CVE-2026-97995
In the Linux kernel, the following vulnerability has been resolved: virtio_console: do not free control-out buffers on remove __send_control_msg() publishes &portdev->cpkt as the control-out virtqueue cookie. remove_vqs() walks every virtqueue and passes leftover cookies to free_buf(), which treats them as struct port_buffer and reads sgpages. If a control message is still on c_ovq when the device is unbound, free_buf() reads past the ports_device object. KASAN reported slab-out-of-bounds in free_buf(): free_buf remove_vqs virtcons_remove unbind_store The object was the ports_device allocated in virtcons_probe(). Drain c_ovq without freeing. The packet lives in portdev and is released with it.
Affected versions
Linux kernel versions
3.16.60,
3.18.108,
4.1.52,
4.4.131,
4.9.98,
4.14.39,
4.16.7,
4.17
and later are affected. Fixed in
5.10.271,
5.15.222,
6.1.189,
6.6.158,
6.12.111,
6.18.53,
7.2.7,
7.3-rc3
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-97995?
CVE-2026-97995 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.16.60 onward and has been patched in 5.10.271, 5.15.222, 6.1.189 and others. CVE-2026-97995 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-97995?
Yes. CVE-2026-97995 has been patched. Fixed versions include 5.10.271, 5.15.222, 6.1.189 and others. If you are running Linux kernel 3.16.60 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-97995 actively exploited?
No. CVE-2026-97995 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.