RHBA-2026:90819 - Bug Fix Advisory

Topic

An update for virtio-win is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

Description

The virtio-win package provides paravirtualized network drivers for most Microsoft Windows operating systems. Paravirtualized drivers are virtualization-aware drivers used by fully virtualized guests running on Red Hat Enterprise Linux. Fully virtualized guests using the paravirtualized drivers gain significantly better I/O performance than fully virtualized guests running without the drivers.

Bug Fix(es) and Enhancement(s):

• [RFE][virtio-win][viogpu] Provide a way to set a custom screen resolution (JIRA:RHEL-271558)
• netkvm: treat temporary TX queue full as retry, not drop (JIRA:RHEL-271559)
• Someone driver works with debug level >= 6 (debug message flood) (JIRA:RHEL-271560)
• [virtio-win][viogpu] Reject resolutions exceeding framebuffer segment capacity (JIRA:RHEL-271561)
• Virtio-win may not configure guest cache mode when using virtio-blk (JIRA:RHEL-271562)
• [virtio-win] virtio-win x86 guest-tools MSI does not install viosock on Windows 10 32-bit (JIRA:RHEL-271563)
• [Windows]Can not connect to VM via vsock after migration (JIRA:RHEL-271583)
• [virtio-win][downstream->upstream] Fix copyright of all drivers (JIRA:RHEL-271584)
• [virtio-win] NetKVM (virtio-win 0.1.285) does not transmit USO packets correctly (JIRA:RHEL-271589)
• Windows 2025 and virtio-win 1.9.57 guest iSCSI connections drops, TCP issues (JIRA:RHEL-271591)
• [virtio-win] Installer: fix heap corruption crashes in MSI custom actions (JIRA:RHEL-271594)
• [virtio-win][installer] Drivers still could be installed even though press the ?Cancel? button during installation (JIRA:RHEL-271595)
• [virtio-win] Network interface name is not preserved after driver update (JIRA:RHEL-271602)
• viosock: Fix spec compliance issues in WSP library and socket driver (JIRA:RHEL-271605)
• [virtio-win][installer] Static ip couldn?t be rollback when updating the installer from an older one (JIRA:RHEL-271611)
• [viogpudo] VM crashes with BSOD/black screen when setting invalid resolution values (JIRA:RHEL-271613)
• viosock: Validate fd_count in VIOSockSelect against overflow and empt? (JIRA:RHEL-271615)
• [virtio-win][viostor] Properly setting SRB transfer length (JIRA:RHEL-271620)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server - AUS 9.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64

Fixes

CVEs

(none)

References

(none)