214 lines
12 KiB
JSON
214 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2022-48878",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-16T11:38:08.922Z",
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"datePublished": "2024-08-21T06:10:09.418Z",
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"dateUpdated": "2026-08-05T08:52:46.199Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:52:46.199Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_qca: Fix driver shutdown on closed serdev\n\nThe driver shutdown callback (which sends EDL_SOC_RESET to the device\nover serdev) should not be invoked when HCI device is not open (e.g. if\nhci_dev_open_sync() failed), because the serdev and its TTY are not open\neither. Also skip this step if device is powered off\n(qca_power_shutdown()).\n\nThe shutdown callback causes use-after-free during system reboot with\nQualcomm Atheros Bluetooth:\n\n Unable to handle kernel paging request at virtual address\n 0072662f67726fd7\n ...\n CPU: 6 PID: 1 Comm: systemd-shutdow Tainted: G W\n 6.1.0-rt5-00325-g8a5f56bcfcca #8\n Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n Call trace:\n tty_driver_flush_buffer+0x4/0x30\n serdev_device_write_flush+0x24/0x34\n qca_serdev_shutdown+0x80/0x130 [hci_uart]\n device_shutdown+0x15c/0x260\n kernel_restart+0x48/0xac\n\nKASAN report:\n\n BUG: KASAN: use-after-free in tty_driver_flush_buffer+0x1c/0x50\n Read of size 8 at addr ffff16270c2e0018 by task systemd-shutdow/1\n\n CPU: 7 PID: 1 Comm: systemd-shutdow Not tainted\n 6.1.0-next-20221220-00014-gb85aaf97fb01-dirty #28\n Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n Call trace:\n dump_backtrace.part.0+0xdc/0xf0\n show_stack+0x18/0x30\n dump_stack_lvl+0x68/0x84\n print_report+0x188/0x488\n kasan_report+0xa4/0xf0\n __asan_load8+0x80/0xac\n tty_driver_flush_buffer+0x1c/0x50\n ttyport_write_flush+0x34/0x44\n serdev_device_write_flush+0x48/0x60\n qca_serdev_shutdown+0x124/0x274\n device_shutdown+0x1e8/0x350\n kernel_restart+0x48/0xb0\n __do_sys_reboot+0x244/0x2d0\n __arm64_sys_reboot+0x54/0x70\n invoke_syscall+0x60/0x190\n el0_svc_common.constprop.0+0x7c/0x160\n do_el0_svc+0x44/0xf0\n el0_svc+0x2c/0x6c\n el0t_64_sync_handler+0xbc/0x140\n el0t_64_sync+0x190/0x194"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is reached through the local reboot/shutdown path (reboot syscall → device_shutdown → qca_serdev_shutdown), not via Bluetooth radio frames or any network protocol.\nAC:L - An attacker can reliably create the vulnerable state (HCI not running / BT powered off on QCA6390 with NON_PERSISTENT_SETUP) and then reboot; no uncontrolled race or rare config is required.\nPR:L - The HCI-closed precondition is common without elevated rights, and on typical desktop/mobile deployments a basic local seat user can initiate reboot (e.g. via polkit/logind) without needing real root in the init user namespace beyond that local account.\nUI:N - The attacker can arrange the BT-off state and initiate reboot themselves; no separate victim action is required.\nS:U - This is a kernel UAF within the host kernel's authority, with no VM escape, IOMMU bypass, or other cross-boundary impact.\nC:H - KASAN confirms a use-after-free of the tty_struct; control of the freed object enables arbitrary kernel read primitives per UAF exploitation.\nI:H - The UAF is on tty->ops before an indirect call to flush_buffer, so heap spray can hijack control flow for arbitrary write/code execution.\nA:H - The demonstrated crash is a kernel oops/paging fault during shutdown (use-after-free), which is a full availability impact."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/bluetooth/hci_qca.c"
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],
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"versions": [
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{
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"version": "7e7bbddd029b644f00f0ffbfbc485ed71977d0d5",
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"lessThan": "e84ec6e25df9bb0968599e92eacedaf3a0a5b587",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7e7bbddd029b644f00f0ffbfbc485ed71977d0d5",
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"lessThan": "908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7e7bbddd029b644f00f0ffbfbc485ed71977d0d5",
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"lessThan": "ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7e7bbddd029b644f00f0ffbfbc485ed71977d0d5",
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"lessThan": "272970be3dabd24cbe50e393ffee8f04aec3b9a8",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/bluetooth/hci_qca.c"
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],
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"versions": [
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{
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"version": "5.8",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.8",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.165",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.90",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.8",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "5.10.165"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "5.15.90"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "6.1.8"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.8",
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"versionEndExcluding": "6.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/e84ec6e25df9bb0968599e92eacedaf3a0a5b587"
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},
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{
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"url": "https://git.kernel.org/stable/c/908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3"
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},
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{
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"url": "https://git.kernel.org/stable/c/ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447"
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},
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{
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"url": "https://git.kernel.org/stable/c/272970be3dabd24cbe50e393ffee8f04aec3b9a8"
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}
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],
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"title": "Bluetooth: hci_qca: Fix driver shutdown on closed serdev",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-48878",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:05:06.349695Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-12T17:32:53.074Z"
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}
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}
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]
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}
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} |