CVE-2026-45978 (GCVE-0-2026-45978)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:18 – Updated: 2026-05-27 12:18
VLAI
EPSS
VEX
Title
staging: greybus: lights: avoid NULL deref
Summary
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.
Severity
5.5 (Medium)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < a118724d7641b832fa14323e2733e28ae4834552
(git)
Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < 3cbe694d235d96f628ec7dc6ae4d8bdddb768699 (git) Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < ba5022162da63059bae36c4fd84d7031f582c71f (git) Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < 65f2c608096d766540953d9b170d216aa3b5eb95 (git) Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < 01b91cb3e748032fd96bbe0043812b426a52f091 (git) Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < 06162d85f830582da6e9e5fcf9c9504d6da9ae0b (git) Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < da46264a7016034a5bbbad034c012ef218b7d0af (git) Affected: 2870b52bae4c81823ffcb3ed2b0626fb39d64f48 , < efcffd9a6ad8d190651498d5eda53bfc7cf683a7 (git) |
guessed | |
| Linux | Linux |
Affected:
4.9
Unaffected: 0 , < 4.9 (semver) Unaffected: 5.10.252 , ≤ 5.10.* (semver) Unaffected: 5.15.202 , ≤ 5.15.* (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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},
{
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},
{
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},
{
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"version": "6.12.75",
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},
{
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},
{
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},
{
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}
]
}
],
"cpeApplicability": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: greybus: lights: avoid NULL deref\n\ngb_lights_light_config() stores channel_count before allocating the\nchannels array. If kcalloc() fails, gb_lights_release() iterates the\nnon-zero count and dereferences light-\u003echannels, which is NULL.\n\nAllocate channels first and only then publish channels_count so the\ncleanup path can\u0027t walk a NULL pointer."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T12:18:36.753Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552"
},
{
"url": "https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699"
},
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},
{
"url": "https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7"
}
],
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"datePublished": "2026-05-27T12:18:36.753Z",
"dateReserved": "2026-05-13T15:03:33.090Z",
"dateUpdated": "2026-05-27T12:18:36.753Z",
"state": "PUBLISHED"
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"vulnerability-lookup:meta": {
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"date": "2026-09-13",
"epss": "0.00123",
"percentile": "0.0233"
},
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If kcalloc() fails, gb_lights_release() iterates the\\nnon-zero count and dereferences light-\u003echannels, which is NULL.\\n\\nAllocate channels first and only then publish channels_count so the\\ncleanup path can\u0027t walk a NULL pointer.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/staging/greybus/light.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"a118724d7641b832fa14323e2733e28ae4834552\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"3cbe694d235d96f628ec7dc6ae4d8bdddb768699\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"ba5022162da63059bae36c4fd84d7031f582c71f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"65f2c608096d766540953d9b170d216aa3b5eb95\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"01b91cb3e748032fd96bbe0043812b426a52f091\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"06162d85f830582da6e9e5fcf9c9504d6da9ae0b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"da46264a7016034a5bbbad034c012ef218b7d0af\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2870b52bae4c81823ffcb3ed2b0626fb39d64f48\",\"lessThan\":\"efcffd9a6ad8d190651498d5eda53bfc7cf683a7\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/staging/greybus/light.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.252\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.202\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.165\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.128\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.14\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.4\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9\",\"versionEndExcluding\":\"5.10.252\",\"matchCriteriaId\":\"76AC1846-5EF5-4C28-9E88-EED4D74FB8F9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.202\",\"matchCriteriaId\":\"4002FC2B-1456-4666-B240-0EBF590C4671\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.165\",\"matchCriteriaId\":\"797C7F46-D0BE-4FB8-A502-C5EF8E6B6654\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.128\",\"matchCriteriaId\":\"851E9353-6C09-4CC9-877E-E09DB164A3C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"BCE16369-98ED-41CF-8995-DFDC10B288D2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.14\",\"matchCriteriaId\":\"BF463CB7-1F58-4607-B847-77ED23E4B9B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\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"redhat_vex": {
"aggregate_severity": "None",
"current_release_date": "2026-06-28T07:40:19+00:00",
"cve": "CVE-2026-45978",
"id": "CVE-2026-45978",
"initial_release_date": "2026-05-27T00:00:00+00:00",
"product_status:known_not_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: staging: greybus: lights: avoid NULL deref",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45978.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-27T16:58:21Z",
"cve": "CVE-2026-45978",
"id": "CVE-2026-45978",
"initial_release_date": "2026-05-28T03:55:03Z",
"product_status:known_affected": "57",
"product_status:known_not_affected": "242",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-45978",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-45978.json",
"version": "5"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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