282 lines
15 KiB
JSON
282 lines
15 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-2026-68363",
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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": "2026-07-30T09:28:09.385Z",
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"datePublished": "2026-08-10T12:03:40.355Z",
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"dateUpdated": "2026-11-06T16:55:14.386Z"
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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": "2026-08-19T16:34:18.694Z"
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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\nwifi: ath9k: hif_usb: don't dereference hif_dev after re-arming firmware request\n\nath9k_hif_request_firmware() re-arms an asynchronous firmware load via\nrequest_firmware_nowait(), passing hif_dev as the completion context, and\nthen still dereferences hif_dev:\n\n\tdev_info(&hif_dev->udev->dev, \"ath9k_htc: Firmware %s requested\\n\",\n\t\t hif_dev->fw_name);\n\nThe re-armed callback ath9k_hif_usb_firmware_cb() runs on the \"events\"\nworkqueue and, when the firmware is missing, walks the retry chain into\nath9k_hif_usb_firmware_fail() -> complete_all(&hif_dev->fw_done). That\nreleases the wait_for_completion(&hif_dev->fw_done) in a concurrent\nath9k_hif_usb_disconnect(), which then kfree()s hif_dev. The trailing\ndev_info() in the frame that re-armed the request can therefore read freed\nmemory (hif_dev->udev, the first field of struct hif_device_usb):\n\n BUG: KASAN: slab-use-after-free in ath9k_hif_request_firmware\n Read of size 8 ... by task kworker/...\n ath9k_hif_request_firmware\n ath9k_hif_usb_firmware_cb drivers/net/wireless/ath/ath9k/hif_usb.c:1247\n request_firmware_work_func\n Allocated by ...:\n ath9k_hif_usb_probe drivers/net/wireless/ath/ath9k/hif_usb.c\n Freed by ...:\n ath9k_hif_usb_disconnect -> kfree drivers/net/wireless/ath/ath9k/hif_usb.c\n\nThe fw_done barrier only makes disconnect wait for the firmware chain to\n*terminate*; it does not protect the outer ath9k_hif_request_firmware()\nframe that re-armed the request and keeps touching hif_dev afterwards.\n\nDrop the post-request dev_info(): it is the only use of hif_dev after the\nasync request is armed, and it is purely informational (the dev_err() on the\nfailure path runs only when request_firmware_nowait() did not arm a callback,\nso hif_dev is still alive there).\n\nThis was first reported by syzbot as a single, non-reproduced crash that was\nlater auto-obsoleted, and was independently rediscovered by the reFuzz fuzzer,\nwhich produced a C reproducer (USB-gadget connect/disconnect of an ath9k_htc\ndevice whose firmware download fails). The vulnerable code is unchanged and\nstill present in v7.1-rc6, where the slab-use-after-free reproduces under KASAN\nonce the (sub-microsecond) race window is widened."
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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/net/wireless/ath/ath9k/hif_usb.c"
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],
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"versions": [
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{
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"version": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "47ed81aaa7f94d9808f4719e78a760c2ec1e6c86",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "48de0c6952192b0771fca468df4364d11ec74ad9",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "063497cc9f320ab71a7a937c3bc0a23e630aefe2",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "7f184ca38a90889f3f6665ff96748b95da39dbee",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "10b0ce629123a3737b4eda50188f73bb7be7b68b",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "48a69cedde7388294e4ea6fd804156cd62bc04fc",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "7c9046d92c4b9789c9d9d775e4fd5f34be64cb0a",
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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": "e904cf6fe23022cde4e0ea9d41601411a315a3dc",
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"lessThan": "dad9f96945d77ecd4708f730c06ef54dcd8cc057",
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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/net/wireless/ath/ath9k/hif_usb.c"
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],
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"versions": [
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{
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"version": "4.4",
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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": "4.4",
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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": "5.10.265",
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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": "5.15.216",
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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": "6.1.183",
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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": "6.6.148",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.101",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.42",
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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": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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": "4.4",
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"versionEndExcluding": "5.10.265"
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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": "4.4",
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"versionEndExcluding": "5.15.216"
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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": "4.4",
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"versionEndExcluding": "6.1.183"
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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": "4.4",
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"versionEndExcluding": "6.6.148"
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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": "4.4",
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"versionEndExcluding": "6.12.101"
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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": "4.4",
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"versionEndExcluding": "6.18.42"
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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": "4.4",
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"versionEndExcluding": "7.1.6"
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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": "4.4",
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"versionEndExcluding": "7.2"
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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/47ed81aaa7f94d9808f4719e78a760c2ec1e6c86"
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},
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{
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"url": "https://git.kernel.org/stable/c/48de0c6952192b0771fca468df4364d11ec74ad9"
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},
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{
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"url": "https://git.kernel.org/stable/c/063497cc9f320ab71a7a937c3bc0a23e630aefe2"
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},
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{
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"url": "https://git.kernel.org/stable/c/7f184ca38a90889f3f6665ff96748b95da39dbee"
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},
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{
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"url": "https://git.kernel.org/stable/c/10b0ce629123a3737b4eda50188f73bb7be7b68b"
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},
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{
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"url": "https://git.kernel.org/stable/c/48a69cedde7388294e4ea6fd804156cd62bc04fc"
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},
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{
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"url": "https://git.kernel.org/stable/c/7c9046d92c4b9789c9d9d775e4fd5f34be64cb0a"
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},
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{
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"url": "https://git.kernel.org/stable/c/dad9f96945d77ecd4708f730c06ef54dcd8cc057"
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}
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],
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"title": "wifi: ath9k: hif_usb: don't dereference hif_dev after re-arming firmware request",
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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-2026-68363",
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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": "2026-11-06T16:48:07.946520Z"
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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": "2026-11-06T16:55:14.386Z"
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}
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}
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]
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}
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} |