GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-74437 (GCVE-0-2026-74437)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:59 – Updated: 2026-08-17 05:19
VLAI
Title
media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work
Summary
In the Linux kernel, the following vulnerability has been resolved: media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work If a UVC camera has an asynchronous control, uvc_status_stop may be called from async_ctrl.work: uvc_ctrl_status_event_work() uvc_ctrl_status_event() uvc_ctrl_clear_handle() uvc_pm_put() uvc_status_put() uvc_status_stop() cancel_work_sync() This will cause a deadlock, since cancel_work_sync will wait for uvc_ctrl_status_event_work to complete before returning. Fix this by returning early from uvc_status_stop if we are currently in the work function. flush_status now remains false until uvc_status_start is called again, ensuring that uvc_ctrl_status_event_work won't resubmit the URB.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a32d9c41bdb86e09ce731aa5fd3add89ac2103a5 , < 3659deaf7bf690510899a73906b772740d94342c (git)
Affected: a32d9c41bdb86e09ce731aa5fd3add89ac2103a5 , < 7f6c5fe1633272c926361b73d83dfc6ae01b1504 (git)
Affected: a32d9c41bdb86e09ce731aa5fd3add89ac2103a5 , < 6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/uvc/uvc_status.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3659deaf7bf690510899a73906b772740d94342c",
              "status": "affected",
              "version": "a32d9c41bdb86e09ce731aa5fd3add89ac2103a5",
              "versionType": "git"
            },
            {
              "lessThan": "7f6c5fe1633272c926361b73d83dfc6ae01b1504",
              "status": "affected",
              "version": "a32d9c41bdb86e09ce731aa5fd3add89ac2103a5",
              "versionType": "git"
            },
            {
              "lessThan": "6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2",
              "status": "affected",
              "version": "a32d9c41bdb86e09ce731aa5fd3add89ac2103a5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/usb/uvc/uvc_status.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work\n\nIf a UVC camera has an asynchronous control, uvc_status_stop may be\ncalled from async_ctrl.work:\n\nuvc_ctrl_status_event_work()\n    uvc_ctrl_status_event()\n        uvc_ctrl_clear_handle()\n\t    uvc_pm_put()\n\t        uvc_status_put()\n\t\t    uvc_status_stop()\n\t\t        cancel_work_sync()\n\nThis will cause a deadlock, since cancel_work_sync will wait for\nuvc_ctrl_status_event_work to complete before returning.\n\nFix this by returning early from uvc_status_stop if we are currently in\nthe work function. flush_status now remains false until uvc_status_start\nis called again, ensuring that uvc_ctrl_status_event_work won\u0027t resubmit\nthe URB."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:19:23.869Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3659deaf7bf690510899a73906b772740d94342c"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f6c5fe1633272c926361b73d83dfc6ae01b1504"
        },
        {
          "url": "https://git.kernel.org/stable/c/6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2"
        }
      ],
      "title": "media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74437",
    "datePublished": "2026-08-15T05:59:35.297Z",
    "dateReserved": "2026-08-15T05:44:03.897Z",
    "dateUpdated": "2026-08-17T05:19:23.869Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74437",
      "date": "2026-09-05",
      "epss": "0.00155",
      "percentile": "0.04912"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74437\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:22:45.810\",\"lastModified\":\"2026-08-17T06:19:39.390\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work\\n\\nIf a UVC camera has an asynchronous control, uvc_status_stop may be\\ncalled from async_ctrl.work:\\n\\nuvc_ctrl_status_event_work()\\n    uvc_ctrl_status_event()\\n        uvc_ctrl_clear_handle()\\n\\t    uvc_pm_put()\\n\\t        uvc_status_put()\\n\\t\\t    uvc_status_stop()\\n\\t\\t        cancel_work_sync()\\n\\nThis will cause a deadlock, since cancel_work_sync will wait for\\nuvc_ctrl_status_event_work to complete before returning.\\n\\nFix this by returning early from uvc_status_stop if we are currently in\\nthe work function. flush_status now remains false until uvc_status_start\\nis called again, ensuring that uvc_ctrl_status_event_work won\u0027t resubmit\\nthe URB.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/media/usb/uvc/uvc_status.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5\",\"lessThan\":\"3659deaf7bf690510899a73906b772740d94342c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5\",\"lessThan\":\"7f6c5fe1633272c926361b73d83dfc6ae01b1504\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a32d9c41bdb86e09ce731aa5fd3add89ac2103a5\",\"lessThan\":\"6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/media/usb/uvc/uvc_status.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3659deaf7bf690510899a73906b772740d94342c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6d27f92c54ce28cfbd2a8a479a96d6f4a781b7d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7f6c5fe1633272c926361b73d83dfc6ae01b1504\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-19T10:01:28+00:00",
      "cve": "CVE-2026-74437",
      "id": "CVE-2026-74437",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_ctrl.work",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74437.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
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.