Packages
- srt - Secure Reliable Transport UDP streaming library
Details
It was discovered that SRT did not authenticate certain encryption control
messages. A remote attacker could possibly use this issue to downgrade an
encrypted connection and inject arbitrary content or interrupt a media
stream. (CVE-2026-55868)
It was discovered that SRT did not properly validate certain control
packets during connection setup and key refresh operations. A remote
attacker could possibly use this issue to cause SRT to crash, resulting in
a denial of service. (CVE-2026-55869)
It was discovered that SRT did not authenticate certain encryption control
messages. A remote attacker could possibly use this issue to downgrade an
encrypted connection and inject arbitrary content or interrupt a media
stream. (CVE-2026-55868)
It was discovered that SRT did not properly validate certain control
packets during connection setup and key refresh operations. A remote
attacker could possibly use this issue to cause SRT to crash, resulting in
a denial of service. (CVE-2026-55869)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 26.04 LTS resolute | srt-tools – 1.5.4-3ubuntu0.1~esm1 | ||
| 24.04 LTS noble | srt-tools – 1.5.3-1ubuntu0.1~esm1 | ||
| 22.04 LTS jammy | srt-tools – 1.4.4-4ubuntu0.1~esm1 | ||
| 20.04 LTS focal | srt-tools – 1.4.0-1ubuntu0.1~esm1 | ||
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