CVE-2025-38249 (GCVE-0-2025-38249)

Vulnerability from cvelistv5 – Published: 2025-07-09 10:42 – Updated: 2026-05-11 21:24
VLAI
Title
ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3() In snd_usb_get_audioformat_uac3(), the length value returned from snd_usb_ctl_msg() is used directly for memory allocation without validation. This length is controlled by the USB device. The allocated buffer is cast to a uac3_cluster_header_descriptor and its fields are accessed without verifying that the buffer is large enough. If the device returns a smaller than expected length, this leads to an out-of-bounds read. Add a length check to ensure the buffer is large enough for uac3_cluster_header_descriptor.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6667 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < 24ff7d465c4284529bbfa207757bffb6f44b6403 (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < 2dc1c3edf67abd30c757f8054a5da61927cdda21 (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < c3fb926abe90d86f5e3055e0035f04d9892a118b (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < 6eb211788e1370af52a245d4d7da35c374c7b401 (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < 74fcb3852a2f579151ce80b9ed96cd916ba0d5d8 (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < 0ee87c2814deb5e42921281116ac3abcb326880b (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < 11e740dc1a2c8590eb7074b5c4ab921bb6224c36 (git)
Affected: 9a2fe9b801f585baccf8352d82839dcd54b300cf , < fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a (git)
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Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 5.4.296 , ≤ 5.4.* (semver)
Unaffected: 5.10.240 , ≤ 5.10.* (semver)
Unaffected: 5.15.187 , ≤ 5.15.* (semver)
Unaffected: 6.1.143 , ≤ 6.1.* (semver)
Unaffected: 6.6.96 , ≤ 6.6.* (semver)
Unaffected: 6.12.36 , ≤ 6.12.* (semver)
Unaffected: 6.15.5 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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              "impactScore": 5.2,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-07-09T11:15:27.077",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
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          },
          {
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            "url": "https://git.kernel.org/stable/c/74fcb3852a2f579151ce80b9ed96cd916ba0d5d8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
          {
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            "url": "https://git.kernel.org/stable/c/fb4e2a6e8f28a3c0ad382e363aeb9cd822007b8a"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
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            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T00:59:36+00:00",
      "cve": "CVE-2025-38249",
      "id": "CVE-2025-38249",
      "initial_release_date": "2025-07-09T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: usb-audio: Fix out-of-bounds read in snd_usb_get_audioformat_uac3()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38249.json",
      "version": "3"
    }
  }
}



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