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CVE-2022-49315 (GCVE-0-2022-49315)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2026-05-11 18:57
VLAI
Title
drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()
Summary
In the Linux kernel, the following vulnerability has been resolved: drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop() There is a deadlock in rtllib_beacons_stop(), which is shown below: (Thread 1) | (Thread 2) | rtllib_send_beacon() rtllib_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (wait a time) ... | rtllib_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (wait timer to stop) | ... We hold ieee->beacon_lock in position (1) of thread 1 and use del_timer_sync() to wait timer to stop, but timer handler also need ieee->beacon_lock in position (2) of thread 2. As a result, rtllib_beacons_stop() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irqsave(), which could let timer handler to obtain the needed lock.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:44 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 4681129fda9e8555392eaaadb239ec6a6e2b3e12 (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 381045dc64d23a2229c47c5524c06bfc33d34446 (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 08bacf871c019163ccd1389d0bc957a43324967a (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 64b05fa212c7e4d057676e8b7e7120c6eb2f615b (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 0f69d7d5e918aa43423d86bd17ddb11b1b5e8ada (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < fef451f0fbbe85dbd2962b18379d02e2965610db (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 46c861009bf437a18417df24cea0d181741b7d72 (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < ffd4c4d5293e4985092ea45ba21cad9326e2e434 (git)
Affected: 94a799425eee8225a1e3fbe5f473d2ef04002577 , < 9b6bdbd9337de3917945847bde262a34a87a6303 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 4.9.318 , ≤ 4.9.* (semver)
Unaffected: 4.14.283 , ≤ 4.14.* (semver)
Unaffected: 4.19.247 , ≤ 4.19.* (semver)
Unaffected: 5.4.198 , ≤ 5.4.* (semver)
Unaffected: 5.10.122 , ≤ 5.10.* (semver)
Unaffected: 5.15.47 , ≤ 5.15.* (semver)
Unaffected: 5.17.15 , ≤ 5.17.* (semver)
Unaffected: 5.18.4 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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                    "matchCriteriaId": "FA6D643C-6D6A-4821-8A8D-B5776B8F0103",
                    "versionEndExcluding": "5.18.4",
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                    "vulnerable": true
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                "negate": false,
                "operator": "OR"
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            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()\n\nThere is a deadlock in rtllib_beacons_stop(), which is shown\nbelow:\n\n   (Thread 1)              |      (Thread 2)\n                           | rtllib_send_beacon()\nrtllib_beacons_stop()      |  mod_timer()\n spin_lock_irqsave() //(1) |  (wait a time)\n ...                       | rtllib_send_beacon_cb()\n del_timer_sync()          |  spin_lock_irqsave() //(2)\n (wait timer to stop)      |  ...\n\nWe hold ieee-\u003ebeacon_lock in position (1) of thread 1 and\nuse del_timer_sync() to wait timer to stop, but timer handler\nalso need ieee-\u003ebeacon_lock in position (2) of thread 2.\nAs a result, rtllib_beacons_stop() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_irqsave(), which could let timer handler to obtain\nthe needed lock."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: staging: rtl8192e: Corregir bloqueo en rtllib_beacons_stop() Hay un bloqueo en rtllib_beacons_stop(), que se muestra a continuaci\u00f3n: (Hilo 1) | (Hilo 2) | rtllib_send_beacon() rtllib_beacons_stop() | mod_timer() spin_lock_irqsave() //(1) | (esperar un tiempo) ... | rtllib_send_beacon_cb() del_timer_sync() | spin_lock_irqsave() //(2) (esperar que el temporizador se detenga) | ... Mantenemos ieee-\u0026gt;beacon_lock en la posici\u00f3n (1) del hilo 1 y usamos del_timer_sync() para esperar a que el temporizador se detenga, pero el controlador del temporizador tambi\u00e9n necesita ieee-\u0026gt;beacon_lock en la posici\u00f3n (2) del hilo 2. Como resultado, rtllib_beacons_stop() se bloquear\u00e1 para siempre. Este parche extrae del_timer_sync() de la protecci\u00f3n de spin_lock_irqsave(), lo que podr\u00eda permitir que el controlador del temporizador obtenga el bloqueo necesario."
