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CVE-2022-49686 (GCVE-0-2022-49686)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2026-05-11 19:04
VLAI
Title
usb: gadget: uvc: fix list double add in uvcg_video_pump
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: fix list double add in uvcg_video_pump A panic can occur if the endpoint becomes disabled and the uvcg_video_pump adds the request back to the req_free list after it has already been queued to the endpoint. The endpoint complete will add the request back to the req_free list. Invalidate the local request handle once it's been queued. <6>[ 246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0) <3>[ 246.797078][ T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90. <6>[ 246.797213][ T26] ------------[ cut here ]------------ <2>[ 246.797224][ T26] kernel BUG at lib/list_debug.c:31! <6>[ 246.807073][ T26] Call trace: <6>[ 246.807180][ T26] uvcg_video_pump+0x364/0x38c <6>[ 246.807366][ T26] process_one_work+0x2a4/0x544 <6>[ 246.807394][ T26] worker_thread+0x350/0x784 <6>[ 246.807442][ T26] kthread+0x2ac/0x320
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2 , < d95ac8b920de1d39525fadc408ce675697626ca6 (git)
Affected: f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2 , < 96163f835e65f8c9897487fac965819f0651d671 (git)
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Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.18.8 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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{
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/uvc_video.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: uvc: fix list double add in uvcg_video_pump\n\nA panic can occur if the endpoint becomes disabled and the\nuvcg_video_pump adds the request back to the req_free list after it has\nalready been queued to the endpoint. The endpoint complete will add the\nrequest back to the req_free list. Invalidate the local request handle\nonce it\u0027s been queued.\n\n\u003c6\u003e[  246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0)\n\u003c3\u003e[  246.797078][   T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90.\n\u003c6\u003e[  246.797213][   T26] ------------[ cut here ]------------\n\u003c2\u003e[  246.797224][   T26] kernel BUG at lib/list_debug.c:31!\n\u003c6\u003e[  246.807073][   T26] Call trace:\n\u003c6\u003e[  246.807180][   T26]  uvcg_video_pump+0x364/0x38c\n\u003c6\u003e[  246.807366][   T26]  process_one_work+0x2a4/0x544\n\u003c6\u003e[  246.807394][   T26]  worker_thread+0x350/0x784\n\u003c6\u003e[  246.807442][   T26]  kthread+0x2ac/0x320"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49686",
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    "dateReserved": "2025-02-26T02:21:30.441Z",
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    "state": "PUBLISHED"
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Invalidate the local request handle\\nonce it\u0027s been queued.\\n\\n\u003c6\u003e[  246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0)\\n\u003c3\u003e[  246.797078][   T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90.\\n\u003c6\u003e[  246.797213][   T26] ------------[ cut here ]------------\\n\u003c2\u003e[  246.797224][   T26] kernel BUG at lib/list_debug.c:31!\\n\u003c6\u003e[  246.807073][   T26] Call trace:\\n\u003c6\u003e[  246.807180][   T26]  uvcg_video_pump+0x364/0x38c\\n\u003c6\u003e[  246.807366][   T26]  process_one_work+0x2a4/0x544\\n\u003c6\u003e[  246.807394][   T26]  worker_thread+0x350/0x784\\n\u003c6\u003e[  246.807442][   T26]  kthread+0x2ac/0x320\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: gadget: uvc: fix list double add in uvcg_video_pump Puede producirse un p\u00e1nico si el endpoint se deshabilita y uvcg_video_pump agrega la solicitud nuevamente a la lista req_free despu\u00e9s de que ya se haya puesto en cola en el endpoint. La finalizaci\u00f3n del endpoint agregar\u00e1 la solicitud nuevamente a la lista req_free. Invalida el identificador de solicitud local una vez que se haya puesto en cola.  \u0026lt;6\u0026gt;[ 246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0) \u0026lt;3\u0026gt;[ 246.797078][ T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90. \u0026lt;6\u0026gt;[ 246.797213][ T26] ------------[ cut here ]------------ \u0026lt;2\u0026gt;[ 246.797224][ T26] kernel BUG at lib/list_debug.c:31! \u0026lt;6\u0026gt;[ 246.807073][ T26] Call trace: \u0026lt;6\u0026gt;[ 246.807180][ T26] uvcg_video_pump+0x364/0x38c \u0026lt;6\u0026gt;[ 246.807366][ T26] process_one_work+0x2a4/0x544 \u0026lt;6\u0026gt;[ 246.807394][ T26] worker_thread+0x350/0x784 \u0026lt;6\u0026gt;[ 246.807442][ T26] kthread+0x2ac/0x320 \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/usb/gadget/function/uvc_video.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2\",\"lessThan\":\"d95ac8b920de1d39525fadc408ce675697626ca6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2\",\"lessThan\":\"96163f835e65f8c9897487fac965819f0651d671\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/usb/gadget/function/uvc_video.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.8\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.18.8\",\"matchCriteriaId\":\"0172D3FA-DDEB-482A-A270-4A1495A8798C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"A8C30C2D-F82D-4D37-AB48-D76ABFBD5377\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"BF8547FC-C849-4F1B-804B-A93AE2F04A92\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"F3068028-F453-4A1C-B80F-3F5609ACEF60\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/96163f835e65f8c9897487fac965819f0651d671\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d95ac8b920de1d39525fadc408ce675697626ca6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:27:15+00:00",
      "cve": "CVE-2022-49686",
      "id": "CVE-2022-49686",
      "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: usb: gadget: uvc: fix list double add in uvcg_video_pump",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49686.json",
      "version": "3"
    }
  }
}



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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.


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