{"id":"CVE-2026-90219","state":"PUBLISHED","title":"RDMA/cxgb4: Free debugfs on registration failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Free debugfs on registration failure\n\nc4iw_alloc() creates the per-device debugfs tree (dev->debugfs_root via\nsetup_debugfs()), but it is removed only in c4iw_remove(), not in\nc4iw_dealloc().  When RDMA device registration fails, the registration\nworker's err_dealloc_ctx path calls c4iw_dealloc() directly, bypassing\nc4iw_remove(), so the debugfs dentries leak and outlive the freed\nc4iw_dev.\n\nMove debugfs_remove_recursive() into c4iw_dealloc() so every path that\nfrees ctx->dev also removes its debugfs tree.","publishedAt":"2026-09-17T16:07:30.778Z","updatedAt":"2026-10-19T08:59:55.119Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"459b59f7ed56511d6529311cb4e5e482ebfcfb8e","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"c332d9e7dce234d8bef78271d003a68ee943b61b","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"f98e894ec029a752cf9c7f7834741bead0fb463d","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"479a7f90060e62bdd9bb4036ec0a70bf460f6d23","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"046425412529dbfca1433c8bef5641b271b4ab2a","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"ea41b5630fa3d9877ce9ed8832cf5575f742bfbb","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"fe5c16bb6252dea6025b748257ddc3b2665495b0","versionType":"git"},{"version":"98fa991017981b52dcc4dc3924fc8e1e83e41bf4","status":"affected","versionType":"git"},{"version":"af92e4a595e006b498c44b617ea38f697eca3469","status":"affected","versionType":"git"},{"version":"9c0cec79e5c914662c2cf98b4a729c0fcc8c872e","status":"affected","versionType":"git"},{"version":"4.19.130","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.49","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"5.7.6","status":"affected","lessThan":"5.8","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/device.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/device.c"]}],"references":["https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e","https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8","https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b","https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d","https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23","https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a","https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb","https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90219.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90219","state":"PUBLISHED","datePublished":"2026-09-17T16:07:30.778Z","dateUpdated":"2026-10-19T08:59:55.119Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.793Z"},"containers":{"cna":{"title":"RDMA/cxgb4: Free debugfs on registration failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: Free debugfs on registration failure\n\nc4iw_alloc() creates the per-device debugfs tree (dev->debugfs_root via\nsetup_debugfs()), but it is removed only in c4iw_remove(), not in\nc4iw_dealloc().  When RDMA device registration fails, the registration\nworker's err_dealloc_ctx path calls c4iw_dealloc() directly, bypassing\nc4iw_remove(), so the debugfs dentries leak and outlive the freed\nc4iw_dev.\n\nMove debugfs_remove_recursive() into c4iw_dealloc() so every path that\nfrees ctx->dev also removes its debugfs tree."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"459b59f7ed56511d6529311cb4e5e482ebfcfb8e","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"c332d9e7dce234d8bef78271d003a68ee943b61b","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"f98e894ec029a752cf9c7f7834741bead0fb463d","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"479a7f90060e62bdd9bb4036ec0a70bf460f6d23","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"046425412529dbfca1433c8bef5641b271b4ab2a","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"ea41b5630fa3d9877ce9ed8832cf5575f742bfbb","versionType":"git"},{"version":"49ea0c036ede81f126f1a9389d377999fdf5c5a1","status":"affected","lessThan":"fe5c16bb6252dea6025b748257ddc3b2665495b0","versionType":"git"},{"version":"98fa991017981b52dcc4dc3924fc8e1e83e41bf4","status":"affected","versionType":"git"},{"version":"af92e4a595e006b498c44b617ea38f697eca3469","status":"affected","versionType":"git"},{"version":"9c0cec79e5c914662c2cf98b4a729c0fcc8c872e","status":"affected","versionType":"git"},{"version":"4.19.130","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.49","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"5.7.6","status":"affected","lessThan":"5.8","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/device.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/infiniband/hw/cxgb4/device.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/459b59f7ed56511d6529311cb4e5e482ebfcfb8e"},{"url":"https://git.kernel.org/stable/c/cd60992f09b7e83bfd3c76e3bb06b29f3e2fa0a8"},{"url":"https://git.kernel.org/stable/c/c332d9e7dce234d8bef78271d003a68ee943b61b"},{"url":"https://git.kernel.org/stable/c/f98e894ec029a752cf9c7f7834741bead0fb463d"},{"url":"https://git.kernel.org/stable/c/479a7f90060e62bdd9bb4036ec0a70bf460f6d23"},{"url":"https://git.kernel.org/stable/c/046425412529dbfca1433c8bef5641b271b4ab2a"},{"url":"https://git.kernel.org/stable/c/ea41b5630fa3d9877ce9ed8832cf5575f742bfbb"},{"url":"https://git.kernel.org/stable/c/fe5c16bb6252dea6025b748257ddc3b2665495b0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:59:55.119Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7.6"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}