RHBA-2026:43594 - Bug Fix Advisory

Topic

An update for virtio-win is now available for Red Hat Enterprise Linux 10.

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-10.2.z] (JIRA:RHEL-192315)
• Someone driver works with debug level >= 6 (debug message flood) [rhel-10.2.z] (JIRA:RHEL-192589)
• Virtio-win may not configure guest cache mode when using virtio-blk [rhel-10.2.z] (JIRA:RHEL-192590)
• [virtio-win] NetKVM (virtio-win 0.1.285) does not transmit USO packets correctly [rhel-10.2.z] (JIRA:RHEL-192591)
• viosock: Validate fd_count in VIOSockSelect against overflow and empt? [rhel-10.2.z] (JIRA:RHEL-192592)
• [Windows]Can not connect to VM via vsock after migration [rhel-10.2.z] (JIRA:RHEL-192594)
• [virtio-win][viogpu] Provide a way to set a custom screen resolution [rhel-10.2.z] (JIRA:RHEL-192595)
• [viogpudo] VM crashes with BSOD/black screen when setting invalid resolution values [rhel-10.2.z] (JIRA:RHEL-192596)
• netkvm: treat temporary TX queue full as retry, not drop [rhel-10.2.z] (JIRA:RHEL-192610)
• viosock: Fix spec compliance issues in WSP library and socket driver [rhel-10.2.z] (JIRA:RHEL-192611)

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 10 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64
• Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64

Fixes

CVEs

(none)

References

(none)