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

Vulnerability from cvelistv5 – Published: 2025-02-26 02:24 – Updated: 2025-05-04 08:43
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 ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/uvc_video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d95ac8b920de1d39525fadc408ce675697626ca6",
              "status": "affected",
              "version": "f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2",
              "versionType": "git"
            },
            {
              "lessThan": "96163f835e65f8c9897487fac965819f0651d671",
              "status": "affected",
              "version": "f9897ec0f6d34e8b2bc2f4c8ab8789351090f3d2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/gadget/function/uvc_video.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.8",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:43:18.743Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d95ac8b920de1d39525fadc408ce675697626ca6"
        },
        {
          "url": "https://git.kernel.org/stable/c/96163f835e65f8c9897487fac965819f0651d671"
        }
      ],
      "title": "usb: gadget: uvc: fix list double add in uvcg_video_pump",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49686",
    "datePublished": "2025-02-26T02:24:12.624Z",
    "dateReserved": "2025-02-26T02:21:30.441Z",
    "dateUpdated": "2025-05-04T08:43:18.743Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • 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.
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  • 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.