{"id":"CVE-2026-45978","state":"PUBLISHED","title":"staging: greybus: lights: avoid NULL deref","description":"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->channels, which is NULL.\n\nAllocate channels first and only then publish channels_count so the\ncleanup path can't walk a NULL pointer.","publishedAt":"2026-05-27T12:18:36.753Z","updatedAt":"2026-05-27T12:18:36.753Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"a118724d7641b832fa14323e2733e28ae4834552","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"3cbe694d235d96f628ec7dc6ae4d8bdddb768699","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"ba5022162da63059bae36c4fd84d7031f582c71f","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"65f2c608096d766540953d9b170d216aa3b5eb95","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"01b91cb3e748032fd96bbe0043812b426a52f091","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"06162d85f830582da6e9e5fcf9c9504d6da9ae0b","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"da46264a7016034a5bbbad034c012ef218b7d0af","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"efcffd9a6ad8d190651498d5eda53bfc7cf683a7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/greybus/light.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/greybus/light.c"]}],"references":["https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552","https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699","https://git.kernel.org/stable/c/ba5022162da63059bae36c4fd84d7031f582c71f","https://git.kernel.org/stable/c/65f2c608096d766540953d9b170d216aa3b5eb95","https://git.kernel.org/stable/c/01b91cb3e748032fd96bbe0043812b426a52f091","https://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b","https://git.kernel.org/stable/c/da46264a7016034a5bbbad034c012ef218b7d0af","https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45978.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45978","state":"PUBLISHED","datePublished":"2026-05-27T12:18:36.753Z","dateUpdated":"2026-05-27T12:18:36.753Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.090Z"},"containers":{"cna":{"title":"staging: greybus: lights: avoid NULL deref","descriptions":[{"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->channels, which is NULL.\n\nAllocate channels first and only then publish channels_count so the\ncleanup path can't walk a NULL pointer."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"a118724d7641b832fa14323e2733e28ae4834552","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"3cbe694d235d96f628ec7dc6ae4d8bdddb768699","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"ba5022162da63059bae36c4fd84d7031f582c71f","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"65f2c608096d766540953d9b170d216aa3b5eb95","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"01b91cb3e748032fd96bbe0043812b426a52f091","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"06162d85f830582da6e9e5fcf9c9504d6da9ae0b","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"da46264a7016034a5bbbad034c012ef218b7d0af","versionType":"git"},{"version":"2870b52bae4c81823ffcb3ed2b0626fb39d64f48","status":"affected","lessThan":"efcffd9a6ad8d190651498d5eda53bfc7cf683a7","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/greybus/light.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/greybus/light.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a118724d7641b832fa14323e2733e28ae4834552"},{"url":"https://git.kernel.org/stable/c/3cbe694d235d96f628ec7dc6ae4d8bdddb768699"},{"url":"https://git.kernel.org/stable/c/ba5022162da63059bae36c4fd84d7031f582c71f"},{"url":"https://git.kernel.org/stable/c/65f2c608096d766540953d9b170d216aa3b5eb95"},{"url":"https://git.kernel.org/stable/c/01b91cb3e748032fd96bbe0043812b426a52f091"},{"url":"https://git.kernel.org/stable/c/06162d85f830582da6e9e5fcf9c9504d6da9ae0b"},{"url":"https://git.kernel.org/stable/c/da46264a7016034a5bbbad034c012ef218b7d0af"},{"url":"https://git.kernel.org/stable/c/efcffd9a6ad8d190651498d5eda53bfc7cf683a7"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:18:36.753Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}