{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-99091", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.390Z", "datePublished": "2026-10-26T14:52:00.262Z", "dateUpdated": "2026-10-26T14:52:00.262Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-26T14:52:00.262Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: Fix status of pending commands flushed on power off\n\ncmd_complete_rsp() receives a struct cmd_lookup and, for a pending\ncommand that has no cmd_complete callback, falls through to\ncmd_status_rsp(cmd, data). cmd_status_rsp() reads data as a u8 *, so\nthe status sent comes from the first byte of match->sk's\nrepresentation, not from match->mgmt_status.\n\ncommit f53e1c9c726d (\"Bluetooth: MGMT: Fix possible crash on\nmgmt_index_removed\") changed the callers' data from &status to &match\nand updated the cmd_complete branch to match->mgmt_status, but left\nthe fall-through passing data unchanged.\n\nIn mgmt_index_removed() match->sk is NULL, so every such command is\nanswered with status 0x00 (Success) instead of\nMGMT_STATUS_INVALID_INDEX. In __mgmt_power_off() it is NULL too,\nunless a Set Powered command was pending: then settings_rsp() has\nstored that command's socket in match->sk, and the byte sent comes\nfrom the socket pointer. Either way the status the caller set,\nMGMT_STATUS_NOT_POWERED (or MGMT_STATUS_INVALID_INDEX when the device\nis being unregistered), is lost.\n\nPass the status the callers set.\n\nThis was seen on a QCA9377 laptop: bluetoothd's Start Discovery,\npending when the adapter was powered off, was answered with Command\nStatus 0x00 and no parameters, and bluetoothd 5.72 crashed on the\nzero-length success. BlueZ master has since added the length check\non that path (\"adapter: Fix crash on short start discovery reply\",\nBlueZ a734b06059cb), but userspace should still be told Not Powered,\nnot Success.\n\nTested on Ubuntu 7.0.0-31 with a virtual controller (hci_vhci):\npower off is held in HCI Write Scan Enable while a Start Discovery is\nsubmitted, and the flush answers it with status 0x00 before this\nchange and 0x0f (Not Powered) after." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/mgmt.c" ], "versions": [ { "version": "4883296505aa7e4863c6869b689afb6005633b23", "lessThan": "44ce36c5789ac84e65de1e98c32db9a5ac04ed47", "status": "affected", "versionType": "git" }, { "version": "f53e1c9c726d83092167f2226f32bd3b73f26c21", "lessThan": "7ed7e038b520cf0dfa12d61c2caddb95e2f6922d", "status": "affected", "versionType": "git" }, { "version": "f53e1c9c726d83092167f2226f32bd3b73f26c21", "lessThan": "ec227cddd13cd7ac9077d263a73473ac370a055d", "status": "affected", "versionType": "git" }, { "version": "f53e1c9c726d83092167f2226f32bd3b73f26c21", "lessThan": "07976405a3c71253e50533ee7b7a8b0dc16ab6ba", "status": "affected", "versionType": "git" }, { "version": "f53e1c9c726d83092167f2226f32bd3b73f26c21", "lessThan": "86ef0f58bdecdedb3a1240971c56d71b7e4ce3fc", "status": "affected", "versionType": "git" }, { "version": "19b40ca62607cef78369549d1af091f2fd558931", "status": "affected", "versionType": "git" }, { "version": "0cc47233af35fb5f10b5e6a027cb4ccd480caf9a", "status": "affected", "versionType": "git" }, { "version": "8c3f7943a29145d8a2d8e24893762f7673323eae", "status": "affected", "versionType": "git" }, { "version": "6.6.55", "lessThan": "6.6.160", "status": "affected", "versionType": "semver" }, { "version": "6.1.120", "lessThan": "6.2", "status": "affected", "versionType": "semver" }, { "version": "6.10.14", "lessThan": "6.11", "status": "affected", "versionType": "semver" }, { "version": "6.11.3", "lessThan": "6.12", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/mgmt.c" ], "versions": [ { "version": "6.12", "status": "affected" }, { "version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.11", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "6.6.55", "versionEndExcluding": "6.6.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.12.113" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.57" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/44ce36c5789ac84e65de1e98c32db9a5ac04ed47" }, { "url": "https://git.kernel.org/stable/c/7ed7e038b520cf0dfa12d61c2caddb95e2f6922d" }, { "url": "https://git.kernel.org/stable/c/ec227cddd13cd7ac9077d263a73473ac370a055d" }, { "url": "https://git.kernel.org/stable/c/07976405a3c71253e50533ee7b7a8b0dc16ab6ba" }, { "url": "https://git.kernel.org/stable/c/86ef0f58bdecdedb3a1240971c56d71b7e4ce3fc" } ], "title": "Bluetooth: MGMT: Fix status of pending commands flushed on power off", "x_generator": { "engine": "bippy-1.2.0" } } } }