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CVE-2024-27052 (GCVE-0-2024-27052)

Vulnerability from cvelistv5 – Published: 2024-05-01 12:54 – Updated: 2026-08-05 11:29
VLAI
Title
wifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work The workqueue might still be running, when the driver is stopped. To avoid a use-after-free, call cancel_work_sync() in rtl8xxxu_stop().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-13 15:54 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < dddedfa3b29a63c2ca4336663806a6128b8545b4 (git)
Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < ac512507ac89c01ed6cd4ca53032f52cdb23ea59 (git)
Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < 3518cea837de4d106efa84ddac18a07b6de1384e (git)
Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < 156012667b85ca7305cb363790d3ae8519a6f41e (git)
Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < 7059cdb69f8e1a2707dd1e2f363348b507ed7707 (git)
Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < 58fe3bbddfec10c6b216096d8c0e517cd8463e3a (git)
Affected: e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 , < 1213acb478a7181cd73eeaf00db430f1e45b1361 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
linux linux_kernel Affected: 5.5
    cpe:2.3:o:linux:linux_kernel:5.5:*:*:*:*:*:*:*
Create a notification for this product.
linux linux_kernel Affected: e542e66b7c2e , < 58fe3bbddfec (custom)
    cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
Create a notification for this product.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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                    "role": "CISA Coordinator",
                    "timestamp": "2024-05-13T15:54:30.303932Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-05-13T15:54:25.538Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "dddedfa3b29a63c2ca4336663806a6128b8545b4",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                },
                {
                  "lessThan": "ac512507ac89c01ed6cd4ca53032f52cdb23ea59",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                },
                {
                  "lessThan": "3518cea837de4d106efa84ddac18a07b6de1384e",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                },
                {
                  "lessThan": "156012667b85ca7305cb363790d3ae8519a6f41e",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                },
                {
                  "lessThan": "7059cdb69f8e1a2707dd1e2f363348b507ed7707",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                },
                {
                  "lessThan": "58fe3bbddfec10c6b216096d8c0e517cd8463e3a",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                },
                {
                  "lessThan": "1213acb478a7181cd73eeaf00db430f1e45b1361",
                  "status": "affected",
                  "version": "e542e66b7c2ee2adeefdbb7f259f2f60cadf2819",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.5"
                },
                {
                  "lessThan": "5.5",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.214",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.153",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.83",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.23",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.7.*",
                  "status": "unaffected",
                  "version": "6.7.11",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.8.*",
                  "status": "unaffected",
                  "version": "6.8.2",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.9",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.214",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.153",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.83",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.23",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.7.11",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8.2",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.9",
                      "versionStartIncluding": "5.5",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work\n\nThe workqueue might still be running, when the driver is stopped. To\navoid a use-after-free, call cancel_work_sync() in rtl8xxxu_stop()."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The exploitable window is opened by a local action that stops the device (`ip link set down`, suspend, rfkill, driver unbind) \u2014 a remote or adjacent Wi-Fi attacker can queue `c2hcmd_work` but cannot cause `rtl8xxxu_stop()`/`ieee80211_free_hw()` to run. This matches the AV:L scoring of the directly analogous `rtl8187_stop()` teardown UAF (CVE-2025-38604).\nAC:L - The attacker controls both sides of the race: Wi-Fi/BT-coex activity keeps C2H events and RA reports flowing so `schedule_work(\u0026priv-\u003ec2hcmd_work)` fires continuously, and the attacker chooses the exact moment to trigger the stop/unbind, so the window can be hit repeatedly until won.\nPR:L - An ordinary local user in a normal desktop/embedded session can reach the teardown path via logind-mediated suspend or rfkill, and no capability is needed to generate the Wi-Fi traffic that keeps the work queued; consistent with PR:L used across the driver-teardown UAF class.\nUI:N - The attacker performs both the traffic generation and the interface stop themselves; no separate victim has to open a file, mount anything, or take any action.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The freed `rtl8xxxu_priv` slab object can be reclaimed and groomed by the attacker, and the work callback reads through it (`priv-\u003efops`, `priv-\u003eudev-\u003edev`, `priv-\u003ec2hcmd_queue`), yielding a use-after-free read primitive that can disclose arbitrary kernel memory.\nI:H - The stale work item writes into the freed object (skb dequeue/list manipulation on `c2hcmd_queue`, updates to `priv-\u003era_report` and `priv-\u003ebt_coex`), and the workqueue core manipulates the freed embedded `work_struct`, giving a controlled-write primitive on reclaimed heap memory that is leverageable for control-flow hijack.\nA:H - Even unexploited, the use-after-free reliably produces a kernel oops or panic when the work runs against freed memory, and it can be retriggered on every device stop."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:29:14.215Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/dddedfa3b29a63c2ca4336663806a6128b8545b4"
            },
            {
              "url": "https://git.kernel.org/stable/c/ac512507ac89c01ed6cd4ca53032f52cdb23ea59"
            },
            {
              "url": "https://git.kernel.org/stable/c/3518cea837de4d106efa84ddac18a07b6de1384e"
            },
            {
              "url": "https://git.kernel.org/stable/c/156012667b85ca7305cb363790d3ae8519a6f41e"
            },
            {
              "url": "https://git.kernel.org/stable/c/7059cdb69f8e1a2707dd1e2f363348b507ed7707"
            },
            {
              "url": "https://git.kernel.org/stable/c/58fe3bbddfec10c6b216096d8c0e517cd8463e3a"
            },
            {
              "url": "https://git.kernel.org/stable/c/1213acb478a7181cd73eeaf00db430f1e45b1361"
            }
          ],
          "title": "wifi: rtl8xxxu: add cancel_work_sync() for c2hcmd_work",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-27052",
        "datePublished": "2024-05-01T12:54:42.547Z",
        "dateReserved": "2024-02-19T14:20:24.214Z",
        "dateUpdated": "2026-08-05T11:29:14.215Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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

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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.