          }
        ],
        "id": "CVE-2022-49315",
        "lastModified": "2026-06-17T05:17:41.500",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
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                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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        "published": "2025-02-26T07:01:08.373",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
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                "value": "CWE-667"
              }
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            "type": "Primary"
          },
          {
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              {
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                "value": "CWE-667"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
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    },
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      "current_release_date": "2026-06-29T21:03:19+00:00",
      "cve": "CVE-2022-49315",
      "id": "CVE-2022-49315",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "246",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49315.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:27:53Z",
      "cve": "CVE-2022-49315",
      "id": "CVE-2022-49315",
      "initial_release_date": "2025-02-27T03:08:54Z",
      "product_status:known_affected": "334",
      "product_status:known_not_affected": "361",
      "product_status:recommended": "293",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49315",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49315.json",
      "version": "51"
    },
    "vulnrichment": {
      "containers": {
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              {
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                  "attackVector": "LOCAL",
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                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2022-49315",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
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                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T19:44:03.346443Z",
                    "version": "2.0.3"
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                  "type": "ssvc"
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              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-667",
                    "description": "CWE-667 Improper Locking",
                    "lang": "en",
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                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T16:14:33.138Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
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            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/staging/rtl8192e/rtllib_softmac.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/staging/rtl8192e/rtllib_softmac.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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                  "status": "affected",
                  "version": "3.2"
                },
                {
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                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
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                  "status": "unaffected",
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                  "status": "unaffected",
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                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "4.19.247",
                  "versionType": "semver"
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                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.198",
                  "versionType": "semver"
                },
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                  "status": "unaffected",
                  "version": "5.10.122",
                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "5.15.47",
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                  "version": "5.18.4",
                  "versionType": "semver"
                },
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                  "status": "unaffected",
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                  "versionType": "original_commit_for_fix"
                }
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                    },
                    {
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                      "vulnerable": true
                    },
                    {
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            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()\n\nThere is a deadlock in rtllib_beacons_stop(), which is shown\nbelow:\n\n   (Thread 1)              |      (Thread 2)\n                           | rtllib_send_beacon()\nrtllib_beacons_stop()      |  mod_timer()\n spin_lock_irqsave() //(1) |  (wait a time)\n ...                       | rtllib_send_beacon_cb()\n del_timer_sync()          |  spin_lock_irqsave() //(2)\n (wait timer to stop)      |  ...\n\nWe hold ieee-\u003ebeacon_lock in position (1) of thread 1 and\nuse del_timer_sync() to wait timer to stop, but timer handler\nalso need ieee-\u003ebeacon_lock in position (2) of thread 2.\nAs a result, rtllib_beacons_stop() will block forever.\n\nThis patch extracts del_timer_sync() from the protection of\nspin_lock_irqsave(), which could let timer handler to obtain\nthe needed lock."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T18:57:19.092Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
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            },
            {
              "url": "https://git.kernel.org/stable/c/381045dc64d23a2229c47c5524c06bfc33d34446"
            },
            {
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            {
              "url": "https://git.kernel.org/stable/c/9b6bdbd9337de3917945847bde262a34a87a6303"
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          ],
          "title": "drivers: staging: rtl8192e: Fix deadlock in rtllib_beacons_stop()",
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        "assignerShortName": "Linux",
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        "datePublished": "2025-02-26T02:10:43.082Z",
        "dateReserved": "2025-02-26T02:08:31.536Z",
        "dateUpdated": "2026-05-11T18:57:19.092Z",
        "state": "PUBLISHED"
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    }
  }
}



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Taxonomy of the tags.





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.