CVE-2026-97995

CVE CVE-2026-97995EUVD EUVD-2026-86649Published 2026-09-25T10:23:26.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <894f98e73983f37354214a89a3a7fd35bf9e3072; 4.9.98 <4.10; 47cb14192bcbba3f15b1c3561e05e084e56fdef6; f92b16b815efe8207090a9b5a767618fd89542ca; 4.1.52 <4.2; 3.18.108 <3.19; a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <a80c33488e0bbe642ed803b13a4ac8078a70b507; d2bbfac82b7942afc5d8e564d7087835280df495; patch: 6.18.53; a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <177ee901aa2bab02e7f1f8edbb814fd5e386ed62; 4.16.7 <4.17; patch: 7.2.7; a7a69ec0d8e4a58be7db88d33cbfa2912807bb2b <f620c40ea6862feed84deb105568b21ec53a7830; 6b1c41a0f7183702abb7a104c6c7e196ad69a6b3; 4.14.39 <4.15; 4.4.131 <4.5; patch: 6.12.111; patch: 7.3-rc3; 3.16.60 <3.17; a88e13d9a092fbb772d380944b44eb549ef131fe; 4.17; patch: 0; dd807a784fd36f4136516d5858efb6473dda422c; 9037306163a6ba5587e4b5ca511ac7be4fb7295b

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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