{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "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": "2026-05-23T15:18:41.989Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:18:41.989Z" }, "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" }, { "version": "4.19.187", "lessThan": "4.19.189", "status": "affected", "versionType": "semver" }, { "version": "5.4.112", "lessThan": "5.4.115", "status": "affected", "versionType": "semver" }, { "version": "5.10.30", "lessThan": "5.10.33", "status": "affected", "versionType": "semver" }, { "version": "5.11.14", "lessThan": "5.11.17", "status": "affected", "versionType": "semver" } ] }, { "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: hso: fix NULL-deref on disconnect regression", 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