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CVE-2026-31497 (GCVE-0-2026-31497)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-05-11 22:09
VLAI
Title
Bluetooth: btusb: clamp SCO altsetting table indices
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: clamp SCO altsetting table indices btusb_work() maps the number of active SCO links to USB alternate settings through a three-entry lookup table when CVSD traffic uses transparent voice settings. The lookup currently indexes alts[] with data->sco_num - 1 without first constraining sco_num to the number of available table entries. While the table only defines alternate settings for up to three SCO links, data->sco_num comes from hci_conn_num() and is used directly. Cap the lookup to the last table entry before indexing it so the driver keeps selecting the highest supported alternate setting without reading past alts[].
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 312c4450fe23014665c163f480edd5ad2e27bbb8 (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 9dd13a8641de79bc1bc93da55cdd35259a002683 (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 476c9262b430c38c6a701a3b8176a3f48689085b (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 6fba3c3d48c927e55611a0f5ea34da88138ed0ff (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 834cf890d2c3d29cbfa1ee2376c40469c28ec297 (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 1019028eb124564cf7bca58a16f1df8a1ca30726 (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 21c254202f9d78abe0fcd642a92966deb92bd226 (git)
Affected: baac6276c0a9f36f1fe1f00590ef00d2ba5ba626 , < 129fa608b6ad08b8ab7178eeb2ec272c993aaccc (git)
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Linux Linux Affected: 5.8
Unaffected: 0 , < 5.8 (semver)
Unaffected: 5.10.253 , ≤ 5.10.* (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.131 , ≤ 6.6.* (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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        "id": "CVE-2026-31497",
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        "published": "2026-04-22T14:16:47.857",
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            "url": "https://git.kernel.org/stable/c/129fa608b6ad08b8ab7178eeb2ec272c993aaccc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/21c254202f9d78abe0fcd642a92966deb92bd226"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/312c4450fe23014665c163f480edd5ad2e27bbb8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/476c9262b430c38c6a701a3b8176a3f48689085b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/6fba3c3d48c927e55611a0f5ea34da88138ed0ff"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/834cf890d2c3d29cbfa1ee2376c40469c28ec297"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9dd13a8641de79bc1bc93da55cdd35259a002683"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:25:48+00:00",
      "cve": "CVE-2026-31497",
      "id": "CVE-2026-31497",
      "initial_release_date": "2026-04-22T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: btusb: clamp SCO altsetting table indices",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31497.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:31:28Z",
      "cve": "CVE-2026-31497",
      "id": "CVE-2026-31497",
      "initial_release_date": "2026-04-23T01:25:24Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "725",
      "product_status:known_not_affected": "34",
      "product_status:recommended": "250",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-31497",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-31497.json",
      "version": "11"
    }
  }
}



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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.


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.