04.1)
  • linux-hwe-5.19
  • linux-hwe-5.4
  • linux-hwe-5.8
  • linux-hwe-6.11
  • linux-hwe-6.14
  • linux-hwe-6.17
  • linux-hwe-6.2
  • linux-hwe-6.5
  • linux-hwe-6.8 (fixed in 6.8.0-136.136~22.04.1)
  • linux-hwe-edge
  • linux-ibm (fixed in 6.8.0-1060.61)
  • linux-ibm-5.15 (fixed in 5.15.0-1106.110~20.04.1)
  • linux-ibm-5.4
  • linux-ibm-6.8 (fixed in 6.8.0-1060.61~22.04.1)
  • linux-intel-5.13
  • linux-intel-iot-realtime (fixed in 5.15.0-1104.106)
  • linux-intel-iotg (fixed in 5.15.0-1107.113)
  • linux-intel-iotg-5.15 (fixed in 5.15.0-1107.113~20.04.1)
  • linux-iot
  • linux-kvm (fixed in 5.15.0-1104.109)
  • linux-lowlatency (fixed in 6.8.0-134.134.1)
  • linux-lowlatency-hwe-5.15 (fixed in 5.15.0-184.194~20.04.1)
  • linux-lowlatency-hwe-5.19
  • linux-lowlatency-hwe-6.11
  • linux-lowlatency-hwe-6.2
  • linux-lowlatency-hwe-6.5
  • linux-lowlatency-hwe-6.8 (fixed in 6.8.0-134.134.1~22.04.1)
  • linux-nvidia (fixed in 6.8.0-1058.61)
  • linux-nvidia-6.11
  • linux-nvidia-6.17
  • linux-nvidia-6.2
  • linux-nvidia-6.5
  • linux-nvidia-6.8 (fixed in 6.8.0-1058.61~22.04.1)
  • linux-nvidia-lowlatency (fixed in 6.8.0-1058.61.1)
  • linux-nvidia-tegra (fixed in 6.8.0-1029.30)
  • linux-nvidia-tegra-5.15 (fixed in 5.15.0-1064.66~20.04.1)
  • linux-nvidia-tegra-igx (fixed in 5.15.0-1053.53)
  • linux-oem
  • linux-oem-5.10
  • linux-oem-5.13
  • linux-oem-5.14
  • linux-oem-5.17
  • linux-oem-5.6
  • linux-oem-6.0
  • linux-oem-6.1
  • linux-oem-6.11
  • linux-oem-6.14
  • linux-oem-6.17
  • linux-oem-6.5
  • linux-oem-6.8
  • linux-oracle
  • linux-oracle-5.0
  • linux-oracle-5.11
  • linux-oracle-5.13
  • linux-oracle-5.15 (fixed in 5.15.0-1109.115~20.04.1)
  • linux-oracle-5.3
  • linux-oracle-5.4
  • linux-oracle-5.8
  • linux-oracle-6.14
  • linux-oracle-6.17
  • linux-oracle-6.5
  • linux-oracle-6.8 (fixed in 6.8.0-1057.58~22.04.1)
  • linux-raspi
  • linux-raspi-5.4
  • linux-raspi-realtime (fixed in 6.8.0-2049.50)
  • linux-raspi2
  • linux-realtime
  • linux-realtime-6.14
  • linux-realtime-6.17
  • linux-realtime-6.8 (fixed in 6.8.1-1055.56~22.04.1)
  • linux-riscv
  • linux-riscv-5.11
  • linux-riscv-5.15 (fixed in 5.15.0-1106.110~20.04.1)
  • linux-riscv-5.19
  • linux-riscv-5.8
  • linux-riscv-6.14
  • linux-riscv-6.17
  • linux-riscv-6.5
  • linux-riscv-6.8 (fixed in 6.8.0-134.134~22.04.1)
  • linux-starfive-5.19
  • linux-starfive-6.2
  • linux-starfive-6.5
  • linux-xilinx (fixed in 6.8.0-1032.33)
  • linux-xilinx-zynqmp (fixed in 5.15.0-1075.79)

Timeline and source

Published on 27 May 2026 and last revised on 11 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)

CVE-2026-45978 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-05-27
Updated 2026-08-12
Modified 2026-08-11
Fix URL N/A

