235 lines
14 KiB
JSON
235 lines
14 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-2026-74411",
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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": "2026-08-15T05:44:03.892Z",
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"datePublished": "2026-08-15T05:59:18.696Z",
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"dateUpdated": "2026-10-16T19:05:44.122Z"
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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": "2026-08-17T05:46:54.903Z"
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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: rtw89: Correct data type for scan index to avoid infinite loop\n\nA kernel soft lockup was observed during Wi-Fi scanning on the 6GHz band.\nThe CPU becomes stuck in rtw89_hw_scan_add_chan_ax for over 20 seconds,\nleading to a system panic.\n\nRIP points to 0f b6 c3 (movzbl %bl, %eax), which zero-extends\nthe low 8 bits of RBX into RAX.\nRBX (the counter i) has reached a huge value: 0x137466a1.\n\n watchdog: BUG: soft lockup - CPU#2 stuck for 26s! [kworker/u16:4:6124]\n Workqueue: events_unbound cfg80211_wiphy_work [cfg80211]\n RIP: 0010:rtw89_hw_scan_add_chan_ax+0xb3/0x6e0 [rtw89_core]\n Code: a0 48 89 45 a8 44 89 6d 9c 44 89 75 98 eb 29 66 66 2e 0f 1f\n 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 c3 01\n <0f> b6 c3 41 3b 44 24 74 0f 83 0b 02 00 00 0f b6 c3 48 8d 14 80 49\n RSP: 0018:ffffcb48cbaa39f8 EFLAGS: 00000202\n RAX: 0000000000000005 RBX: 00000000137466a1 RCX: 0000000000000000\n RDX: ffff89ffc9d851a8 RSI: 0000000000004f0d RDI: 0000000096af0130\n RBP: ffffcb48cbaa3a60 R08: 0000000000000000 R09: ffff8a00b7502080\n R10: ffff8a00b75ff600 R11: 0000000000000000 R12: ffff89ffc7553870\n R13: ffff8a00b7ac8f19 R14: ffff8a00b75020d8 R15: ffff89ffc3d54d80\n FS: 0000000000000000(0000) GS:ffff8a014f962000(0000)\n knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 00007558d7f9f4c4 CR3: 0000000178040001 CR4: 00000000001706f0\n Call Trace:\n <TASK>\n rtw89_hw_scan_prep_chan_list_ax+0x8a/0x400 [rtw89_core]\n rtw89_hw_scan_start+0x546/0x8a0 [rtw89_core]\n ? rtw89_fw_h2c_default_cmac_tbl+0x13c/0x1f0 [rtw89_core]\n rtw89_ops_hw_scan+0xae/0x120 [rtw89_core]\n drv_hw_scan+0xbb/0x180 [mac80211]\n __ieee80211_start_scan+0x2fc/0x750 [mac80211]\n ieee80211_request_scan+0xe/0x20 [mac80211]\n ieee80211_scan+0x123/0x190 [mac80211]\n rdev_scan+0x40/0x110 [cfg80211]\n cfg80211_scan_6ghz+0x5a1/0xa30 [cfg80211]\n\nBy objdump with source:\n\n\tfor (i = 0; i < req->n_6ghz_params; i++) {\n 5fbc0:\t83 c3 01 \tadd $0x1,%ebx --> i++\n 5fbc3:\t0f b6 c3 \tmovzbl %bl,%eax --> get counter\n fbc6:\t41 3b 44 24 74 \tcmp 0x74(%r12),%eax\n\n * RBX: 00000000137466a1 -> %bl = a1 -> EAX = 000000a1 (161)"
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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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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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:A - The flaw is in the rtw89 WiFi driver scan path; an attacker on the same wireless segment can inject forged RNR/beacon frames to inflate n_6ghz_params above 255, triggering the vulnerable loop during cfg80211 6GHz split-scan processing.\nAC:L - An attacker can reliably flood the BSS cache with 256+ colocated 6GHz AP entries via crafted beacons and wait for routine background or split-scan 6GHz scans on rtw89 hardware; no race or rare configuration outside attacker control is required.\nPR:N - Exploitation requires only transmitting WiFi frames on the victim's RF segment to poison scan inputs; the attacker needs no local account, capability, or namespace privilege on the victim host.\nUI:N - The bug fires during automatic kernel/WiFi-stack scanning, including the split-scan 6GHz phase after legacy-band scans; victims need not perform any explicit action beyond normal powered-on operation.\nS:U - Impact is kernel soft lockup/panic and potential heap out-of-bounds access within kernel space; it does not cross VM, container, or IOMMU boundaries to another security authority.\nC:H - The u8 loop counter truncates at 256 while the index register grows unboundedly, causing out-of-bounds reads of scan_6ghz_params and attacker-influenced channel_idx values used to dereference req->channels[].\nI:H - The same out-of-bounds indexing drives writes (probe-request skb setup, firmware offload, heap list updates) using corrupted param data, enabling memory corruption beyond simple denial of service.\nA:H - Confirmed kernel soft lockup exceeding 26 seconds in rtw89_hw_scan_add_chan_ax with watchdog-forced panic, rendering the system unavailable until reboot."
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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/net/wireless/realtek/rtw89/fw.c"
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],
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"versions": [
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{
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"version": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
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"lessThan": "966fbed4b4463fbcb49c5becf3f86eae776861bd",
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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": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
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"lessThan": "05d46e30303275f21f13c951166d39c85df976d4",
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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": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
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"lessThan": "7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f",
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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": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
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"lessThan": "140fa699cfd0e18ab2f1497acd951fb3548610f5",
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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": "c6aa9a9c47252ac7b07ed6d10459027e2f2a2de0",
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"lessThan": "08fdcb529df6df3562dd2b0035f88dd5be8b3c68",
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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/realtek/rtw89/fw.c"
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],
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"versions": [
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{
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"version": "6.4",
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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": "6.4",
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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": "6.6.145",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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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": "6.4",
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"versionEndExcluding": "6.6.145"
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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": "6.4",
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"versionEndExcluding": "6.12.97"
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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": "6.4",
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"versionEndExcluding": "6.18.40"
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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": "6.4",
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"versionEndExcluding": "7.1.5"
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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": "6.4",
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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/966fbed4b4463fbcb49c5becf3f86eae776861bd"
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},
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{
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"url": "https://git.kernel.org/stable/c/05d46e30303275f21f13c951166d39c85df976d4"
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},
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{
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"url": "https://git.kernel.org/stable/c/7a1ab5fdcae896e20ca6d68fa0fbd2816cb7471f"
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},
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{
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"url": "https://git.kernel.org/stable/c/140fa699cfd0e18ab2f1497acd951fb3548610f5"
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},
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{
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"url": "https://git.kernel.org/stable/c/08fdcb529df6df3562dd2b0035f88dd5be8b3c68"
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}
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],
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"title": "wifi: rtw89: Correct data type for scan index to avoid infinite loop",
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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-2026-74411",
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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": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:56:08.056968Z"
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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": "2026-10-16T19:05:44.122Z"
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}
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}
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]
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}
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} |