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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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              "version": "6.0.16",
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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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                  "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": "2026-09-16",
      "epss": "0.00409",
      "percentile": "0.34623"
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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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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.