{"id":"CVE-2026-64220","state":"PUBLISHED","title":"device property: set fwnode->secondary to NULL in fwnode_init()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndevice property: set fwnode->secondary to NULL in fwnode_init()\n\nIf a firmware node is allocated on the stack (for instance: temporary\nsoftware node whose life-time we control) or on the heap - but using a\nnon-zeroing allocation function - and initialized using fwnode_init(),\nits secondary pointer will contain uninitalized memory which likely will\nbe neither NULL nor IS_ERR() and so may end up being dereferenced (for\nexample: in dev_to_swnode()). Set fwnode->secondary to NULL on\ninitialization.","publishedAt":"2026-07-24T15:23:06.931Z","updatedAt":"2026-07-24T15:23:06.931Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"f0e211d6539fae800217c10797993b7592d6ab01","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"3f1024deeab3b5443c29b3de4fe475e87309b8fa","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"371f53925a6714d0aa35f1aefdffc3e8cd62f480","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"34bf74b1fd2e4a44e27821a329204caf09df2976","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"508fd8ab158abd04b7f7d0f707cd6d6c405df4ea","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"f59e686c778cb41b8f7aa8fab2afd6a01afb3d47","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"215c90ee656114f5e8c32408228d97082f8e0eef","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/fwnode.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/fwnode.h"]}],"references":["https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01","https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa","https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480","https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976","https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea","https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47","https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64220.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64220","state":"PUBLISHED","datePublished":"2026-07-24T15:23:06.931Z","dateUpdated":"2026-07-24T15:23:06.931Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T15:36:31.770Z"},"containers":{"cna":{"title":"device property: set fwnode->secondary to NULL in fwnode_init()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndevice property: set fwnode->secondary to NULL in fwnode_init()\n\nIf a firmware node is allocated on the stack (for instance: temporary\nsoftware node whose life-time we control) or on the heap - but using a\nnon-zeroing allocation function - and initialized using fwnode_init(),\nits secondary pointer will contain uninitalized memory which likely will\nbe neither NULL nor IS_ERR() and so may end up being dereferenced (for\nexample: in dev_to_swnode()). Set fwnode->secondary to NULL on\ninitialization."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"f0e211d6539fae800217c10797993b7592d6ab01","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"3f1024deeab3b5443c29b3de4fe475e87309b8fa","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"371f53925a6714d0aa35f1aefdffc3e8cd62f480","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"34bf74b1fd2e4a44e27821a329204caf09df2976","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"508fd8ab158abd04b7f7d0f707cd6d6c405df4ea","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"f59e686c778cb41b8f7aa8fab2afd6a01afb3d47","versionType":"git"},{"version":"01bb86b380a306bd937c96da36f66429f3362137","status":"affected","lessThan":"215c90ee656114f5e8c32408228d97082f8e0eef","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/fwnode.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.15.209","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.175","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["include/linux/fwnode.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/f0e211d6539fae800217c10797993b7592d6ab01"},{"url":"https://git.kernel.org/stable/c/3f1024deeab3b5443c29b3de4fe475e87309b8fa"},{"url":"https://git.kernel.org/stable/c/371f53925a6714d0aa35f1aefdffc3e8cd62f480"},{"url":"https://git.kernel.org/stable/c/34bf74b1fd2e4a44e27821a329204caf09df2976"},{"url":"https://git.kernel.org/stable/c/508fd8ab158abd04b7f7d0f707cd6d6c405df4ea"},{"url":"https://git.kernel.org/stable/c/f59e686c778cb41b8f7aa8fab2afd6a01afb3d47"},{"url":"https://git.kernel.org/stable/c/215c90ee656114f5e8c32408228d97082f8e0eef"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-24T15:23:06.931Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.1.175"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}