{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50732", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T12:20:40.331Z", "datePublished": "2025-12-24T12:22:51.933Z", "dateUpdated": "2026-08-05T08:59:31.519Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:59:31.519Z" }, "descriptions": [ { "lang": "en", "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." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c" ], "versions": [ { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "9c03db0ec84b7964a11b20706665c99a5fead332", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "a0df8d44b555ae09729d6533fd4532977563c7b9", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "288ada16a93aab5aa2ebea8190aafdb35b716854", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "daa8045a991363ccdae5615d170f35aa1135e7a7", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "b0aaec894a909c88117c8bda6c7c9b26cf7c744b", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "de174163c0d319ff06d622e79130a0017c8f5a6e", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6", "status": "affected", "versionType": "git" }, { "version": "8fc8598e61f6f384f3eaf1d9b09500c12af47b37", "lessThan": "bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c" ], "versions": [ { "version": "2.6.33", "status": "affected" }, { "version": "0", "lessThan": "2.6.33", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9c03db0ec84b7964a11b20706665c99a5fead332" }, { "url": "https://git.kernel.org/stable/c/fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd" }, { "url": "https://git.kernel.org/stable/c/a0df8d44b555ae09729d6533fd4532977563c7b9" }, { "url": "https://git.kernel.org/stable/c/288ada16a93aab5aa2ebea8190aafdb35b716854" }, { "url": "https://git.kernel.org/stable/c/daa8045a991363ccdae5615d170f35aa1135e7a7" }, { "url": "https://git.kernel.org/stable/c/b0aaec894a909c88117c8bda6c7c9b26cf7c744b" }, { "url": "https://git.kernel.org/stable/c/de174163c0d319ff06d622e79130a0017c8f5a6e" }, { "url": "https://git.kernel.org/stable/c/73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6" }, { "url": "https://git.kernel.org/stable/c/bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac" } ], "title": "staging: rtl8192u: Fix use after free in ieee80211_rx()", "x_generator": { "engine": "bippy-1.2.0" } } } }