{"id":"CVE-2026-93163","state":"PUBLISHED","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.","publishedAt":"2026-09-17T16:11:56.570Z","updatedAt":"2026-10-30T12:36:10.984Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"30b2cc2966dac87ee95a99c49e28486c2a8129cd","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"e37c67f768234e14cd6ea3b081568dd915c5b67e","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"de4f1bcb61a73cc896decdbd27d61a34add93b53","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"cf293c9c7424de0d04b51367d07f40570ce80231","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"bee8d1fcdc8f389b595b0a4cf6fe8440f499458a","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"3a5834db2b1ce25649f330e78efe1ccde78967fd","versionType":"git"},{"version":"42802952a2725f85f7e36ee3b29593af5fe87197","status":"affected","versionType":"git"},{"version":"4.9.320","status":"affected","lessThan":"4.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/hw_random/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","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/char/hw_random/core.c"]}],"references":["https://git.kernel.org/stable/c/30b2cc2966dac87ee95a99c49e28486c2a8129cd","https://git.kernel.org/stable/c/e37c67f768234e14cd6ea3b081568dd915c5b67e","https://git.kernel.org/stable/c/de4f1bcb61a73cc896decdbd27d61a34add93b53","https://git.kernel.org/stable/c/cf293c9c7424de0d04b51367d07f40570ce80231","https://git.kernel.org/stable/c/bee8d1fcdc8f389b595b0a4cf6fe8440f499458a","https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93163.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93163","state":"PUBLISHED","datePublished":"2026-09-17T16:11:56.570Z","dateUpdated":"2026-10-30T12:36:10.984Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-17T16:02:15.089Z"},"containers":{"cna":{"title":"hwrng: core - fix rng list on registration error","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"30b2cc2966dac87ee95a99c49e28486c2a8129cd","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"e37c67f768234e14cd6ea3b081568dd915c5b67e","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"de4f1bcb61a73cc896decdbd27d61a34add93b53","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"cf293c9c7424de0d04b51367d07f40570ce80231","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"bee8d1fcdc8f389b595b0a4cf6fe8440f499458a","versionType":"git"},{"version":"2bbb6983887fefc8026beab01198d30f47b7bd22","status":"affected","lessThan":"3a5834db2b1ce25649f330e78efe1ccde78967fd","versionType":"git"},{"version":"42802952a2725f85f7e36ee3b29593af5fe87197","status":"affected","versionType":"git"},{"version":"4.9.320","status":"affected","lessThan":"4.10","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/char/hw_random/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.14","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","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/char/hw_random/core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/30b2cc2966dac87ee95a99c49e28486c2a8129cd"},{"url":"https://git.kernel.org/stable/c/e37c67f768234e14cd6ea3b081568dd915c5b67e"},{"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:36:10.984Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.320"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}