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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 01b91cb3e748032fd96bbe0043812b426a52f091, 06162d85f830582da6e9e5fcf9c9504d6da9ae0b, 3cbe694d235d96f628ec7dc6ae4d8bdddb768699.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 01b91cb3e748032fd96bbe0043812b426a52f091, 06162d85f830582da6e9e5fcf9c9504d6da9ae0b, 3cbe694d235d96f628ec7dc6ae4d8bdddb768699 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 27, 2026
Updated
Jun 17, 2026
EPSS
0.1% · 2th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.9 and later · before 5.10.252
  • linux linux kernel5.11 and later · before 5.15.202
  • linux linux kernel5.16 and later · before 6.1.165
  • linux linux kernel6.2 and later · before 6.6.128
  • linux linux kernel6.7 and later · before 6.12.75
  • linux linux kernel6.13 and later · before 6.18.14
  • linux linux kernel6.19 and later · before 6.19.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.9affected
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before a118724d7641b832fa14323e2733e28ae4834552affected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before 3cbe694d235d96f628ec7dc6ae4d8bdddb768699affected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before ba5022162da63059bae36c4fd84d7031f582c71faffected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before 65f2c608096d766540953d9b170d216aa3b5eb95affected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before 01b91cb3e748032fd96bbe0043812b426a52f091affected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before 06162d85f830582da6e9e5fcf9c9504d6da9ae0baffected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before da46264a7016034a5bbbad034c012ef218b7d0afaffected · git
    • 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 and later · before efcffd9a6ad8d190651498d5eda53bfc7cf683a7affected · git
    • before 4.9not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.170-16.1.170-1
Debian:13linuxbefore 6.12.85-16.12.85-1
Debian:14linuxbefore 6.18.14-16.18.14-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2026-45976May 27, 2026 · drm/amdgpu: Fix memory leak in amdgpu_ras_init()
    22Monitor
  • ← EarlierCVE-2026-45977May 27, 2026 · fbnic: close fw_log race between users and teardown
    22Monitor
  • Later →CVE-2026-45979May 27, 2026 · drm/amdgpu: clean up the amdgpu_cs_parser_bos
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux01b91cb3e748032fd96bbe0043812b426a52f091Vendor (CNA)
Linux Linux06162d85f830582da6e9e5fcf9c9504d6da9ae0bVendor (CNA)
Linux Linux3cbe694d235d96f628ec7dc6ae4d8bdddb768699Vendor (CNA)
Linux Linux65f2c608096d766540953d9b170d216aa3b5eb95Vendor (CNA)
Linux Linuxa118724d7641b832fa14323e2733e28ae4834552Vendor (CNA)
Linux Linuxba5022162da63059bae36c4fd84d7031f582c71fVendor (CNA)
Linux Linuxda46264a7016034a5bbbad034c012ef218b7d0afVendor (CNA)
Linux Linuxefcffd9a6ad8d190651498d5eda53bfc7cf683a7Vendor (CNA)
debian:linux6.1.170-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records