285 lines
15 KiB
JSON
285 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-2022-50732",
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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": "2025-12-24T12:20:40.331Z",
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"datePublished": "2025-12-24T12:22:51.933Z",
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"dateUpdated": "2026-08-05T08:59:31.519Z"
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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": "2026-08-05T08:59:31.519Z"
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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\nstaging: rtl8192u: Fix use after free in ieee80211_rx()\n\nWe cannot dereference the \"skb\" pointer after calling\nieee80211_monitor_rx(), because it is a use after free."
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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 UAF is in the rtl8192u 802.11 RX path (USB ISR → tasklet → rtl8192_rx_nomal → ieee80211_rx) and is triggered by over-the-air WiFi frames while the adapter is in monitor mode, so the attacker must be on the same RF/LAN segment (WiFi frame injection = Adjacent).\nAC:L - Once the interface is in monitor mode, any received frame takes the ieee80211_monitor_rx → netif_rx(skb) path and then reads skb->len; an adjacent attacker can flood frames to force backlog drops (kfree_skb) or RPS cross-CPU reclaim, so the UAF is reliably attacker-driven with no uncontrollable race.\nPR:N - Frame delivery runs in the driver softirq/tasklet with no host authentication or capability check; the attacker needs no account on the victim and only needs to inject WiFi frames toward a monitor-mode RTL8192U interface.\nUI:N - In the worst reasonable deployment (WiFi monitoring/IDS/pentest with the dongle already in monitor mode), frames are processed automatically in kernel RX context with no further victim action such as opening a file or confirming a prompt.\nS:U - The sk_buff use-after-free corrupts host kernel heap state within the same OS security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - After netif_rx() hands off the skb it may be freed (backlog drop or RPS on another CPU) before the dangling skb->len read, enabling reclaim of the sk_buff slab object and disclosure of reused kernel memory, scored High per UAF guidance (same pattern as CVE-2023-53432).\nI:H - Use-after-free of a general-purpose sk_buff slab object is a classic heap-grooming primitive that can yield attacker-controlled object reuse and control-flow hijacking, so integrity impact is High per kernel UAF scoring guidance.\nA:H - Dereferencing a freed sk_buff can oops/panic the kernel, and an adjacent attacker can repeatedly inject frames to crash the host at will."
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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/staging/rtl8192u/ieee80211/ieee80211_rx.c"
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],
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"versions": [
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{
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"version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "9c03db0ec84b7964a11b20706665c99a5fead332",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "a0df8d44b555ae09729d6533fd4532977563c7b9",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "288ada16a93aab5aa2ebea8190aafdb35b716854",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "daa8045a991363ccdae5615d170f35aa1135e7a7",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "b0aaec894a909c88117c8bda6c7c9b26cf7c744b",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "de174163c0d319ff06d622e79130a0017c8f5a6e",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6",
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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": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37",
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"lessThan": "bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac",
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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/staging/rtl8192u/ieee80211/ieee80211_rx.c"
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],
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"versions": [
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{
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"version": "2.6.33",
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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": "2.6.33",
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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": "4.9.337",
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"lessThanOrEqual": "4.9.*",
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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": "4.14.303",
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"lessThanOrEqual": "4.14.*",
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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": "4.19.270",
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"lessThanOrEqual": "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": "5.4.229",
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"lessThanOrEqual": "5.4.*",
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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": "5.10.163",
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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": "5.15.86",
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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": "6.0.16",
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"lessThanOrEqual": "6.0.*",
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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": "6.1.2",
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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": "2.6.33",
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"versionEndExcluding": "4.9.337"
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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": "2.6.33",
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"versionEndExcluding": "4.14.303"
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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": "2.6.33",
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"versionEndExcluding": "4.19.270"
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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": "2.6.33",
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"versionEndExcluding": "5.4.229"
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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": "2.6.33",
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"versionEndExcluding": "5.10.163"
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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": "2.6.33",
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"versionEndExcluding": "5.15.86"
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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": "2.6.33",
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"versionEndExcluding": "6.0.16"
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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": "2.6.33",
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"versionEndExcluding": "6.1.2"
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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": "2.6.33",
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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/9c03db0ec84b7964a11b20706665c99a5fead332"
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},
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{
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"url": "https://git.kernel.org/stable/c/fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0df8d44b555ae09729d6533fd4532977563c7b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/288ada16a93aab5aa2ebea8190aafdb35b716854"
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},
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{
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"url": "https://git.kernel.org/stable/c/daa8045a991363ccdae5615d170f35aa1135e7a7"
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},
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{
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"url": "https://git.kernel.org/stable/c/b0aaec894a909c88117c8bda6c7c9b26cf7c744b"
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},
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{
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"url": "https://git.kernel.org/stable/c/de174163c0d319ff06d622e79130a0017c8f5a6e"
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},
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{
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"url": "https://git.kernel.org/stable/c/73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6"
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},
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{
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"url": "https://git.kernel.org/stable/c/bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac"
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}
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],
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"title": "staging: rtl8192u: Fix use after free in ieee80211_rx()",
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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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} |