{ "document":{ "aggregate_severity":{ "namespace":"https://nvd.nist.gov/vuln-metrics/cvss", "text":"LOW" }, "category":"csaf_vex", "csaf_version":"2.0", "distribution":{ "tlp":{ "label":"WHITE", "url":"https:/www.first.org/tlp/" } }, "lang":"en", "notes":[ { "text":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Fix accept list UAF during suspend\n\nhci_update_event_filter_sync() walks hdev->accept_list while sending a\nsynchronous HCI command for each remote-wakeup device. The suspend path\nholds hdev->req_lock, but accept-list updates are serialized by hdev->lock.\nConsequently, remove_device() can free the current list entry during the\ncontroller wait.\n\nThe following interleaving causes the use-after-free:\n\n hci_update_event_filter_sync() remove_device()\n fetch accept-list entry\n hci_set_event_filter_sync()\n wait for controller response hci_dev_lock()\n list_del()\n kfree()\n hci_dev_unlock()\n read the freed list.next\n\nKASAN reported:\n\n BUG: KASAN: slab-use-after-free in hci_suspend_sync+0x835/0x910\n Read of size 8 at addr ffff88810bec8440 by task kworker/0:1/10\n Workqueue: events vhci_suspend_work\n Call Trace:\n hci_suspend_sync+0x835/0x910\n hci_suspend_dev+0x182/0x450\n process_one_work+0x661/0x1090\n worker_thread+0x45b/0xd10\n\n Allocated by task 86:\n hci_bdaddr_list_add_with_flags+0x1a8/0x400\n add_device+0x381/0x820\n hci_sock_sendmsg+0x1033/0x1ea0\n\n Freed by task 91:\n kfree+0x131/0x3c0\n remove_device+0x429/0xb70\n hci_sock_sendmsg+0x1033/0x1ea0\n\nSnapshot the remote-wakeup addresses under hdev->lock. Release the lock\nbefore sending HCI commands. Clear the controller event filter before\nbuilding the snapshot, and skip allocation and the second list traversal\nwhen there are no matching entries. This preserves the original filter\nand scan-state updates without retaining an accept-list node across a\ncontroller wait.", "category":"general", "title":"Synopsis" } ], "publisher":null, "references":[ { "summary":"nvd cve", "category":"external", "url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80762" }, { "summary":"CVE-2026-80762 vex file", "category":"self", "url":"https://repo.openeuler.org/security/data/csaf/cve/2026/csaf-openeuler-cve-2026-80762.json" }, { "summary":"openEuler-SA-2026-4358", "category":"self", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4358" }, { "summary":"CVE-2026-80762", "category":"self", "url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-80762&packageName=kernel" } ], "title":"openEuler cve CVE-2026-80762", "tracking":{ "initial_release_date":"2026-10-22T10:24:42+08:00", "revision_history":[ { "date":"2026-10-22T10:24:42+08:00", "summary":"Initial", "number":"1.0.0" } ], "generator":{ "date":"2026-10-22T10:24:42+08:00", "engine":{ "name":"openEuler CSAF Tool V1.0" } }, "current_release_date":"2026-10-22T10:24:42+08:00", "id":"CVE-2026-80762", "version":"1.0.0", "status":"interim" } }, "product_tree":{ "branches":[ { "name":"openEuler", "category":"vendor", "branches":[ { "name":"openEuler", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"openEuler-24.03-LTS-SP1", "name":"openEuler-24.03-LTS-SP1" }, "name":"openEuler-24.03-LTS-SP1", "category":"product_version" } ], "category":"product_name" }, { "name":"x86_64", "branches":[ { "product":{ "product_identification_helper":{ "cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1" }, "product_id":"bpftool-6.6.0-145.1.28.165.oe2403sp1.x86_64.rpm", "name":"bpftool-6.6.0-145.1.28.165.oe2403sp1.x86_64.rpm" }, "name":"bpftool-6.6.0-145.1.28.165.oe2403sp1.x86_64.rpm", "category":"product_version" }, { "product":{ "product_identification_helper":{ 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hci_sync: Fix accept list UAF during suspend\n\nhci_update_event_filter_sync() walks hdev->accept_list while sending a\nsynchronous HCI command for each remote-wakeup device. The suspend path\nholds hdev->req_lock, but accept-list updates are serialized by hdev->lock.\nConsequently, remove_device() can free the current list entry during the\ncontroller wait.\n\nThe following interleaving causes the use-after-free:\n\n hci_update_event_filter_sync() remove_device()\n fetch accept-list entry\n hci_set_event_filter_sync()\n wait for controller response hci_dev_lock()\n list_del()\n kfree()\n hci_dev_unlock()\n read the freed list.next\n\nKASAN reported:\n\n BUG: KASAN: slab-use-after-free in hci_suspend_sync+0x835/0x910\n Read of size 8 at addr ffff88810bec8440 by task kworker/0:1/10\n Workqueue: events vhci_suspend_work\n Call Trace:\n hci_suspend_sync+0x835/0x910\n hci_suspend_dev+0x182/0x450\n process_one_work+0x661/0x1090\n worker_thread+0x45b/0xd10\n\n Allocated by task 86:\n hci_bdaddr_list_add_with_flags+0x1a8/0x400\n add_device+0x381/0x820\n hci_sock_sendmsg+0x1033/0x1ea0\n\n Freed by task 91:\n kfree+0x131/0x3c0\n remove_device+0x429/0xb70\n hci_sock_sendmsg+0x1033/0x1ea0\n\nSnapshot the remote-wakeup addresses under hdev->lock. Release the lock\nbefore sending HCI commands. Clear the controller event filter before\nbuilding the snapshot, and skip allocation and the second list traversal\nwhen there are no matching entries. This preserves the original filter\nand scan-state updates without retaining an accept-list node across a\ncontroller wait.", "category":"description", "title":"Vulnerability Description" } ], "product_status":{ "fixed":[ "openEuler-24.03-LTS-SP1:bpftool-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:bpftool-debuginfo-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-debuginfo-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-debugsource-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-devel-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-headers-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-source-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-tools-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-tools-debuginfo-6.6.0-145.1.28.165.oe2403sp1.x86_64", 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"openEuler-24.03-LTS-SP1:perf-6.6.0-145.1.28.165.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:perf-debuginfo-6.6.0-145.1.28.165.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:python3-perf-6.6.0-145.1.28.165.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:python3-perf-debuginfo-6.6.0-145.1.28.165.oe2403sp1.aarch64" ], "details":"kernel security update", "category":"vendor_fix", "url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4358" } ], "scores":[ { "cvss_v3":{ "baseSeverity":"LOW", "baseScore":3.9, "vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L", "version":"3.1" }, "products":[ "openEuler-24.03-LTS-SP1:bpftool-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:bpftool-debuginfo-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-6.6.0-145.1.28.165.oe2403sp1.x86_64", "openEuler-24.03-LTS-SP1:kernel-debuginfo-6.6.0-145.1.28.165.oe2403sp1.x86_64", 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"openEuler-24.03-LTS-SP1:perf-debuginfo-6.6.0-145.1.28.165.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:python3-perf-6.6.0-145.1.28.165.oe2403sp1.aarch64", "openEuler-24.03-LTS-SP1:python3-perf-debuginfo-6.6.0-145.1.28.165.oe2403sp1.aarch64" ] } ], "threats":[ { "details":"Low", "category":"impact" } ], "title":"CVE-2026-80762" } ] }