Bug 2514255 (CVE-2026-73215) - CVE-2026-73215 coturn: Coturn: Denial of Service due to incorrect port allocation
Summary: CVE-2026-73215 coturn: Coturn: Denial of Service due to incorrect port alloca...
Keywords:
Status: NEW
Alias: CVE-2026-73215
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2514628 2514629
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-11 18:02 UTC by OSIDB Bzimport
Modified: 2026-08-12 14:07 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-08-11 18:02:08 UTC 
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, turnports_allocate_even() in src/apps/relay/turn_ports.c marks the unused odd sibling port as TPS_TAKEN_ODD for an EVEN-PORT Allocate request with reservation bit R=0 even though no RTCP socket will release it, allowing an authenticated client to permanently exhaust the relay port pool and cause subsequent allocations to fail with STUN error 508. This issue is fixed in version 4.17.0.
Note You need to log in before you can comment on or make changes to this bug.