kernel: Buffer overflow in drivers/xen/sys-hypervisor.c

A flaw was found in the Linux kernel. A buffer overflow vulnerability exists in the Xen hypervisor driver drivers/xen/sys-hypervisor.c. This flaw occurs because the HYPERVISORxenversionXENVERbuildid function returns a build ID that is not properly null-terminated. When the buildidshow function...

CVE-2026-31786 Buffer overflow in drivers/xen/sys-hypervisor.c

In the Linux kernel, the following vulnerability has been resolved: Buffer overflow in drivers/xen/sys-hypervisor.c The build id returned by HYPERVISORxenversionXENVERbuildid is neither NUL terminated nor a string. The first causes a buffer overflow as sprintf in buildidshow will read and copy ti...