143 lines
7.3 KiB
JSON
143 lines
7.3 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-2026-98294",
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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": "2026-09-25T10:25:14.336Z",
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"datePublished": "2026-10-06T08:45:53.338Z",
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"dateUpdated": "2026-10-19T09:17:05.335Z"
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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": "2026-10-19T09:17:05.335Z"
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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: Do not write to the serial port after it is closed\n\nhci_uart_close() closes the serdev port if HCI_QUIRK_NON_PERSISTENT_SETUP\nis set (for example, for the WCN399x family). A failed hci_dev_open_sync()\nfollowing a successful qca_setup() calls hdev->close() but not\nhdev->shutdown(), so the port is closed while power->vregs_on is left true.\nqca_serdev_remove() then passes its power->vregs_on test and calls\nqca_power_off(), which writes to the closed port unconditionally.\n\nSeen on a WCN3988 by unbinding the driver after a controller failure. The\ntrace below is from a 7.0.0 based kernel, where qca_power_off() was still\nnamed qca_power_shutdown():\n\n Unable to handle kernel NULL pointer dereference at virtual address\n 0000000000000038\n Call trace:\n tty_set_termios+0x50/0x238 (P)\n ttyport_set_baudrate+0x84/0xc0\n serdev_device_set_baudrate+0x24/0x40\n qca_power_shutdown+0x158/0x1fc [hci_uart]\n qca_serdev_remove+0x54/0x68 [hci_uart]\n serdev_drv_remove+0x1c/0x2c\n device_remove+0x4c/0x80\n device_release_driver_internal+0x1cc/0x224\n device_driver_detach+0x18/0x24\n unbind_store+0xb4/0xc0\n\nCheck HCI_UART_PROTO_READY, which hci_uart_close() clears in the same place\nit closes the port, before writing to it. The regulator disable is left\nunconditional so the controller is still powered down.\n\nThe dangling serport->tty that turns this into a use-after-free is\naddressed in a separate patch."
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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": "fa9ad876b8e0ebd2b4367ef1580f89be64ebd5d3",
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"lessThan": "a5414b0a9464b863733c8bd97493cb443a210ec4",
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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": "fa9ad876b8e0ebd2b4367ef1580f89be64ebd5d3",
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"lessThan": "15754e4ec47ac5d117c9609c34a49ed6980ac4a1",
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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": "fa9ad876b8e0ebd2b4367ef1580f89be64ebd5d3",
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"lessThan": "4e93c65f87825e1e012bce56615320aeb123815d",
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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": "4.19",
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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": "4.19",
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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": "6.18.54",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.8",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "4.19",
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"versionEndExcluding": "6.18.54"
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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": "4.19",
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"versionEndExcluding": "7.2.8"
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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": "4.19",
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"versionEndExcluding": "7.3"
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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/a5414b0a9464b863733c8bd97493cb443a210ec4"
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},
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{
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"url": "https://git.kernel.org/stable/c/15754e4ec47ac5d117c9609c34a49ed6980ac4a1"
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},
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{
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"url": "https://git.kernel.org/stable/c/4e93c65f87825e1e012bce56615320aeb123815d"
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}
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],
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"title": "Bluetooth: hci_qca: Do not write to the serial port after it is closed",
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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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}
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} |