# CVE-2026-119728: Gst-plugins-bad: gst-plugins-bad: null pointer dereference in h.264 mvc sps cleanup during parse failure

Status: published. Published: 2026-10-30. Updated: 2026-11-03.

A flaw was found in the H.264 video parser in gst-plugins-bad. When processing a specially crafted H.264 video file with malformed Multiview (MVC) Sequence Parameter Set data, the parser can dereference a NULL pointer during the cleanup of partially allocated internal structures after a parse failure. This can cause the application using GStreamer to crash, resulting in a denial of service.

## Remediation

- workaround: No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat Enterprise Linux 10 (gstreamer1-plugins-bad-free): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (gstreamer-plugins-bad-free): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gstreamer1-plugins-bad-free): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (gstreamer-plugins-bad-free): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gstreamer1-plugins-bad-free): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (gstreamer1-plugins-bad-free): Version range not reported. Source: CNA: redhat
- GStreamer project / gst-plugins-bad: ≥ 0; < 1.28.2 (affected, semver); 1.28.2 (unaffected). Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: CNA: redhat

- CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: 0.16% as of 2026-11-02; percentile 5.48%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-476

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2026-119728 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2564125 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11240 (CNA: redhat)

- https://gstreamer.freedesktop.org/security/sa-2026-0013.html (CNA: redhat)

- https://access.redhat.com/security/cve/CVE-2026-119728 (secalert@redhat.com)

- https://bugzilla.redhat.com/show_bug.cgi?id=2564125 (secalert@redhat.com)

- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11240 (secalert@redhat.com)

- https://gstreamer.freedesktop.org/security/sa-2026-0013.html (secalert@redhat.com)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-119728; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-119728; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119728; retrieved 2026-11-03; source updated Not reported

Revision: b7c3b8f4d579ef865d57cb70236396c7de0cad6a024436a94ef3e25072c9be91

Canonical: https://y2.dev/cve/CVE-2026-119728

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.