{"api_version":"1","generated_at":"2026-05-09T14:52:11+00:00","cve":"CVE-2026-43432","urls":{"html":"https://cve.report/CVE-2026-43432","api":"https://cve.report/api/cve/CVE-2026-43432.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43432","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43432"},"summary":{"title":"usb: xhci: Fix memory leak in xhci_disable_slot()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix memory leak in xhci_disable_slot()\n\nxhci_alloc_command() allocates a command structure and, when the\nsecond argument is true, also allocates a completion structure.\nCurrently, the error handling path in xhci_disable_slot() only frees\nthe command structure using kfree(), causing the completion structure\nto leak.\n\nUse xhci_free_command() instead of kfree(). xhci_free_command() correctly\nfrees both the command structure and the associated completion structure.\nSince the command structure is allocated with zero-initialization,\ncommand->in_ctx is NULL and will not be erroneously freed by\nxhci_free_command().\n\nThis bug was found using an experimental static analysis tool we are\ndeveloping. The tool is based on the LLVM framework and is specifically\ndesigned to detect memory management issues. It is currently under\nactive development and not yet publicly available, but we plan to\nopen-source it after our research is published.\n\nThe bug was originally detected on v6.13-rc1 using our static analysis\ntool, and we have verified that the issue persists in the latest mainline\nkernel.\n\nWe performed build testing on x86_64 with allyesconfig using GCC=11.4.0.\nSince triggering these error paths in xhci_disable_slot() requires specific\nhardware conditions or abnormal state, we were unable to construct a test\ncase to reliably trigger these specific error paths at runtime.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 15:16:55","updated_at":"2026-05-08 15:16:55"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6288baf0c8c4dcfbf206773aede9c1f2269cec28","name":"https://git.kernel.org/stable/c/6288baf0c8c4dcfbf206773aede9c1f2269cec28","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2e2baa8fb5aa4d080cbfeb84c51eff797529f413","name":"https://git.kernel.org/stable/c/2e2baa8fb5aa4d080cbfeb84c51eff797529f413","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c65f1b840ab8ce72ba68f1b63bab7960f8fdfa89","name":"https://git.kernel.org/stable/c/c65f1b840ab8ce72ba68f1b63bab7960f8fdfa89","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/078b446efc0f5e496c31bccb72b98af979963a83","name":"https://git.kernel.org/stable/c/078b446efc0f5e496c31bccb72b98af979963a83","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46aea90763832cd6e9b0c2e1c00e6a9512156d4b","name":"https://git.kernel.org/stable/c/46aea90763832cd6e9b0c2e1c00e6a9512156d4b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/807e4fb5140c73eb5dba1e399a990db5c1f3cdf8","name":"https://git.kernel.org/stable/c/807e4fb5140c73eb5dba1e399a990db5c1f3cdf8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c1c8550e70401159184130a1afc6261db01fc0ce","name":"https://git.kernel.org/stable/c/c1c8550e70401159184130a1afc6261db01fc0ce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62","name":"https://git.kernel.org/stable/c/1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43432","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43432","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected fee8be5bde562d4f5f9a100ca80c6d7072ed34c8 1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 02d5a2a48bb44e7404b794df87e57588b2fd604e 6288baf0c8c4dcfbf206773aede9c1f2269cec28 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7faac1953ed1f658f719cdf7bb7303fa5eef822c 46aea90763832cd6e9b0c2e1c00e6a9512156d4b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7faac1953ed1f658f719cdf7bb7303fa5eef822c 2e2baa8fb5aa4d080cbfeb84c51eff797529f413 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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5.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.253 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.203 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.78 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.19 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.9 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/usb/host/xhci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62","status":"affected","version":"fee8be5bde562d4f5f9a100ca80c6d7072ed34c8","versionType":"git"},{"lessThan":"6288baf0c8c4dcfbf206773aede9c1f2269cec28","status":"affected","version":"02d5a2a48bb44e7404b794df87e57588b2fd604e","versionType":"git"},{"lessThan":"46aea90763832cd6e9b0c2e1c00e6a9512156d4b","status":"affected","version":"7faac1953ed1f658f719cdf7bb7303fa5eef822c","versionType":"git"},{"lessThan":"2e2baa8fb5aa4d080cbfeb84c51eff797529f413","status":"affected","version":"7faac1953ed1f658f719cdf7bb7303fa5eef822c","versionType":"git"},{"lessThan":"807e4fb5140c73eb5dba1e399a990db5c1f3cdf8","status":"affected","version":"7faac1953ed1f658f719cdf7bb7303fa5eef822c","versionType":"git"},{"lessThan":"c65f1b840ab8ce72ba68f1b63bab7960f8fdfa89","status":"affected","version":"7faac1953ed1f658f719cdf7bb7303fa5eef822c","versionType":"git"},{"lessThan":"078b446efc0f5e496c31bccb72b98af979963a83","status":"affected","version":"7faac1953ed1f658f719cdf7bb7303fa5eef822c","versionType":"git"},{"lessThan":"c1c8550e70401159184130a1afc6261db01fc0ce","status":"affected","version":"7faac1953ed1f658f719cdf7bb7303fa5eef822c","versionType":"git"},{"status":"affected","version":"cc7c2818c71ebace207df40cc586c8c74e3d1a59","versionType":"git"},{"status":"affected","version":"ec0cddcc2454ab08193beb473978f8f8889b7e24","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/usb/host/xhci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.16"},{"lessThan":"5.