CVE-2026-46146 (GCVE-0-2026-46146)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-06-14 17:57
VLAI
Title
ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3() The convert_chmap_v3() has a loop with its increment size of cs_desc->wLength, but we forgot to validate cs_desc->wLength itself, which may lead to potential endless loop by a malformed descriptor. Add a proper size check to abort the loop for plugging the hole.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 786571b10b1ae6d90e1242848ce78ee7e1d493c4 , < 076d5d13eb9c1ad259a7f246149f6676c62285f9 (git)
Affected: 275e37532e8ebe25e8a4069b2d9f955bfd202a46 , < 316aa0b1e3c5600eae5ab876394c1ac70e6db581 (git)
Affected: 47ab3d820cb0a502bd0074f83bb3cf7ab5d79902 , < 24a40df79307ca7ca0eec0889361cf6ac146d72a (git)
Affected: 1034719fdefd26caeec0a44a868bb5a412c2c1a5 , < e0e3dcf48189603f3865f1a0b799b3b42baae96d (git)
Affected: ae17b3b5e753efc239421d186cd1ff06e5ac296e , < 4e0ee232ebe3df04874125d7c7f3e6c25ea5483d (git)
Affected: ecfd41166b72b67d3bdeb88d224ff445f6163869 , < be09b47ed8677d76962e3240c145502e2ad9f3c8 (git)
Affected: ecfd41166b72b67d3bdeb88d224ff445f6163869 , < fa5b19ce69067874b1413f3c2027563bae8c2cb3 (git)
Affected: ecfd41166b72b67d3bdeb88d224ff445f6163869 , < 6e7247d8f5fefeceb0bb9cc80a5388a636b219cd (git)
Affected: 799c06ad4c9c790c265e8b6b94947213f1fb389c (git)
Affected: dfdcbcde5c20df878178245d4449feada7d5b201 (git)
Affected: 7ef3fd250f84494fb2f7871f357808edaa1fc6ce (git)
Affected: 5.10.241 , < 5.10.258 (semver)
Affected: 5.15.190 , < 5.15.209 (semver)
Affected: 6.1.149 , < 6.1.175 (semver)
Affected: 6.6.103 , < 6.6.140 (semver)
Affected: 6.12.43 , < 6.12.88 (semver)
Affected: 5.4.297 , < 5.5 (semver)
Affected: 6.15.11 , < 6.16 (semver)
Affected: 6.16.2 , < 6.17 (semver)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

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                "negate": false,
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        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()\n\nThe convert_chmap_v3() has a loop with its increment size of\ncs_desc-\u003ewLength, but we forgot to validate cs_desc-\u003ewLength itself,\nwhich may lead to potential endless loop by a malformed descriptor.\n\nAdd a proper size check to abort the loop for plugging the hole."
          }
        ],
        "id": "CVE-2026-46146",
        "lastModified": "2026-06-17T10:53:08.847",
        "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",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-05-28T10:16:30.203",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T07:41:04+00:00",
      "cve": "CVE-2026-46146",
      "id": "CVE-2026-46146",
      "initial_release_date": "2026-05-28T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46146.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-16T00:12:49Z",
      "cve": "CVE-2026-46146",
      "id": "CVE-2026-46146",
      "initial_release_date": "2026-05-29T01:16:18Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "428",
      "product_status:known_not_affected": "238",
      "product_status:recommended": "277",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46146",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46146.json",
      "version": "14"
    }
  }
}



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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

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.

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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.


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