180 lines
9.8 KiB
JSON
180 lines
9.8 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-2026-80943",
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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": "2026-08-26T14:34:25.803Z",
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"datePublished": "2026-09-11T19:42:15.341Z",
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"dateUpdated": "2026-10-19T08:45:27.392Z"
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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": "2026-10-19T08:45:27.392Z"
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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: rtlwifi: rtl8192du: check QoS TID before indexing tids\n\nrtl92du_tx_fill_desc() uses ieee80211_get_tid() to read the QoS TID\nfrom the 802.11 header and then uses it as an index into\nsta_entry->tids[]. ieee80211_get_tid() returns the low 4-bit QoS TID\nvalue, so the result can be in the range 0..15.\n\nrtlwifi only allocates MAX_TID_COUNT entries for sta_entry->tids[], and\nMAX_TID_COUNT is 9. A QoS TID greater than 8 therefore indexes past the\naggregation state array. Keep the default RTL_AGG_STOP state for\nout-of-range TIDs, matching rtl92cu_tx_fill_desc().\n\nThis issue was detected by our static analysis tool and confirmed by\nmanual audit. UBSAN validation for the same bug pattern reports an\narray-index-out-of-bounds access with index 10 for type\n'rtl_tid_data [9]'."
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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:L/I:L/A:H",
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"baseScore": 7.6,
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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 - An adjacent Wi-Fi peer can trigger automatic open-mesh peering responses; ieee80211_get_tid() treats the self-protected action category 15 as a QoS TID, so rtl92du_tx_fill_desc() is reached over the wireless link.\nAC:L - A valid peering-open frame deterministically allocates an authorized station and transmits a category-15 action frame into the vulnerable TX descriptor path; no race or other condition outside the attacker's control is required.\nPR:N - Open 802.11s mesh accepts self-protected peering frames from unknown peers and automatically inserts an authorized station, so no credentials or local capabilities are required.\nUI:N - Once the rtl8192du interface is operating as a mesh point, mac80211 processes the attacker's frame and transmits the peering response without further victim action.\nS:U - The out-of-bounds access and any resulting crash remain in the host kernel and wireless device security authority, without crossing a VM, IOMMU, or sandbox boundary.\nC:L - The bug reads one agg_state byte at a TID-selected offset; TIDs 9-15 index past tids[9] into adjacent heap, yielding only a tightly bounded heap-state oracle rather than arbitrary disclosure.\nI:L - The access does not overwrite kernel memory or provide an arbitrary-write primitive; the fetched byte can only influence AMPDU/RTS TX descriptor fields, giving limited transmission integrity impact.\nA:H - UBSAN trap or panic-on-warning kernels can oops or panic on the deterministic bounds violation, and an adjacent peer can retrigger it after recovery."
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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/rtlwifi/rtl8192du/trx.c"
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],
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"versions": [
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{
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"version": "8321424134a400a5e3eb39f9acca6bc6946ff447",
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"lessThan": "6e327f14e1c43e175bf530f9165b2cadff308553",
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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": "8321424134a400a5e3eb39f9acca6bc6946ff447",
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"lessThan": "0c0b374e12d52af23ca741728db31091677cf9dc",
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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": "8321424134a400a5e3eb39f9acca6bc6946ff447",
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"lessThan": "42785f7e8d31540e6172bbcf08a7cc3cae1086f8",
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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": "8321424134a400a5e3eb39f9acca6bc6946ff447",
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"lessThan": "ed4f05d9f2f42fd866f55108db8123eefcc5fb33",
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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/rtlwifi/rtl8192du/trx.c"
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],
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"versions": [
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{
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"version": "6.11",
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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": "6.11",
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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": "6.12.109",
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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": "6.18.50",
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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": "7.2.4",
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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": "6.11",
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"versionEndExcluding": "6.12.109"
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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": "6.11",
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"versionEndExcluding": "6.18.50"
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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": "6.11",
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"versionEndExcluding": "7.2.4"
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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": "6.11",
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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/6e327f14e1c43e175bf530f9165b2cadff308553"
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},
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{
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"url": "https://git.kernel.org/stable/c/0c0b374e12d52af23ca741728db31091677cf9dc"
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},
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{
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"url": "https://git.kernel.org/stable/c/42785f7e8d31540e6172bbcf08a7cc3cae1086f8"
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},
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{
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"url": "https://git.kernel.org/stable/c/ed4f05d9f2f42fd866f55108db8123eefcc5fb33"
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}
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],
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"title": "wifi: rtlwifi: rtl8192du: check QoS TID before indexing tids",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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} |