RHBA-2026:65128 - Bug Fix Advisory

Topic

An update for virtio-win is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

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):

• [virtio-win][viogpu] Reject resolutions exceeding framebuffer segment capacity [rhel-9.6.z] (JIRA:RHEL-212015)
• Someone driver works with debug level >= 6 (debug message flood) [rhel-9.6.z] (JIRA:RHEL-212407)
• Virtio-win may not configure guest cache mode when using virtio-blk [rhel-9.6.z] (JIRA:RHEL-212414)
• [virtio-win] NetKVM (virtio-win 0.1.285) does not transmit USO packets correctly [rhel-9.6.z] (JIRA:RHEL-212419)
• viosock: Validate fd_count in VIOSockSelect against overflow and empt? [rhel-9.6.z] (JIRA:RHEL-212423)
• [Windows]Can not connect to VM via vsock after migration [rhel-9.6.z] (JIRA:RHEL-212535)
• [virtio-win][viogpu] Provide a way to set a custom screen resolution [rhel-9.6.z] (JIRA:RHEL-212539)
• [viogpudo] VM crashes with BSOD/black screen when setting invalid resolution values [rhel-9.6.z] (JIRA:RHEL-212543)
• netkvm: treat temporary TX queue full as retry, not drop [rhel-9.6.z] (JIRA:RHEL-212566)
• viosock: Fix spec compliance issues in WSP library and socket driver [rhel-9.6.z] (JIRA:RHEL-212596)

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 for x86_64 - Extended Update Support 9.6 x86_64
• Red Hat Enterprise Linux Server - AUS 9.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.6 x86_64

Fixes

CVEs

• CVE-2026-46655

References

(none)