Vulnerability-Lookup

ubuntu-cve-2026-18649

Vulnerability from osv_ubuntu

Published

2026-08-11 00:00

Modified

2026-08-11 00:00

Summary

Details

A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-18649	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-18649	REPORT
	https://access.redhat.com/security/cve/CVE-2026-18649	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2510614	REPORT
	https://gitlab.freedesktop.org/gstreamer/gstreame…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.8.3-1ubuntu0.5+esm1"
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          {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.8.3-1ubuntu0.5+esm1"
          },
          {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.8.3-1ubuntu0.5+esm1"
          }
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      },
      "package": {
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        "name": "gst-plugins-good1.0",
        "purl": "pkg:deb/ubuntu/gst-plugins-good1.0@1.8.3-1ubuntu0.5+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.0-1ubuntu1",
        "1.6.1-1ubuntu1",
        "1.6.2-1ubuntu1",
        "1.7.1-1ubuntu1",
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        "1.8.3-1ubuntu0.3",
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    {
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            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
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            "binary_version": "1.14.5-0ubuntu1~18.04.3+esm1"
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        ]
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      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
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        "purl": "pkg:deb/ubuntu/gst-plugins-good1.0@1.14.5-0ubuntu1~18.04.3+esm1?arch=source\u0026distro=esm-infra/bionic"
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          ],
          "type": "ECOSYSTEM"
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        "1.14.5-0ubuntu1~18.04.3",
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    },
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      "ecosystem_specific": {
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            "binary_version": "1.16.3-0ubuntu1.3+esm1"
          },
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            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
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            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
          },
          {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.16.3-0ubuntu1.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "gst-plugins-good1.0",
        "purl": "pkg:deb/ubuntu/gst-plugins-good1.0@1.16.3-0ubuntu1.3+esm1?arch=source\u0026distro=esm-infra/focal"
      },
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        "1.16.2-1ubuntu1",
        "1.16.2-1ubuntu2",
        "1.16.2-1ubuntu2.1",
        "1.16.3-0ubuntu1",
        "1.16.3-0ubuntu1.1",
        "1.16.3-0ubuntu1.2",
        "1.16.3-0ubuntu1.3",
        "1.16.3-0ubuntu1.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
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            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.20.3-0ubuntu1.7"
          },
          {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.20.3-0ubuntu1.7"
          },
          {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.20.3-0ubuntu1.7"
          },
          {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.20.3-0ubuntu1.7"
          },
          {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.20.3-0ubuntu1.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "gst-plugins-good1.0",
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        "1.20.1-1ubuntu1",
        "1.20.3-0ubuntu1",
        "1.20.3-0ubuntu1.1",
        "1.20.3-0ubuntu1.3",
        "1.20.3-0ubuntu1.4",
        "1.20.3-0ubuntu1.5",
        "1.20.3-0ubuntu1.6",
        "1.20.3-0ubuntu1.7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.24.2-1ubuntu1.5"
          },
          {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.24.2-1ubuntu1.5"
          },
          {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.24.2-1ubuntu1.5"
          },
          {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.24.2-1ubuntu1.5"
          },
          {
            "binary_name": "gstreamer1.0-qt6",
            "binary_version": "1.24.2-1ubuntu1.5"
          },
          {
            "binary_name": "libgstreamer-plugins-good1.0-0",
            "binary_version": "1.24.2-1ubuntu1.5"
          }
        ]
      },
      "package": {
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        "name": "gst-plugins-good1.0",
        "purl": "pkg:deb/ubuntu/gst-plugins-good1.0@1.24.2-1ubuntu1.5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.22.6-1ubuntu1",
        "1.22.6-1ubuntu2",
        "1.22.8-3ubuntu1",
        "1.22.9-1ubuntu1",
        "1.24.0-1ubuntu5",
        "1.24.0-1ubuntu7",
        "1.24.1-2ubuntu1",
        "1.24.2-1ubuntu1",
        "1.24.2-1ubuntu1.1",
        "1.24.2-1ubuntu1.2",
        "1.24.2-1ubuntu1.3",
        "1.24.2-1ubuntu1.4",
        "1.24.2-1ubuntu1.5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gstreamer1.0-gtk3",
            "binary_version": "1.28.2-2ubuntu0.1"
          },
          {
            "binary_name": "gstreamer1.0-plugins-good",
            "binary_version": "1.28.2-2ubuntu0.1"
          },
          {
            "binary_name": "gstreamer1.0-pulseaudio",
            "binary_version": "1.28.2-2ubuntu0.1"
          },
          {
            "binary_name": "gstreamer1.0-qt5",
            "binary_version": "1.28.2-2ubuntu0.1"
          },
          {
            "binary_name": "gstreamer1.0-qt6",
            "binary_version": "1.28.2-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "gst-plugins-good1.0",
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      },
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        "1.27.2-1ubuntu1",
        "1.27.90-1ubuntu1",
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        "1.28.0-1ubuntu3",
        "1.28.1-1ubuntu1",
        "1.28.2-2",
        "1.28.2-2ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.",
  "id": "UBUNTU-CVE-2026-18649",
  "modified": "2026-08-11T00:00:00Z",
  "published": "2026-08-11T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-18649"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-18649"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-18649"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510614"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/113"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-18649"
  ]
}

CVE-2026-18649 (GCVE-0-2026-18649)

Vulnerability from cvelistv5 – Published: 2026-08-06 06:48 – Updated: 2026-08-11 20:43

Title

Gst-plugins-good: gst-plugins-good: unbounded memory growth in rtph264depay and rtph265depay rtp depayloaders

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

redhat

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:53451	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53452	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18649	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2510614	issue-trackingx_refsource_REDHAT
https://gitlab.freedesktop.org/gstreamer/gstreame…

Impacted products

4 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:1.26.7-2.el10_2.3 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:1.22.12-7.el9_8.2 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

Date Public

2026-08-06 06:41

Credits

Red Hat would like to thank Yehia Ali Mohamed Ezzat for reporting this issue.

Show details on NVD website

JSON

To clipboard

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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

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ubuntu-cve-2026-18649

Vulnerability from osv_ubuntu

CVE-2026-18649 (GCVE-0-2026-18649)

Tags

Sightings

Nomenclature