{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53042","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.380Z","datePublished":"2026-06-24T16:29:48.273Z","dateUpdated":"2026-06-24T16:29:48.273Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-24T16:29:48.273Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfwctl: Fix class init ordering to avoid NULL pointer dereference on device removal\n\nCXL is linked before fwctl in drivers/Makefile. Both use `module_init, so\n`cxl_pci_driver_init()` runs first. When `cxl_pci_probe()` calls\n`fwctl_register()` and then `device_add()`, fwctl_class is not yet\nregistered because fwctl_init() hasn't run, causing `class_to_subsys()` to\nreturn NULL and skip knode_class initialization.\n\nOn device removal, `class_to_subsys()` returns non-NULL, and\n`device_del()` calls `klist_del()` on the uninitialized knode, triggering\na NULL pointer dereference."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/fwctl/main.c"],"versions":[{"version":"858ce2f56b5253063f61f6b1c58a6dbf5d71da0b","lessThan":"a28f56988c8e5bb9375806a5cfb0bf54d662ae3f","status":"affected","versionType":"git"},{"version":"858ce2f56b5253063f61f6b1c58a6dbf5d71da0b","lessThan":"1075f2f590fdac147f8b8010c35b606564b5c7d7","status":"affected","versionType":"git"},{"version":"858ce2f56b5253063f61f6b1c58a6dbf5d71da0b","lessThan":"a55f80233f384dc89ef3425b2e1dd0e6d44bcf29","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/fwctl/main.c"],"versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"6.18.33","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/a28f56988c8e5bb9375806a5cfb0bf54d662ae3f"},{"url":"https://git.kernel.org/stable/c/1075f2f590fdac147f8b8010c35b606564b5c7d7"},{"url":"https://git.kernel.org/stable/c/a55f80233f384dc89ef3425b2e1dd0e6d44bcf29"}],"title":"fwctl: Fix class init ordering to avoid NULL pointer dereference on device removal","x_generator":{"engine":"bippy-1.2.0"}}}}