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CVE-2022-50732 (GCVE-0-2022-50732)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:22 – Updated: 2026-08-05 08:59
VLAI
Title
staging: rtl8192u: Fix use after free in ieee80211_rx()
Summary
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8192u: Fix use after free in ieee80211_rx() We cannot dereference the "skb" pointer after calling ieee80211_monitor_rx(), because it is a use after free.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < 9c03db0ec84b7964a11b20706665c99a5fead332 (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < a0df8d44b555ae09729d6533fd4532977563c7b9 (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < 288ada16a93aab5aa2ebea8190aafdb35b716854 (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < daa8045a991363ccdae5615d170f35aa1135e7a7 (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < b0aaec894a909c88117c8bda6c7c9b26cf7c744b (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < de174163c0d319ff06d622e79130a0017c8f5a6e (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < 73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6 (git)
Affected: 8fc8598e61f6f384f3eaf1d9b09500c12af47b37 , < bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.33
Unaffected: 0 , < 2.6.33 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c"
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              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
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        }
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      "cpeApplicability": [
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                  "versionStartIncluding": "2.6.33",
                  "vulnerable": true
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                {
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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      ],
      "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": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The UAF is in the rtl8192u 802.11 RX path (USB ISR \u2192 tasklet \u2192 rtl8192_rx_nomal \u2192 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 \u2192 netif_rx(skb) path and then reads skb-\u003elen; 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-\u003elen 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."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:59:31.519Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/9c03db0ec84b7964a11b20706665c99a5fead332"
        },
        {
          "url": "https://git.kernel.org/stable/c/fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd"
        },
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          "url": "https://git.kernel.org/stable/c/a0df8d44b555ae09729d6533fd4532977563c7b9"
        },
        {
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        },
        {
          "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"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50732",
    "datePublished": "2025-12-24T12:22:51.933Z",
    "dateReserved": "2025-12-24T12:20:40.331Z",
    "dateUpdated": "2026-08-05T08:59:31.519Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "date": "2026-09-15",
      "epss": "0.00409",
      "percentile": "0.34456"
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free.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"9c03db0ec84b7964a11b20706665c99a5fead332\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"a0df8d44b555ae09729d6533fd4532977563c7b9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"288ada16a93aab5aa2ebea8190aafdb35b716854\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"daa8045a991363ccdae5615d170f35aa1135e7a7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"b0aaec894a909c88117c8bda6c7c9b26cf7c744b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"de174163c0d319ff06d622e79130a0017c8f5a6e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8fc8598e61f6f384f3eaf1d9b09500c12af47b37\",\"lessThan\":\"bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.33\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.33\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.337\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.303\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.270\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.229\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.163\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.86\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0.16\",\"lessThanOrEqual\":\"6.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.2\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"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\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/288ada16a93aab5aa2ebea8190aafdb35b716854\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/73df1172bbcc8d45cd28e3b1a9ca2edb2f9f7ce6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9c03db0ec84b7964a11b20706665c99a5fead332\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a0df8d44b555ae09729d6533fd4532977563c7b9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b0aaec894a909c88117c8bda6c7c9b26cf7c744b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bcc5e2dcf09089b337b76fc1a589f6ff95ca19ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/daa8045a991363ccdae5615d170f35aa1135e7a7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/de174163c0d319ff06d622e79130a0017c8f5a6e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fdc62d31d50e4ce5d8f363fcb8299ba0e00ee6fd\",\"source\":\"416baaa9-dc9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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-13T19:08:40+00:00",
      "cve": "CVE-2022-50732",
      "id": "CVE-2022-50732",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Kernel: Arbitrary code execution in rtl8192u Wi-Fi driver via use-after-free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50732.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:19:13Z",
      "cve": "CVE-2022-50732",
      "id": "CVE-2022-50732",
      "initial_release_date": "2025-12-25T01:04:42Z",
      "product_status:known_affected": "475",
      "product_status:known_not_affected": "258",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50732",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50732.json",
      "version": "26"
    }
  }
}



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Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.