{"api_version":"1","generated_at":"2026-09-18T17:56:37+00:00","cve":"CVE-2026-93163","urls":{"html":"https://cve.report/CVE-2026-93163","api":"https://cve.report/api/cve/CVE-2026-93163.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93163","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93163"},"summary":{"title":"hwrng: core - fix rng list on registration error","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: core - fix rng list on registration error\n\nhwrng_register(rng) does the following:\n\n1. Checks if rng has name and read methods set\n2. Checks if the name already exists\n3. Adds rng to global rng_list\n4. May try to set rng to current_rng\n\nIf step 4 fails, it returns an error. However, it does not remove the\nrng from rng_list, causing a dangling reference which can result in\nuse-after-free if the caller frees rng, since registration failed.\n\nAdd a list_del_init() cleanup step.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:11","updated_at":"2026-09-17 17:18:11"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd","name":"https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bee8d1fcdc8f389b595b0a4cf6fe8440f499458a","name":"https://git.kernel.org/stable/c/bee8d1fcdc8f389b595b0a4cf6fe8440f499458a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cf293c9c7424de0d04b51367d07f40570ce80231","name":"https://git.kernel.org/stable/c/cf293c9c7424de0d04b51367d07f40570ce80231","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/de4f1bcb61a73cc896decdbd27d61a34add93b53","name":"https://git.kernel.org/stable/c/de4f1bcb61a73cc896decdbd27d61a34add93b53","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93163","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93163","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2bbb6983887fefc8026beab01198d30f47b7bd22 de4f1bcb61a73cc896decdbd27d61a34add93b53 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2bbb6983887fefc8026beab01198d30f47b7bd22 cf293c9c7424de0d04b51367d07f40570ce80231 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2bbb6983887fefc8026beab01198d30f47b7bd22 bee8d1fcdc8f389b595b0a4cf6fe8440f499458a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2bbb6983887fefc8026beab01198d30f47b7bd22 3a5834db2b1ce25649f330e78efe1ccde78967fd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 42802952a2725f85f7e36ee3b29593af5fe87197 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.9.320 4.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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/char/hw_random/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"de4f1bcb61a73cc896decdbd27d61a34add93b53","status":"affected","version":"2bbb6983887fefc8026beab01198d30f47b7bd22","versionType":"git"},{"lessThan":"cf293c9c7424de0d04b51367d07f40570ce80231","status":"affected","version":"2bbb6983887fefc8026beab01198d30f47b7bd22","versionType":"git"},{"lessThan":"bee8d1fcdc8f389b595b0a4cf6fe8440f499458a","status":"affected","version":"2bbb6983887fefc8026beab01198d30f47b7bd22","versionType":"git"},{"lessThan":"3a5834db2b1ce25649f330e78efe1ccde78967fd","status":"affected","version":"2bbb6983887fefc8026beab01198d30f47b7bd22","versionType":"git"},{"status":"affected","version":"42802952a2725f85f7e36ee3b29593af5fe87197","versionType":"git"},{"lessThan":"4.10","status":"affected","version":"4.9.320","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/char/hw_random/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.14"},{"lessThan":"4.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.320","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: core - fix rng list on registration error\n\nhwrng_register(rng) does the following:\n\n1. Checks if rng has name and read methods set\n2. Checks if the name already exists\n3. Adds rng to global rng_list\n4. May try to set rng to current_rng\n\nIf step 4 fails, it returns an error. However, it does not remove the\nrng from rng_list, causing a dangling reference which can result in\nuse-after-free if the caller frees rng, since registration failed.\n\nAdd a list_del_init() cleanup step."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:56.570Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/de4f1bcb61a73cc896decdbd27d61a34add93b53"},{"url":"https://git.kernel.org/stable/c/cf293c9c7424de0d04b51367d07f40570ce80231"},{"url":"https://git.kernel.org/stable/c/bee8d1fcdc8f389b595b0a4cf6fe8440f499458a"},{"url":"https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd"}],"title":"hwrng: core - fix rng list on registration error","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93163","datePublished":"2026-09-17T16:11:56.570Z","dateReserved":"2026-09-17T16:02:15.089Z","dateUpdated":"2026-09-17T16:11:56.570Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:11","lastModifiedDate":"2026-09-17 17:18:11","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93163","Ordinal":"1","Title":"hwrng: core - fix rng list on registration error","CVE":"CVE-2026-93163","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93163","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: core - fix rng list on registration error\n\nhwrng_register(rng) does the following:\n\n1. Checks if rng has name and read methods set\n2. Checks if the name already exists\n3. Adds rng to global rng_list\n4. May try to set rng to current_rng\n\nIf step 4 fails, it returns an error. However, it does not remove the\nrng from rng_list, causing a dangling reference which can result in\nuse-after-free if the caller frees rng, since registration failed.\n\nAdd a list_del_init() cleanup step.","Type":"Description","Title":"hwrng: core - fix rng list on registration error"}]}}}