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.19","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.253","versionStartIncluding":"5.10.85","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.203","versionStartIncluding":"5.15.8","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.167","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.78","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.19","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.9","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.221","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.165","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix memory leak in xhci_disable_slot()\n\nxhci_alloc_command() allocates a command structure and, when the\nsecond argument is true, also allocates a completion structure.\nCurrently, the error handling path in xhci_disable_slot() only frees\nthe command structure using kfree(), causing the completion structure\nto leak.\n\nUse xhci_free_command() instead of kfree(). xhci_free_command() correctly\nfrees both the command structure and the associated completion structure.\nSince the command structure is allocated with zero-initialization,\ncommand->in_ctx is NULL and will not be erroneously freed by\nxhci_free_command().\n\nThis bug was found using an experimental static analysis tool we are\ndeveloping. The tool is based on the LLVM framework and is specifically\ndesigned to detect memory management issues. It is currently under\nactive development and not yet publicly available, but we plan to\nopen-source it after our research is published.\n\nThe bug was originally detected on v6.13-rc1 using our static analysis\ntool, and we have verified that the issue persists in the latest mainline\nkernel.\n\nWe performed build testing on x86_64 with allyesconfig using GCC=11.4.0.\nSince triggering these error paths in xhci_disable_slot() requires specific\nhardware conditions or abnormal state, we were unable to construct a test\ncase to reliably trigger these specific error paths at runtime."}],"providerMetadata":{"dateUpdated":"2026-05-08T14:22:03.985Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1e800e26d54ccf2ddf2ea6d6cbe021c804d8aa62"},{"url":"https://git.kernel.org/stable/c/6288baf0c8c4dcfbf206773aede9c1f2269cec28"},{"url":"https://git.kernel.org/stable/c/46aea90763832cd6e9b0c2e1c00e6a9512156d4b"},{"url":"https://git.kernel.org/stable/c/2e2baa8fb5aa4d080cbfeb84c51eff797529f413"},{"url":"https://git.kernel.org/stable/c/807e4fb5140c73eb5dba1e399a990db5c1f3cdf8"},{"url":"https://git.kernel.org/stable/c/c65f1b840ab8ce72ba68f1b63bab7960f8fdfa89"},{"url":"https://git.kernel.org/stable/c/078b446efc0f5e496c31bccb72b98af979963a83"},{"url":"https://git.kernel.org/stable/c/c1c8550e70401159184130a1afc6261db01fc0ce"}],"title":"usb: xhci: Fix memory leak in xhci_disable_slot()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43432","datePublished":"2026-05-08T14:22:03.985Z","dateReserved":"2026-05-01T14:12:56.009Z","dateUpdated":"2026-05-08T14:22:03.985Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 15:16:55","lastModifiedDate":"2026-05-08 15:16:55","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43432","Ordinal":"1","Title":"usb: xhci: Fix memory leak in xhci_disable_slot()","CVE":"CVE-2026-43432","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43432","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: xhci: Fix memory leak in xhci_disable_slot()\n\nxhci_alloc_command() allocates a command structure and, when the\nsecond argument is true, also allocates a completion structure.\nCurrently, the error handling path in xhci_disable_slot() only frees\nthe command structure using kfree(), causing the completion structure\nto leak.\n\nUse xhci_free_command() instead of kfree(). xhci_free_command() correctly\nfrees both the command structure and the associated completion structure.\nSince the command structure is allocated with zero-initialization,\ncommand->in_ctx is NULL and will not be erroneously freed by\nxhci_free_command().\n\nThis bug was found using an experimental static analysis tool we are\ndeveloping. The tool is based on the LLVM framework and is specifically\ndesigned to detect memory management issues. It is currently under\nactive development and not yet publicly available, but we plan to\nopen-source it after our research is published.\n\nThe bug was originally detected on v6.13-rc1 using our static analysis\ntool, and we have verified that the issue persists in the latest mainline\nkernel.\n\nWe performed build testing on x86_64 with allyesconfig using GCC=11.4.0.\nSince triggering these error paths in xhci_disable_slot() requires specific\nhardware conditions or abnormal state, we were unable to construct a test\ncase to reliably trigger these specific error paths at runtime.","Type":"Description","Title":"usb: xhci: Fix memory leak in xhci_disable_slot()"}]}}}