FKIE_CVE-2026-1940

Vulnerability from fkie_nvd - Published: 2026-03-23 22:16 - Updated: 2026-03-24 15:54
Severity ?
5.1 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Summary
An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 > size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-1940
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2436932
secalert@redhat.comhttps://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854
secalert@redhat.comhttps://gstreamer.freedesktop.org/security/sa-2026-0001.html
secalert@redhat.comhttps://security-tracker.debian.org/tracker/CVE-2026-1940
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The patch added a size validation check lsize + 8 \u003e size, but it does not account for the GST_ROUND_UP_2(lsize) used in the actual offset calculation. When lsize is an odd number, the parser advances more bytes than validated, causing OOB read."
    },
    {
      "lang": "es",
      "value": "Una soluci\u00f3n incompleta para CVE-2024-47778 permite una lectura fuera de l\u00edmites en la funci\u00f3n gst_wavparse_adtl_chunk(). El parche a\u00f1adi\u00f3 una comprobaci\u00f3n de validaci\u00f3n de tama\u00f1o lsize + 8 \u0026gt; size, pero no tiene en cuenta el GST_ROUND_UP_2(lsize) utilizado en el c\u00e1lculo real del desplazamiento. Cuando lsize es un n\u00famero impar, el analizador avanza m\u00e1s bytes de los validados, provocando una lectura OOB."
    }
  ],
  "id": "CVE-2026-1940",
  "lastModified": "2026-03-24T15:54:09.400",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 2.5,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-23T22:16:25.043",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-1940"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436932"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://gstreamer.freedesktop.org/security/sa-2026-0001.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-1940"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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