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CVE-2020-36558 is a race condition in the Linux kernel Virtual Terminal subsystem affecting kernels before 5.5.7. In the VT_RESIZEX ioctl handling path in drivers/tty/vt/vt_ioctl.c, concurrent state changes can leave vc_cons[i].d NULL before it is dereferenced. Triggering this condition causes a NULL-pointer dereference and general-protection fault.
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A race condition in the Linux kernel VT_RESIZEX ioctl that can lead to a NULL-pointer dereference when vc_cons[i].d is NULL.
A Linux kernel race condition in the VT_RESIZEX ioctl that can cause a NULL-pointer dereference when vc_cons[i].d is already NULL. It is addressed by the Red Hat Enterprise Linux 7 kernel update.
A Linux kernel race condition in the VT_RESIZEX ioctl that can result in a NULL-pointer dereference when vc_cons[i].d is already NULL. It is fixed by the Red Hat kernel-rt update.
Linux kernel VT_RESIZEX ioctl race condition causing a NULL-pointer dereference.
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