microsoft/msquic v2.5.9-rc2

v2.5.9-rc2

Repository: microsoft/msquic

Tag: v2.5.9-rc2

Published: 2026-06-24T16:30:48Z

Prerelease: yes

Release notes:

What's Changed

• Bump version number to v2.5.9 by @guhetier in https://github.com/microsoft/msquic/pull/5986
• [CP] Add support for multiprocess sharing + Fix a QTIP xdp bug (#5798) (#5747) (#5395) by @ProjectsByJackHe in https://github.com/microsoft/msquic/pull/6050
• [CP] Fix TLS fragment tests (#6066) by @guhetier in https://github.com/microsoft/msquic/pull/6089
• [CP] Added Bound check for UDP length in XDP datapath (#6057) by @guhetier in https://github.com/microsoft/msquic/pull/6081
• [CP] Virtual buffer overflow fix (#6022) by @guhetier in https://github.com/microsoft/msquic/pull/6083
• [CP] Fix QuicOperationFree using CXPLAT_FREE on pool-allocated QUIC_RECV_CHUNK (#5881) by @guhetier in https://github.com/microsoft/msquic/pull/6085
• [CP] Default Windows CI builds to Visual Studio 18 2026 (#6100) by @guhetier in https://github.com/microsoft/msquic/pull/6104
• Remove CXPLAT_FRE_ASSERT around QuicCryptoFrameEncode by @guhetier in https://github.com/microsoft/msquic/pull/6102

Pre-release created to validate the Fedora 44 packages

Full Changelog: https://github.com/microsoft/msquic/compare/v2.5.8...v2.5.9-rc2