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CVE-2026-80815 (GCVE-0-2026-80815)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:13 – Updated: 2026-09-04 15:13
VLAI
Title
ALSA: scarlett2: Use a private URB for the notification endpoint
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: scarlett2: Use a private URB for the notification endpoint scarlett2_init_notify() used mixer->urb, which snd_usb_mixer_status_create() allocates for the UAC2 status interrupt endpoint and mixer.c manages. On a device with that endpoint, the "already in use" check fires on the status URB and returns 0 for success without doing anything. No notification URB is submitted, and cmd_done is left zeroed because it is initialised past that check and nowhere else. scarlett2_usb_init() then issues SCARLETT2_USB_INIT_1 and wait_for_completion_timeout() would crash adding to the zeroed wait.head. Use a separate URB in scarlett2_data, as done for FCP, and initialise cmd_done in scarlett2_init_private(). mixer.c was also freeing the URB in snd_usb_mixer_free() and resubmitting it in snd_usb_mixer_activate(), so scarlett2 must now do both: add scarlett2_cleanup_urb(), called from private_free and private_suspend, and a private_resume callback to re-establish the URB after resume. scarlett2_init_notify() is reached from there, and the URB kill path in scarlett2_notify() completes cmd_done, leaving a stale count that would satisfy the next command's wait before the device ACKs. Use reinit_completion() to clear it. Also free the URB if the transfer buffer allocation fails, and both if usb_submit_urb() fails. Move scarlett2_init_notify() up next to scarlett2_cleanup_urb() so scarlett2_init_private() can reference it without a forward declaration.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1b65088958cadab04d5d34a8615e2466b1b48ecb , < 013448eb7b0d0b91d6168685dab10e9b41baa825 (git)
Affected: 1b65088958cadab04d5d34a8615e2466b1b48ecb , < 4305e4b52acc0ca67dcfdf8f73dd943dab508ae8 (git)
Affected: 1b65088958cadab04d5d34a8615e2466b1b48ecb , < 04df0232a6976845cd9c9e83b6c26215759be667 (git)
Affected: 1b65088958cadab04d5d34a8615e2466b1b48ecb , < ecd2f83a4ddc078901e7104144cb6c5e5db3b7cf (git)
Affected: 1b65088958cadab04d5d34a8615e2466b1b48ecb , < cd17d6ff7b7d2b1dd9bcc80ae7b4a83773f918c6 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.106 , ≤ 6.12.* (semver)
Unaffected: 6.18.47 , ≤ 6.18.* (semver)
Unaffected: 7.1.11 , ≤ 7.1.* (semver)
Unaffected: 7.2.1 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/usb/mixer.c",
            "sound/usb/mixer.h",
            "sound/usb/mixer_scarlett2.c"
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            "sound/usb/mixer.h",
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.10"
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: scarlett2: Use a private URB for the notification endpoint\n\nscarlett2_init_notify() used mixer-\u003eurb, which\nsnd_usb_mixer_status_create() allocates for the UAC2 status interrupt\nendpoint and mixer.c manages. On a device with that endpoint, the\n\"already in use\" check fires on the status URB and returns 0 for\nsuccess without doing anything. No notification URB is submitted, and\ncmd_done is left zeroed because it is initialised past that check and\nnowhere else. scarlett2_usb_init() then issues SCARLETT2_USB_INIT_1\nand wait_for_completion_timeout() would crash adding to the zeroed\nwait.head.\n\nUse a separate URB in scarlett2_data, as done for FCP, and initialise\ncmd_done in scarlett2_init_private(). mixer.c was also freeing the URB\nin snd_usb_mixer_free() and resubmitting it in\nsnd_usb_mixer_activate(), so scarlett2 must now do both: add\nscarlett2_cleanup_urb(), called from private_free and private_suspend,\nand a private_resume callback to re-establish the URB after resume.\nscarlett2_init_notify() is reached from there, and the URB kill path\nin scarlett2_notify() completes cmd_done, leaving a stale count that\nwould satisfy the next command\u0027s wait before the device ACKs. Use\nreinit_completion() to clear it.\n\nAlso free the URB if the transfer buffer allocation fails, and both if\nusb_submit_urb() fails. Move scarlett2_init_notify() up next to\nscarlett2_cleanup_urb() so scarlett2_init_private() can reference it\nwithout a forward declaration."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T15:13:35.740Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/013448eb7b0d0b91d6168685dab10e9b41baa825"
        },
        {
          "url": "https://git.kernel.org/stable/c/4305e4b52acc0ca67dcfdf8f73dd943dab508ae8"
        },
        {
