CVE-2026-1940 (GCVE-0-2026-1940)

Vulnerability from cvelistv5 – Published: 2026-03-23 21:26 – Updated: 2026-03-24 13:43
VLAI
Title
Gstreamer: incomplete fix of cve-2026-1940
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.
Severity
5.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-24 13:43 UTC
CWE
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1076 records in the last 180 days details
References
Impacted products
Date Public
2026-02-25 00:00
Credits
Red Hat would like to thank wooseokdotkim for reporting this issue.
Show details on NVD website
To clipboard 

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            "dateUpdated": "2026-03-23T21:26:14.719Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-1940"
            },
            {
              "name": "RHBZ#2436932",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2436932"
            },
            {
              "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4854"
            },
            {
              "url": "https://gstreamer.freedesktop.org/security/sa-2026-0001.html"
            },
            {
              "url": "https://security-tracker.debian.org/tracker/CVE-2026-1940"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-02-04T21:33:13.018Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-02-25T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Gstreamer: incomplete fix of cve-2026-1940",
          "x_generator": {
            "engine": "cvelib 1.8.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-1940",
        "datePublished": "2026-03-23T21:26:14.719Z",
        "dateReserved": "2026-02-04T21:25:31.430Z",
        "dateUpdated": "2026-03-24T13:43:53.427Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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