Affected Packages

Software From version Fixed in
linux — —
linux-allwinner-5.19 — —
linux-aws — —
linux-aws-5.0 — —
linux-aws-5.11 — —
linux-aws-5.13 — —
linux-aws-5.15 — 5.15.0-1112.119~20.04.1
linux-aws-5.19 — —
linux-aws-5.3 — —
linux-aws-5.4 — —
linux-aws-5.8 — —
linux-aws-6.14 — —
linux-aws-6.17 — —
linux-aws-6.2 — —
linux-aws-6.5 — —
linux-aws-6.8 — 6.8.0-1060.63~22.04.1
linux-aws-fips — 6.8.0-1060.63+fips1
linux-aws-hwe — —
linux-azure — —
linux-azure-4.15 — —
linux-azure-5.11 — —
linux-azure-5.13 — —
linux-azure-5.15 — 5.15.0-1117.126~20.04.1
linux-azure-5.19 — —
linux-azure-5.3 — —
linux-azure-5.4 — —
linux-azure-5.8 — —
linux-azure-6.11 — —
linux-azure-6.14 — —
linux-azure-6.17 — —
linux-azure-6.2 — —
linux-azure-6.5 — —
linux-azure-6.8 — 6.8.0-1063.71~22.04.1
linux-azure-edge — —
linux-azure-fde — —
linux-azure-fde-5.15 — 5.15.0-1117.126~20.04.2
linux-azure-fde-5.19 — —
linux-azure-fde-6.14 — —
linux-azure-fde-6.17 — —
linux-azure-fde-6.2 — —
linux-azure-fde-6.8 — 6.8.0-1062.69~22.04.1
linux-azure-fips — 6.8.0-1062.69+fips1
linux-azure-nvidia — —
linux-azure-nvidia-6.14 — —
linux-bluefield — —
linux-fips — 6.8.0-134.134+fips1
linux-gcp — —
linux-gcp-4.15 — —
linux-gcp-5.11 — —
linux-gcp-5.13 — —
linux-gcp-5.15 — —
linux-gcp-5.19 — —
linux-gcp-5.3 — —
linux-gcp-5.4 — —
linux-gcp-5.8 — —
linux-gcp-6.11 — —
linux-gcp-6.14 — —
linux-gcp-6.17 — —
linux-gcp-6.2 — —
linux-gcp-6.5 — —
linux-gcp-6.8 — 6.8.0-1063.69~22.04.1
linux-gcp-fips — 6.8.0-1063.69+fips1
linux-gke — 6.8.0-1058.64
linux-gke-4.15 — —
linux-gke-5.15 — —
linux-gke-5.4 — —
linux-gkeop — 6.8.0-1045.48
linux-gkeop-5.15 — —
linux-gkeop-5.4 — —
linux-hwe — —
linux-hwe-5.11 — —
linux-hwe-5.13 — —
linux-hwe-5.15 — 5.15.0-186.196~20.04.1
linux-hwe-5.19 — —
linux-hwe-5.4 — —
linux-hwe-5.8 — —
linux-hwe-6.11 — —
linux-hwe-6.14 — —
linux-hwe-6.17 — —
linux-hwe-6.2 — —
linux-hwe-6.5 — —
linux-hwe-6.8 — 6.8.0-136.136~22.04.1
linux-hwe-edge — —
linux-ibm — 6.8.0-1060.61
linux-ibm-5.15 — 5.15.0-1106.110~20.04.1
linux-ibm-5.4 — —
linux-ibm-6.8 — 6.8.0-1060.61~22.04.1
linux-intel-5.13 — —
linux-intel-iot-realtime — 5.15.0-1104.106
linux-intel-iotg — 5.15.0-1107.113
linux-intel-iotg-5.15 — 5.15.0-1107.113~20.04.1
linux-iot — —
linux-kvm — 5.15.0-1104.109
linux-lowlatency — 6.8.0-134.134.1
linux-lowlatency-hwe-5.15 — 5.15.0-184.194~20.04.1
linux-lowlatency-hwe-5.19 — —
linux-lowlatency-hwe-6.11 — —
linux-lowlatency-hwe-6.2 — —
linux-lowlatency-hwe-6.5 — —
linux-lowlatency-hwe-6.8 — 6.8.0-134.134.1~22.04.1
linux-nvidia — 6.8.0-1058.61
linux-nvidia-6.11 — —
linux-nvidia-6.17 — —
linux-nvidia-6.2 — —
linux-nvidia-6.5 — —
linux-nvidia-6.8 — 6.8.0-1058.61~22.04.1
linux-nvidia-lowlatency — 6.8.0-1058.61.1
linux-nvidia-tegra — 6.8.0-1029.30
linux-nvidia-tegra-5.15 — 5.15.0-1064.66~20.04.1
linux-nvidia-tegra-igx — 5.15.0-1053.53
linux-oem — —
linux-oem-5.10 — —
linux-oem-5.13 — —
linux-oem-5.14 — —
linux-oem-5.17 — —
linux-oem-5.6 — —
linux-oem-6.0 — —
linux-oem-6.1 — —
linux-oem-6.11 — —
linux-oem-6.14 — —
linux-oem-6.17 — —
linux-oem-6.5 — —
linux-oem-6.8 — —
linux-oracle — —
linux-oracle-5.0 — —
linux-oracle-5.11 — —
linux-oracle-5.13 — —
linux-oracle-5.15 — 5.15.0-1109.115~20.04.1
linux-oracle-5.3 — —
linux-oracle-5.4 — —
linux-oracle-5.8 — —
linux-oracle-6.14 — —
linux-oracle-6.17 — —
linux-oracle-6.5 — —
linux-oracle-6.8 — 6.8.0-1057.58~22.04.1
linux-raspi — —
linux-raspi-5.4 — —
linux-raspi-realtime — 6.8.0-2049.50
linux-raspi2 — —
linux-realtime — —
linux-realtime-6.14 — —
linux-realtime-6.17 — —
linux-realtime-6.8 — 6.8.1-1055.56~22.04.1
linux-riscv — —
linux-riscv-5.11 — —
linux-riscv-5.15 — 5.15.0-1106.110~20.04.1
linux-riscv-5.19 — —
linux-riscv-5.8 — —
linux-riscv-6.14 — —
linux-riscv-6.17 — —
linux-riscv-6.5 — —
linux-riscv-6.8 — 6.8.0-134.134~22.04.1
linux-starfive-5.19 — —
linux-starfive-6.2 — —
linux-starfive-6.5 — —
linux-xilinx — 6.8.0-1032.33
linux-xilinx-zynqmp — 5.15.0-1075.79

References

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