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Description

Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.

PUBLISHED Reserved 2026-06-08 | Published 2026-06-15 | Updated 2026-06-15 | Assigner redhat




MEDIUM: 5.3CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H

Problem types

Out-of-bounds Read

Product status

Default status
affected

Default status
unknown

Default status
affected

Default status
affected

Default status
affected

Default status
affected

Timeline

2026-05-19:Reported to Red Hat.
2026-06-15:Made public.

Credits

Red Hat would like to thank JUNYI LIU for reporting this issue.

References

access.redhat.com/security/cve/CVE-2026-52721 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2486732 (RHBZ#2486732) issue-tracking

gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5106

cve.org (CVE-2026-52721)

nvd.nist.gov (CVE-2026-52721)

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