{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-46905","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-25T13:45:52.717Z","datePublished":"2024-02-25T14:03:40.944Z","dateUpdated":"2025-05-04T07:00:01.486Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:00:01.486Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hso: fix NULL-deref on disconnect regression\n\nCommit 8a12f8836145 (\"net: hso: fix null-ptr-deref during tty device\nunregistration\") fixed the racy minor allocation reported by syzbot, but\nintroduced an unconditional NULL-pointer dereference on every disconnect\ninstead.\n\nSpecifically, the serial device table must no longer be accessed after\nthe minor has been released by hso_serial_tty_unregister()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/hso.c"],"versions":[{"version":"a462067d7c8e6953a733bf5ade8db947b1bb5449","lessThan":"5871761c5f0f20d6e98bf3b6bd7486d857589554","status":"affected","versionType":"git"},{"version":"145c89c441d27696961752bf51b323f347601bee","lessThan":"0c71d4c89559f72cec2592d078681a843bce570e","status":"affected","versionType":"git"},{"version":"caf5ac93b3b5d5fac032fc11fbea680e115421b4","lessThan":"24b699bea7553fc0b98dad9d864befb6005ac7f1","status":"affected","versionType":"git"},{"version":"92028d7a31e55d53e41cff679156b9432cffcb36","lessThan":"5c17cfe155d21954b4c7e2a78fa771cebcd86725","status":"affected","versionType":"git"},{"version":"4a2933c88399c0ebc738db39bbce3ae89786d723","lessThan":"d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e","status":"affected","versionType":"git"},{"version":"dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac","lessThan":"90642ee9eb581a13569b1c0bd57e85d962215273","status":"affected","versionType":"git"},{"version":"388d05f70f1ee0cac4a2068fd295072f1a44152a","lessThan":"0f000005da31f6947f843ce6b3e3a960540c6e00","status":"affected","versionType":"git"},{"version":"8a12f8836145ffe37e9c8733dce18c22fb668b66","lessThan":"41c44e1f3112d7265dae522c026399b2a42d19ef","status":"affected","versionType":"git"},{"version":"8a12f8836145ffe37e9c8733dce18c22fb668b66","lessThan":"2ad5692db72874f02b9ad551d26345437ea4f7f3","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/net/usb/hso.c"],"versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"4.19.189","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.115","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.33","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.11.17","lessThanOrEqual":"5.11.*","status":"unaffected","versionType":"semver"},{"version":"5.12.1","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","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":"4.19.187","versionEndExcluding":"4.19.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.112","versionEndExcluding":"5.4.115"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.30","versionEndExcluding":"5.10.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11.14","versionEndExcluding":"5.11.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.12.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554"},{"url":"https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e"},{"url":"https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1"},{"url":"https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725"},{"url":"https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e"},{"url":"https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273"},{"url":"https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00"},{"url":"https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef"},{"url":"https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3"}],"title":"net: 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