Bug 2542693 (CVE-2026-91095) - CVE-2026-91095 proxygen: proxygen: Denial of Service via use-after-free in WebTransport stream handling
Summary: CVE-2026-91095 proxygen: proxygen: Denial of Service via use-after-free in We...
Keywords:
Status: NEW
Alias: CVE-2026-91095
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2542963
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-28 20:51 UTC by OSIDB Bzimport
Modified: 2026-09-29 06:28 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-09-28 20:51:57 UTC 
In proxygen from v2024.10.28.00 until v2026.09.28.00, the HTTPTransaction::onWebTransportUniStream and HTTPTransaction::onWebTransportBidiStream APIs could return stream handles that the stream handler had already freed. HQSession then installed those handles as transport read callbacks, which could lead to use of freed memory.
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