          "url": "https://git.kernel.org/stable/c/04df0232a6976845cd9c9e83b6c26215759be667"
        },
        {
          "url": "https://git.kernel.org/stable/c/ecd2f83a4ddc078901e7104144cb6c5e5db3b7cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/cd17d6ff7b7d2b1dd9bcc80ae7b4a83773f918c6"
        }
      ],
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80815",
    "datePublished": "2026-09-04T15:13:35.740Z",
    "dateReserved": "2026-08-26T14:34:25.794Z",
    "dateUpdated": "2026-09-04T15:13:35.740Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80815",
      "date": "2026-09-14",
      "epss": "0.00168",
      "percentile": "0.06352"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80815\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-04T16:18:09.057\",\"lastModified\":\"2026-09-04T16:18:09.057\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nALSA: scarlett2: Use a private URB for the notification endpoint\\n\\nscarlett2_init_notify() used mixer-\u003eurb, which\\nsnd_usb_mixer_status_create() allocates for the UAC2 status interrupt\\nendpoint and mixer.c manages. On a device with that endpoint, the\\n\\\"already in use\\\" check fires on the status URB and returns 0 for\\nsuccess without doing anything. No notification URB is submitted, and\\ncmd_done is left zeroed because it is initialised past that check and\\nnowhere else. scarlett2_usb_init() then issues SCARLETT2_USB_INIT_1\\nand wait_for_completion_timeout() would crash adding to the zeroed\\nwait.head.\\n\\nUse a separate URB in scarlett2_data, as done for FCP, and initialise\\ncmd_done in scarlett2_init_private(). mixer.c was also freeing the URB\\nin snd_usb_mixer_free() and resubmitting it in\\nsnd_usb_mixer_activate(), so scarlett2 must now do both: add\\nscarlett2_cleanup_urb(), called from private_free and private_suspend,\\nand a private_resume callback to re-establish the URB after resume.\\nscarlett2_init_notify() is reached from there, and the URB kill path\\nin scarlett2_notify() completes cmd_done, leaving a stale count that\\nwould satisfy the next command\u0027s wait before the device ACKs. Use\\nreinit_completion() to clear it.\\n\\nAlso free the URB if the transfer buffer allocation fails, and both if\\nusb_submit_urb() fails. Move scarlett2_init_notify() up next to\\nscarlett2_cleanup_urb() so scarlett2_init_private() can reference it\\nwithout a forward declaration.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"sound/usb/mixer.c\",\"sound/usb/mixer.h\",\"sound/usb/mixer_scarlett2.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1b65088958cadab04d5d34a8615e2466b1b48ecb\",\"lessThan\":\"013448eb7b0d0b91d6168685dab10e9b41baa825\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1b65088958cadab04d5d34a8615e2466b1b48ecb\",\"lessThan\":\"4305e4b52acc0ca67dcfdf8f73dd943dab508ae8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1b65088958cadab04d5d34a8615e2466b1b48ecb\",\"lessThan\":\"04df0232a6976845cd9c9e83b6c26215759be667\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1b65088958cadab04d5d34a8615e2466b1b48ecb\",\"lessThan\":\"ecd2f83a4ddc078901e7104144cb6c5e5db3b7cf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1b65088958cadab04d5d34a8615e2466b1b48ecb\",\"lessThan\":\"cd17d6ff7b7d2b1dd9bcc80ae7b4a83773f918c6\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"sound/usb/mixer.c\",\"sound/usb/mixer.h\",\"sound/usb/mixer_scarlett2.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.106\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.47\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.11\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.1\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/013448eb7b0d0b91d6168685dab10e9b41baa825\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/04df0232a6976845cd9c9e83b6c26215759be667\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4305e4b52acc0ca67dcfdf8f73dd943dab508ae8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cd17d6ff7b7d2b1dd9bcc80ae7b4a83773f918c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ecd2f83a4ddc078901e7104144cb6c5e5db3b7cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-08T17:17:02Z",
      "cve": "CVE-2026-80815",
      "id": "CVE-2026-80815",
      "initial_release_date": "2026-09-05T00:26:50Z",
      "product_status:known_not_affected": "353",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80815",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80815.json",
      "version": "4"
    }
  }
}



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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.