SB2026103091 - Ubuntu update for gst-plugins-bad1.0
Published: October 30, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2026-53701)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to disclose sensitive information or cause a denial of service.
The vulnerability exists due to an out-of-bounds read in the H.266/VVC codec parser (gsth266parser) when parsing Picture Parameter Set (PPS) tile slices. A remote attacker can provide a crafted H.266/VVC video stream with a large picture dimension and an excessive number of explicitly signalled slices per tile to disclose sensitive information or cause a denial of service.
2) Out-of-bounds read (CVE-ID: CVE-2026-53702)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to out-of-bounds read in the H.265 parser when parsing buffering period SEI messages in a crafted H.265 media file. A remote attacker can provide a specially crafted H.265 media file to cause a denial of service.
User interaction is required to process the crafted media file.
Remediation
Install update from vendor's website.